TheTTL - Al Kossow's Bitsavers

TBP28SA42
4096 BITS (512 WORDS BY 8 BITS)
STANDARD PROGRAMMABLE READ·ONLY MEMORIES WITH OPEN·COLLECTOR OUTPUTS
logic symbol
AO
Al
A2
A3
A4
A5
AS
A7
AS
G
(1)
(2)
(3)
(4)
(5)
(lS)
(111
(18)
(19)
(15) r-.....
0
S
EN
TBP28SA42
PROM 512 X 8
ASL
ASL
ASL
0 ASL
>Asn
ASL
ASL
ASL
ASL
(S)
(7)
(8)
(9)
(11)
(12)
(13)
(14)
pin assignment
TBP28SA42
J OR N PACKAGE
(TOP VIEW)
00 AO Vee
01 A1 A8
02 A2 A7
03 A3 A6
04 A4 A5
05 00 IT
os 01 07
07 02 06
03 05
GND 04
recommended operating conditions
Vee
VIH
ViL
VOH
IOL
TA
PARAMETER
Supply voltage
High-level input voltage
Low-level input voltage
High-level output voltage
Low-level output current
Operating free-air temperature range
MJ
J OR N
MIN NOM MAX MIN NOM MAX
UNIT
4.5 5 5.5 4.75 5 5.25 V
2 2 V
0.8 0.8 V
5.5 5.5 V
16 16 rnA
-55 125 0 70 °e
electrical characteristics over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONSt
MJ
J OR N
MIN TYP* MAX MIN TYP* MAX
UNIT
VIK Vee = MIN. II = -18 rnA -1.2 -1.2 V
IOH Vee = MIN.
I VOH = 2.4 V 0.05 0.05
rnA
I VOH = 5.5 V 0.1
0.1
VOL Vee = MIN. IOL = 16mA 0.5 0.5 V
II Vee = MAX. VI = 5.5 V 1 1 rnA
IIH Vee = MAX. VI = 2.7 V 25 25 p.A
IlL' Vee = MAX. VI = 0.5 V -0.25 -0.25 rnA
lee Vee = MAX 105 135 105 135 rnA
switching ct:Jaracteristics over recommended ranges of T A and Vee (unless otherwise noted)
PARAMETER
TEST MJ J OR N
CONDITIONS MIN TYP* MAX MIN TYP*
talA) Access time from address eL = 30 pF 35 75 35
ta(SJ Access time from chip select (enable time) RL1 = 300 {} 20 45 20
.tPLH
Propa~ation delay time low-to-high-Ievel RL2 = 600 {}
output from chip select See Note 3
15 45 15
MAX
UNIT
65 ns
35 ns
35 ns
tFor conditions shown as MIN or MAX. use appropriate value specified under recommended operating conditions.
,tAli typical values are at Vee = 5 V. TA = 25°e.
NOTE 3: Load circuits and voltage waveforms are shown in Section 1.
4-16 . TEXAS ..
INSTRUMENTS
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