Texas Instruments 990 Maintenance Manual page 12
Computer 16 lnput/16 output ttl data module
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- Operation manual (276 pages) ,
- User manual (274 pages) ,
- Manual (211 pages)
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945407-9701
Table 1-2. External Connector Pin
A~igriment
(Continued)
Pin Number
Signal Name
P2-9
OUT7-
P2-10
OUT8-
P2-11
OUT9-
P2-12
OUTlO-
P2-13
OUTll-
P2-14
OUT12-
P2-15
OUT13-
P2-16
OUT14-
P2-17
OUT15-
P2-24
IN15-
P2-25
IN14-
P2-26
IN13-
P2-27
IN12-
P2-28
INll-
P2-29
INlO-
P2-30
IN9-
P2-31
IN8-
P2-32
IN7-
P2-33
IN6-
P2-34
INS-
P2-35
IN4-
P2-36
IN3-
P2-37
IN2-
P2-38
INl-
P2-39
INO-
P2-l ,20,2 l ,40
GROUND
P2-19,22
+5 Vo.Its
Table 1-3. 16 1/0 TTL Data Module Electrical Characteristics
Specification
Peripheral inputs
Module outputs
Power (from CPU or
expansion chassis)
1-6
Requirement
0.0 to 1.0 volts for logic 1
3.0 to 5.0 volts for logic 0
Open or 3.0 to 5.0 volts for logic 0
0.0 to 0.4 volts for logic 1
+S Vdc at -0.53A
Digital Systems Division
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