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SN54173, SN54LS173A, SN74173, SN74LS173A
4-BIT D-TYPE REGISTERS
WITH 3-STATE OUTPUTS
SDLS067A – OCTOBER 1976 – REVISED JUNE 1999
D 3-State Outputs Interface Directly With
System Bus
D Gated Output-Control LInes for Enabling or
Disabling the Outputs
D Fully Independent Clock Virtually
Eliminates Restrictions for Operating in
One of Two Modes:
– Parallel Load
– Do Nothing (Hold)
D For Application as Bus Buffer Registers D Package Options Include Plastic
Small-Outline (D) Packages, Ceramic Flat
(W) Packages, Ceramic Chip Carriers (FK),
and Standard Plastic (N) and Ceramic (J)
DIPs
SN54173, SN54LS173A . . . J OR W PACKAGE SN74173 . . . N PACKAGE
SN74LS173A . . . D or N PACKAGE (TOP VIEW)
M N 1Q 2Q 3Q 4Q CLK GND
1 2 3 4 5 6 7 8
16 VCC 15 CLR 14 1D 13 2D 12 3D 11 4D 10 G2 9 G1
SN54LS173A .
SN74LS173A Datasheet
