SN55ALS161 Datasheet, PDF (4/16 Pages) Texas Instruments – OCTAL GENERAL-PURPOSE INTERFACE BUS TRANSCEIVERS

SN55ALS161, SN75ALS161
OCTAL GENERAL-PURPOSE INTERFACE BUS TRANSCEIVERS
SLLS019E – JUNE 1986 – REVISED NOVEMBER 1999
schematics of inputs and outputs
EQUIVALENT OF ALL CONTROL INPUTS
VCC
9 kΩ
NOM
TYPICAL OF SRQ, NDAC, AND NRFD GPIB I/O PORT
1.7 kΩ
NOM
10 kΩ
NOM
Input
4 kΩ
NOM
GND
Input/Output Port
Circuit inside dashed lines is on the driver outputs only.
TYPICAL OF ALL I/O PORTS EXCEPT SRQ, NDAC, NRFD GPIB I/O PORTS
R(eq)
1.7 kΩ
NOM
10 kΩ
NOM
4 kΩ
NOM
4 kΩ
NOM
Input/Output Port
Driver output R(eq) = 30 Ω NOM
Receiver output R(eq) = 110 Ω NOM
R(eq) = equivalent resistor
Circuit inside dashed lines is on the driver outputs only.
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