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UT54ACTS373

ETC
Part Number UT54ACTS373
Manufacturer ETC
Description Octal Transparent Latches
Published Nov 18, 2008
Detailed Description UT54ACS373/UT54ACTS373 Radiation-Hardened Octal Transparent Latches with Three-State Outputs FEATURES 8 latches in a si...
Datasheet PDF File UT54ACTS373 PDF File

UT54ACTS373
UT54ACTS373

Overview
UT54ACS373/UT54ACTS373 Radiation-Hardened Octal Transparent Latches with Three-State Outputs FEATURES 8 latches in a single package Three-state bus-driving true outputs Full parallel access for loading radiation-hardened CMOS www.
DataSheet4U.
com - Latchup immune High speed Low power consumption Single 5 volt supply Available QML Q or V processes Flexible package - 20-pin DIP - 20-lead flatpack DESCRIPTION The UT54ACS373 and the UT54ACTS373 are 8-bit latches with three-state outputs designed for driving highly capacitive or relatively low-impedance loads.
The device is suitable for buffer registers, I/O ports, and bidirectional bus drivers.
The eight latches are transparent D latches.
While the enable (C) is high the Q outputs will follow the data (D) inputs.
When the enable is taken low, the Q outputs will be latched at the levels that were set up at the D inputs.
An output-control input (OC) places the eight outputs in either a normal logic state (high or low logic levels) or a high-impedance state.
The high-impedance third state and increased drive provide the capability to drive the bus line in a bus-organized system without need for interface or pull-up components.
The output control OC does not affect the internal operations of the latches.
Old data can be retained or new data can be entered while the outputs are off.
The devices are characterized over full military temperature range of -55 C to +125 C.
FUNCTION TABLE INPUTS OC L L L H C H H L X nD H L X X OUTPUT nQ H L nQ0 Z1 PINOUTS 20-Pin DIP Top View OC 1Q 1D 2D 2Q 3Q 3D 4D 4Q VSS 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 VDD 8Q 8D 7D 7Q 6Q 6D 5D 5Q C 20-Lead Flatpack Top View OC 1Q 1D 2D 2Q 3Q 3D 4D 4Q VSS 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 VDD 8Q 8D 7D 7Q 6Q 6D 5D 5Q C LOGIC SYMBOL OC C (1) (11) EN C1 1D (3) (4) 2D 3D (7) (8) 4D 5D (13) 6D (14) 7D (17) 8D (18) 1D (2) 1Q (5) 2Q (6) 3Q (9) (12) (15) (16) (19) 4Q 5Q 6Q 7Q 8Q Note: 1.
Data may be latched internally.
Note: 1.
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