TheTTL - Al Kossow's Bitsavers

TBP28S2708A
8192 BITS (1024 WORDS BY 8 BITS)
STANDARD PROGRAMMABLE READ·ONLY MEMORIES WITH 3·STATE OUTPUTS
logic symbol
(8)
AO
(7)
A1
(6)
A2
(5)
A3
(4)
A4
(3)
AS
(2)
A6
(1)
A7
(23)
A8
(22)
A9
(20) f"-......
G
TBP2SS270SA
PROM 1024 X 8
0
AV'
AV'
AV'
0
AV'
>A 1023 AV'
AV'
AV'
AV'
9--
EN
(9)
(10)
(11)
(13)
(14)
(15)
(16)
(17)
00
01
02
03
04
05
06
Q7
pin assignment
TBP2SS270SA
NW PACKAGE
(TOP VIEW)
A7
VCC
A6
AS
A5
A9
A4
NC
A3
IT
A2
NC
A1
NC
AD
Q7
QO
Q6
Q1
Q5
Q2
Q4
GND
Q3
recommended operating conditions
Vee
VIH
VIL
10H
10L
TA
PARAMETER
Supply voltage
High-level input voltage
Low-level input voltage
High-level output current
Low-level output current
Operating free-air temperature range
NW
UNIT
MIN NOM MAX
4.75 5 5.25 V
2 V
O.S V
-3.2 mA
12 mA
0 70 °e
electrical characteristics over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
NW
Typt MAX
UNIT
VIK Vee = 4.75, II = -1S mA -1.2 V
VOH Vee = 4.75, 10H = -3.2 mA 2.4 3.1 V
VOL Vee = 4.75, 10L = 12 mA 0.5 V
10ZH Vee = 5.25, Vo = 2.4 V 50 JlA
10ZL Vee = 5.25, Vo = 0.5 V -50 JlA
II Vee = 5.25, VI = 5.5 V 1 mA
IIH Vee = 5.25, VI = 2.7 V 25 p.A
IlL Vee = 5.25, VI = 0.5 V -0.25 mA
10S+ Vee = 5.25 -20 -100 mA
lee Vee = 5.25 110 165 mA
(f)
2
o
ex:
a.
switching characteristics over recommended ranges of TA and Vee (unless otherwise noted)
PARAMETER
TEST
NW
CONDITIONS MIN Typt MAX
talA) Access time from address eL = 30 pF 45 70
ta(S) Access time from chip select (enable time) See Note 3 20 40
tdis Disable time
eL = 5 pF
See Note 3
20 40
UNIT
ns
ns
ns
t All typical values are at Vee = 5 V, T A = 25°e.
+Not more than one output should be shorted at a time, and duration of the short circuit should not exceed one second.
NOTE 3: Load circuits and voltage waveforms are shown in Section 1.
TEXAS -I!}
INSTRUMENTS
POST OFFICE BOx 225012 • DALLAS, TExAS 75265
4-25