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J?'A National ~ Semiconductor OS 1489/0S 1489A Quad Line Receiver General Description The DS1489/DS1489A are quad line receivers designed to interface data terminal equipment with data communications equipment. They are constructed on a single monolithic silicon chip. These devices satisfy the specifications of EIA Standard RS-232C. The DS1489/DS1489A meet and exceed the specifications of MC1489/MC1489A and are pin-for-pin replacements. Schematic and Connection Diagrams Features • Four totally separate receivers per package • Programmable threshold • Built-in input threshold hysteresis • "Fail safe" operating mode • Inputs withstand ±30V V" Dual-In-Llne Package RESPONSE RESPONSE INPUT CONTROL OUTPUT INPUT CONTROL 0 0 0 c c OUTPUT c c CJ) .,.. .... 00 CD ...... C CJ) .,.. .... 00 ~ (% of unit shown) Ok Ok 2k ~~s;~:~~ O--------.... --+..J\I...,.,. ..... " V" OUTPUT 14 13 12 11 10 Ok INPUT O---'IIVY--..... --+---I OS1489: RF ~ 10k OS1489A: RF ~ 2k '---+---... --............ - ............ --
~National ~ Semiconductor DS26LS31 C/DS26LS31 M Quad High Speed Differential Line Driver General Description The DS26LS31 is a quad differential line driver designed for digital data transmission over balanced lines. The DS26LS31 meets all the requirements of EIA Standard RS-422 and Federal Standard 1020. It is designed to provide unipolar differential drive to twisted-pair or parallel-wire transmission lines. The circuit provides an enable and disable function common to all four drivers. The DS26LS31 features TRI-STATE® outputs and logically ANDed complementary outputs. The inputs are all LS compatible and are all one unit load. The DS26LS31 features a power up/down protection circuit which keeps the output in a high impedance state (TRI STATE) during power up or down preventing erroneous glitches on the transmission lines. Features • Output skew-2.0 ns typical • Input to output delay-10 ns • Operation from single 5V supply • 16-pin hermetic and molded DIP package • Outputs won't load line when Vee = OV • Four line drivers in one package for maximum package density • Output short-circuit protection • Complementary outputs • Meets the requirements of EIA Standard RS-422 • Pin compatible with AM26LS31 • Available in military and commercial temperature range • Glitch free power up/down Logic and Connection Diagrams ENABLE ENABLE INPUT 0 INPUT e INPUT B INPUT A GND Vee OUTPUT OUTPUT OUTPUT OUTPUT OUTPUT OUTPUT OUTPUT OUTPUT ~ m ~ ~ ~ M ~ M TL/F/5778-1 Dual-In-Line Package Top View Order Number DS26LS31CJ, DS26LS31CM, DS26LS31CN or DS26LS31MJ See NS Package Number J16A, M16A or N16A TL/F/5778-2 6-8
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~ National ~ Semiconductor 400014 R
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TRADEMARKS Following is the most cu
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II) c ~ ~National ~ ~ Semiconductor
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Table of Contents (Continued) Secti
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Alpha-Numeric Index(continUed) DS36
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Section 1 Local Area Networks IEEE
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~National ~ Semiconductor DP8390C/N
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3.0 Functional Description (Continu
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5.0 Pin Descriptions (Continued) BU
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6.0 Direct Memory Access Control (D
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7.0 Packet Reception (Continued) Re
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8.0 Packet Transmission (Continued)
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10.0 Internal Registers (Continued)
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12.0 Loopback Diagnostics (Continue
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13.0 Bus Arbitration and Timing The
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13.0 Bus Arbitration and Timing (Co
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15.0 Switching Characteristics AC S
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15.0 Switching Characteristics (Con
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AC Timing Test Conditions Input Pul
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2.0 Block Diagram COL CRS PROTOCOL
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4.0 Transmit/Receive Packet Encapsu
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5.0 Pin Descriptions (Continued) BU
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7.0 Packet Reception (Continued) fo
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7.0 Packet Reception (Continued) Er
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9.0 Remote DMA The Remote DMA chann
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11.0 Initialization Procedures (Con
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13.0 Bus Arbitration and Timing The
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15.0 Switching Characteristics AC S
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AC Timing Test Conditions Input Pul
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2.0 Block Diagram TRANSCEIVER CABLE
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PCC Connection Diagram 39.0. 39.0.
