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3.0 AC Electrical Characteristics TA = O·Cto +700C, Vee = +5V ±5% (Continued) Symbol Parameter Conditions Transmitter tHR Delay from WR/WR (WR THR) 100 pF Load to Reset Interrupt tlR tlRS lsi Delay from RD/RD (RD IIR) to Reset Interrupt (THRE) Delay from InitiallNTR Reset to Transmit Start Delay from Initial Write to Interrupt INS8250 INS82C50-B Min Max Min Max Units 1000 1000 ns 100 pF Load 1000 1000 ns 16 16 50 50 BAUDOUT Cycles BAUDOUT Cycles lss Delay from Stop to Next Start 1000 1000 ns lsTI Modem Control Delay from Stop to Interrupt (THRE) tMDO Delay from WR/WR (WR MCR) to 100 pF Load Output tRIM Delay to Reset Interrupt from RD/RD 100 pF Load (RDMSR) 8 8 BAUDOUT Cycles 1000 1000 ns 1000 1000 ns lslM Delay to Set Interrupt from MODEM Input 100 pF Load 1000 1000 ns 4.0 Timing Waveforms (<strong>Al</strong>l timings are referenced to valid 0 and valid 1) 2.4V XtN O.4V External Clock Input (3.1 MHz Max.) 2.4V-- AC Test Points ---t:=j-'XH 2.0V ~'XL~ 2.0V O.IV (IIOtIlt TLlC/9329-2 Note 1: The 2.4V and O.4V levels are the Yoltages that the Inputs are driven to during AC testing. Note 2: The 2.0V and O.8V levels are the Yoltages at which the timing tests are made. XII BAUDOUT Timing I' N 'I 'IHD~ f-- 'BLD-j r- -I I-'HW ~LJ1JlJ1JU1 (+11 D1IIIlI1IT (+2) D1IIIlI1IT (+3) -.j f--'IHD --I I---taLD --I I--'ILD -I ~tLW tLW~ OM f. .. ".j --1 !--'IHD f.'HII+-'L,,---I J1J1JLJL I" '1"'-(11-2)XINCYCUS -I I-taLD --I I-'BHD ~~ (+N.N>3) I i,--- (NOTE2t O.IV TL/C/9329-3 I- ,1"" - 2XDUTCYtUS TLlC/9329-4 4-7
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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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~~L ~------------------------------
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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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N r--------------------------------
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~ ..,. r---------------------------
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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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(W) r------------------------------
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M r--------------------------------
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MUX~ __________________ The BIPLAN
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U) ,-------------------------------
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~ .--------------------------------
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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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.----------------------------------
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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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-----------------------------------
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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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Page 368 and 369: .. I CRYSTAL ~~~.~ I UP TO 64K OP83
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Page 386 and 387: 00044 F90a :J- 226 Z • 227 MOVE A
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Page 390 and 391: Section 3 ISDN Components
Page 392 and 393: Introduction To National Semiconduc
Page 394 and 395: NSC Solutions for Layers 2 and 3 Na
Page 396 and 397: NSC Solutions: Systems Level Basic
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Page 400 and 401: ~National ~ Semiconductor PRELIMINA
Page 402 and 403: ISDN DEFINITIONS "B" Channel, or DS
Page 404: ~ '" TE2 UP TO 8 TERMINALS -
Page 407 and 408: Section 4 Contents INS8250/INS8250-
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Page 411: 3.0 AC Electrical Characteristics T
Page 415 and 416: 5.0 Block Diagram INTERNAL DATA IUS
Page 417 and 418: 6.0 Pin Descriptions (Continued) In
Page 419 and 420: 8.0 Registers (Continued) and 1, on
Page 421 and 422: 8.0 Registers (Continued) 8.5 INTER
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Page 425 and 426: ~ &I) o N m Z ::::: o &I) 'Of' o co
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Page 430 and 431: 4.0 Timing Waveforms (Continued) Re
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Page 436 and 437: 8.0 Registers (Continued) 8.3 PROGR
Page 438 and 439: 8.0 Registers (Continued) Table II
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Page 442 and 443: Table of Contents 1.0 ABSOLUTE MAXI
Page 444 and 445: 3.0 AC Electrical Characteristics T
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Page 450 and 451: 5.0 Block Diagram AO A, A2 CSD CSI
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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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-----------------------------------
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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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-----------------------------------
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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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.----------------------------------
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-----------------------------------
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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 ~ ,---------
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Applications Information (Continued
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Absolute Maximum Ratings (Notes 1 &
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Description of Pin Functions Pin No
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Electrical Characteristics Unless o
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C'I 5 Pin Descriptions (Continued)
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IlAV22 RXIN LOCAL OSCILLATOR (L.O.)
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Functional Description (Continued)
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Functional Description (Continued)
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Absolute Maximum Ratings* If Milita
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Electrical Characteristics unless o
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Functional Description* (Continued)
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,...A212AT RECEIVE FILTER p--------
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TABLE III. Remote Digital Loopback
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.... ~ ~ U) r----------------------
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.,... U) Z 3020 LPRINT USING" 1111
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. II) or- II) Z
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,.. i ~~---------------------------
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Section 6 Transmission Line Drivers
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~National ~ Semiconductor Transmiss
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~National ~ Semiconductor OS 1488 Q
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J?'A National ~ Semiconductor OS 14
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~National ~ Semiconductor DS26C31 C
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~National ~ Semiconductor DS26C32C
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~National ~ Semiconductor DS34C86 Q
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~National ~ Semiconductor PRELIMINA
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~National ~ Semiconductor DS1692/DS
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~National ~ Semiconductor DS75150 D
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~National ~ Semiconductor DS75176A/
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-----------------------------------
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~National ~ Semiconductor DS8922/22
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~National ~ Semiconductor DS96172/~
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~National ~ Semiconductor DS961771
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~National ~ Semiconductor DS9637 AI
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• I .----------------------------
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Section 7 Physical Dimensions
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~National ~ Semiconductor All dimen
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NS Package N16A N16A(REV E) 0.092 X
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t-------------I:..':::~"':I'-------
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0.11M-0.118 (2.642-2.9971 .. ••
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NOTES
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~National ~ Semiconductor Bookshelf
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RELIABILITY HANDBOOK-1986 Reliabili
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NATIONAL SEMICONDUCTOR CORPORATION
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NATIONAL SEMICONDUCTOR CORPORATION
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~ National ~ Semiconductor
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