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MC74HC373A
Octal 3-State Non-Inverting Transparent Latch
SEMICONDUCTOR TECHNICAL DATA -
High–Performance Silicon–Gate CMOSThe MC54/74HC373A is identical in pinout to the LS373. The device
inputs are compatible with standard CMOS outputs; with pullup resistors,
they are compatible with LSTTL outputs.
These latches appear transparent to data (i.e., the outputs change
asynchronously) when Latch Enable is high. When Latch Enable goes low,
data meeting the setup and hold time becomes latched.
The Output Enable input does not affect the state of the latches, but when
Output Enable is high, all device outputs are forced to the high–impedance
state. Thus, data may be latched even when the outputs are not enabled.
The HC373A is identical in function to the HC573A which has the data
inputs on the opposite side of the package from the outputs to facilitate PC
board layout.
The HC373A is the non–inverting version of the HC533A. Output Drive Capability: 15 LSTTL Loads Outputs Directly Interface to CMOS, NMOS and TTL Operating Voltage Range: 2.0 to 6.0 V Low Input Current: 1.0 μA High Noise Immunity Characteristic of CMOS Devices In Compliance with the Requirements Defined by JEDEC Standard
No. 7A Chip Complexity: 186 FETs or 46.5 Equivalent Gates
LOGIC DIAGRAMDATA
INPUTS18OUTPUT ENABLE
PIN 20 = VCC
PIN 10 = GND
NONINVERTING
OUTPUTSLATCH ENABLE
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