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6.0 Absolute Maximum Ratings Recomm
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9.0 Timing and Load Diagrams (Conti
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2.0 Block Diagram COAX CABLE r ____
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6.0 Absolute Maximum Ratings (Note
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I: • • • • • • Interrup
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PAL20LB Decode and DMA Interface Lo
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~ U16/8 R1 R1,R2=4.7k.o. Note: For
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Although Cheapernet is intended for
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The transmitted packet from the SNI
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Truth Table for Various Collision D
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CHEAPERNET APPLICATION WITH THE DP8
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DP8390 Network Interface Controller
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ping between the received address a
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If the current local DMA address ev
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6.2 Dual Port Memory One popular me
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StarLAN With The DP839EB Evaluation
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SUPPORTING DOCUMENTS The following
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Pulse Transformer U3 .----. j " "P>
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ELECTROSTATIC DISCHARGE TEST (ESD)
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Section 2 Contents DP8340INS32440 I
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.. 0 C'I C") en .... z 0 C") GO Go
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~ 'OIl' N CO) (J) Z .... o 'OIl' CO
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Timing Characteristics Oscillator F
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Timing Waveforms (Continued) TA REG
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.. ... ~ ~National ~ ~ Semiconduc
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Detailed Functional Pin Description
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Message Format (Continued) DATA REC
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Timing Characteristics (Notes 2, 6,
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Timing Waveforms (Continued) 4T±(T
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Typical Applications (Continued) +5
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Timing Characteristics (Continued)
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Functional Timing Waveforms (Contin
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Typical Applications (Continued) DA
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C") "Ot "Ot N C") en ...... z C") "
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Absolute Maximum Ratings (Note 1) I
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MUX~ __________________ The BIPLAN
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An EPROM implementation was selecte
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MASTER MUL TIPLEXING/DE-MUL TIPLEXI
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AN·496 '" 0, '" (U17/ (U23/6) TO 5
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AN-496 t W19 ~ J2-43 I' [; 0 J2-42
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AN·496
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DP8342/DP8343 HIGH SPEED INTERFACE
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2.0 Connection Diagram A13- 12 A12-
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3.0 Pin Descriptions (Continued) Si
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~ ~ 4.0 Electrical Specifications (
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4.0 Electrical Specifications (Cont
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~ ~ 4.0 Electrical Specifications (
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c( '
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~L ______________ ___ ~ ~ 4.0 Elect
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5.0 Instruction Set Overview (Conti
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6.0 Instruction Set Reference (Cont
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~ C') 6.0 Instruction Set Reference
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! 6.0 Instruction Set Reference (Co
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~ ~ 6.0 Instruction Set Reference (
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== ~ 6.0 Instruction Set Reference
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7.0 CPU Registers (Continued) BIT I
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7.0 CPU Registers (Continued) BIRO
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7.0 CPU Registers (Continued) 76543
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7.0 CPU Registers (Continued) BIT D
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7.0 CPU Registers (Continued) BIT D
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8.0 Remote Interface and Arbitratio
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~ ~ HASM state TCU state eLK-OUT RE
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~I tn tn ...._,__'RS A RS, RSC IMEM
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~ 01 CO RASM stat. TCU stat. CLK-OU
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~ ~ I\~"'''' I 'ow = "[OW2-0) , RS
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~ 8l HASM stat. TCU stat. CU- C» b
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10.0 Transceiver (Continued) (a) 32
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10.0 Transceiver (Continued) TABLE
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10.0 Transceiver (Continued) dotted
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10.0 Transceiver (Continued) TABLE
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10.0 Transceiver (Continued) {also
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Decoding Bit Fields with the JRMK I
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Receiver Interrupts/Flags for the D
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****************DA ISR*************
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"Interrupts"-A Powerful Tool of the
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TABLE II. (lCR) Interrupt Mask Bits
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Running the DP8344 with wait states
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» z I U'I Q 01:00 INSTRUCTION ADDR
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WHY EPROM SOFT-LOAD? In a stand-alo
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RESET ~. Timing at Beginning of Ins
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.. I CRYSTAL ~~~.~ I UP TO 64K OP83
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The roll-off frequency, Fro, should
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ceives messages whose first frame a
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RECEIVER INTERRUPT The receiver int
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JMP n LJMP n JMPR Rs JMPI Ptr JRMK
