SIZE
A
5962-94663
STANDARD
MICROCIRCUIT DRAWING
DEFENSE SUPPLY CENTER COLUMBUS
COLUMBUS, OHIO 43216-5000
REVISION LEVEL
D
SHEET
38
DSCC FORM 2234
APR 97
TABLE III. Pin descriptions - Continued.
Name
Type 1/
Active 2/
Description
Status signals
TERACT
TO
AL
Terminal Active. This output pin indicates that the terminal is actively processing a
1553 command.
MSG_INT
TTO 3/
AL
Message Interrupt. This pin is active for three clock cycles (i. e., 125 ns pulse) upon
the occurrence of interrupt events which are enabled.
YF_INT
TTO 3/
AL
You Failed Interrupt. This pin is active for three clock cycles (i. e., 125 ns pulse)
upon the occurrence of interrupt events which are enabled.
READY
TO
AL
Ready. This signal indicates the device has completed initialization or BIT, and
regular execution may begin.
Power/Ground
V
DD
--
--
+5 volt logic power (
±
10%)
Device types 01, 03, 04, 06, 07, 09, and 10: +5 volt transceiver power (+10%, -5%).
Recommended de-coupling capacitors: 4.7
μ
F and 0.1
μ
F.
Device type 02: +5 volt transceiver power (
±
5%).
Device types 05, 08, and 11: +5 volt transceiver power (
±
10%).
Recommended de-coupling capacitors: 4.7
μ
F and 0.1
μ
F.
Device types 01, 03, 04, 06, 07, 09, and 10 only: -12 or -15 volt transceiver power
(
±
5%).
Recommended de-coupling capacitors: 4.7
μ
F and 0.1
μ
F.
Digital ground.
Transceiver ground.
V
CC
--
--
V
EE
--
--
V
SS
GND
--
--
--
--
1/ TO = TTL output
TTB = Three-state TTL bi-directional
CI = CMOS input
TUI = TTL input (internally pulled high)
TI = TTL input
TTO = Three-state TTL output
DIO = Differential input/output
All pins specified as TTL are actually CMOS transistor pairs designed for TTL compatibility.
2/ AH = Active high
AL = Active low
3/ High impedance and active low.