SN54173, SN54LS173A, SN74173, SN74LS173A
4-BIT D-TYPE REGISTERS
WITH 3-STATE OUTPUTS
SDLS067A – OCTOBER 1976 – REVISED JUNE 1999
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
schematics of inputs and outputs
Equivalent of Each Input
Equivalent of Each Input
Typical of All Outputs
VCC
Input
4 k
NOM
VCC
Input
20 k
NOM
VCC
Output
90
NOM
VCC
Output
100
NOM
’173
’LS173A
Typical of All Outputs
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, V
CC
(see Note 1)
Input voltage: ’173
’LS173A
Off-state output voltage
Package thermal impedance,
θ
JA
(see Note 2): D package
–0.5 V to 7 V
–0.5 V to 5.5 V
–0.5 V to 7 V
–0.5 V to 5.5 V
113
°
C/W
78
°
C/W
–65
°
C to 150
°
C
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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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N package
Storage temperature range, T
stg
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES:
1. Voltage values are with respect to network ground terminal.
2. The package thermal impedance is calculated in accordance with JESD 51, except for through-hole packages, which use a trace
length of zero.
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