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00044 F90a :J- 226 Z • 227 MOVE A
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l> Z 00074 80BD 2'18 en • 00075 0
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Section 3 ISDN Components
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Introduction To National Semiconduc
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NSC Solutions for Layers 2 and 3 Na
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NSC Solutions: Systems Level Basic
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~National ~ Semiconductor PRELIMINA
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ISDN DEFINITIONS "B" Channel, or DS
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~ '" TE2 UP TO 8 TERMINALS -
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Section 4 Contents INS8250/INS8250-
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3.0 AC Electrical Characteristics T
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. ID
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5.0 Block Diagram INTERNAL DATA IUS
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6.0 Pin Descriptions (Continued) In
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8.0 Registers (Continued) and 1, on
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8.0 Registers (Continued) 8.5 INTER
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~ &I) o N m Z ::::: o &I) 'Of' o co
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~ Lt) o N co U) Z ::::: o Lt) '
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4.0 Timing Waveforms (Continued) Re
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6.0 Pin Descriptions (Continued) Re
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8.0 Registers The system programmer
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8.0 Registers (Continued) 8.3 PROGR
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8.0 Registers (Continued) Table II
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9.0 Typical Applications (Continued
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Table of Contents 1.0 ABSOLUTE MAXI
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3.0 AC Electrical Characteristics T
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4.0 Timing Waveforms (Continued) Wr
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5.0 Block Diagram AO A, A2 CSD CSI
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6.0 Pin Descriptions (Continued) tr
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... .I>. '" Bit No. TABLE II. Summa
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8.0 Registers (Continued) 8.3 PROGR
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8.0 Registers (Continued) When the
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'" .j>. 01 PHil This shows the basi
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3. The Rx FIFO will hold 16 bytes r
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NS16550A E-J r-o ..... IRQ4 ICU CPU
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TITLE 550APP.ASM - NS16550A INITIAL
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3.0 Board to Board Communications w
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DIAPPS.ASM Flow Chart l> z • ~ CO
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» z I "" CD RDAI: DISABLE IRTS, SE
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COMPARE: SET UP COMPARE BUffER POIN
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.set iCu imsk,lO *aO • set icu -c
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holdloop: nop # br hold loop # # #*
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# msint: save [rO,rl,r2,r3] # movd
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#3/30/B7••••• D2APPS.ASM
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# #*************************** 1655
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A Comparison of the I NS8250, NS 16
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cessed (see Figure 4), The output o
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AC Electrical Characteristics T A =
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~National ~ Semiconductor \ J micro
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1.0 Absolute Maximum Ratings 2.0 Op
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4.0 AC Electrical Characteristics (
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5.0 Timing Waveforms (Continued) ii
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6.0 Connection Diagrams Dual-In-Lln
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8.0 Block Diagram CPU INTERFACE INT
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9.0 Registers (Continued) Bit three
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Section 5 Contents MM74HC942 300 Ba
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Absolute Maximum Ratings (Notes 1 &
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fj ::z:: ~ :::IE :::IE ~ ,---------
Page 525 and 526: Applications Information (Continued
Page 527 and 528: Absolute Maximum Ratings (Notes 1 &
Page 529 and 530: Description of Pin Functions Pin No
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Page 535 and 536: Electrical Characteristics Unless o
Page 537 and 538: C'I 5 Pin Descriptions (Continued)
Page 539 and 540: IlAV22 RXIN LOCAL OSCILLATOR (L.O.)
Page 541 and 542: Functional Description (Continued)
Page 543 and 544: Functional Description (Continued)
Page 545 and 546: Absolute Maximum Ratings* If Milita
Page 547 and 548: Electrical Characteristics unless o
Page 549 and 550: Functional Description* (Continued)
Page 551 and 552: ,...A212AT RECEIVE FILTER p--------
Page 553 and 554: TABLE III. Remote Digital Loopback
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Page 561 and 562: .,... U) Z 3020 LPRINT USING" 1111
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Page 565 and 566: . II) or- II) Z
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Page 570 and 571: Section 6 Transmission Line Drivers
Page 572 and 573: ~National ~ Semiconductor Transmiss
Page 574 and 575: ~National ~ Semiconductor OS 1488 Q
Page 578 and 579: ~National ~ Semiconductor DS26C31 C
Page 580 and 581: ~National ~ Semiconductor DS26C32C
Page 582 and 583: ~National ~ Semiconductor DS34C86 Q
Page 584 and 585: ~National ~ Semiconductor PRELIMINA
Page 586 and 587: ~National ~ Semiconductor DS1692/DS
Page 588 and 589: ~National ~ Semiconductor DS75150 D
Page 590 and 591: ~National ~ Semiconductor DS75176A/
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Page 594 and 595: ~National ~ Semiconductor DS8922/22
Page 596 and 597: ~National ~ Semiconductor DS96172/~
Page 598 and 599: ~National ~ Semiconductor DS961771
Page 600 and 601: ~National ~ Semiconductor DS9637 AI
Page 602 and 603: • I .----------------------------
Page 604 and 605: Section 7 Physical Dimensions
Page 606 and 607: ~National ~ Semiconductor All dimen
Page 608 and 609: NS Package N16A N16A(REV E) 0.092 X
Page 610 and 611: t-------------I:..':::~"':I'-------
Page 612 and 613: 0.11M-0.118 (2.642-2.9971 .. ••
Page 614 and 615: NOTES
Page 616 and 617: ~National ~ Semiconductor Bookshelf
Page 618 and 619: RELIABILITY HANDBOOK-1986 Reliabili
Page 620 and 621: NATIONAL SEMICONDUCTOR CORPORATION
Page 622 and 623: NATIONAL SEMICONDUCTOR CORPORATION
Page 624: ~ National ~ Semiconductor
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