National Semiconductor 54FCT533 Octal Transparent Latch Data Sheet User Guide
Summary
The 54FCT533 is an integrated circuit featuring eight D-type transparent latches with TRI-STATE outputs, making it ideal for advanced bus-organized system applications. This manual serves as a comprehensive technical guide for hardware engineers and designers, detailing functional specifications, electrical ratings, truth tables, and timing diagrams crucial for accurate implementation. It provides detailed instructions on utilizing the latching capabilities and managing state changes via Output Enable (OE) control, ensuring reliable data interfacing within complex digital circuits.
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54FC T533 ctal Transparent Latch ith TR I-S TA TE utputs
September
54FCT533 Octal Transparent Latch with TRI-STATE® Outputs General Description Features
The FCT533 consists of eight latches with TRI-STATE out- Eight latches in single package
puts for bus organized system applications. The flip-flops ap- TTL input and output level compatible pear transparent to the data when Latch Enable (LE) is CMOS power consumption HIGH. When LE is low, the data satisfying the input timing re- TRI-STATE outputs drive bus lines or buffer memory quirements is latched. Data appears on the bus when the address registers Output Enable (OE) is LOW. When OE is HIGH, the bus out-
Output sink capability of 32m A, source capability of
put is in the high impedance state.
m A Inverted version of the FCT373 Standard Microcircuit Drawing (SMD) 5962-8865101
Logic Symbols
IEEE/IEC
DS100969-1
DS100969-2
Pin Description Names
D0–D7 Data Inputs
LE Latch Enable Input OE Output Enable Input O0–O7 TRI-STATE Latch
Outputs
TRI-STATE® is registered trademark of National Semiconductor Corporation. FACT™ is trademark of Fairchild Semiconductor Corporation.
National Semiconductor Corporation DS100969 www.national.com
Page Summary Contents For National Semiconductor 54FCT533 Octal Transparent Latch Data Sheet User Guide
Manual Details
| Brand | National |
|---|---|
| Pages | 7 |
| File Size | 149.01 KB |
| Published | May 29, 2026 |
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Frequently Asked Questions
How does the FCT533 behave when Latch Enable (LE) is HIGH?
When LE is HIGH, the latches are transparent, meaning a latch output changes state every time its D input changes.
What condition controls the outputs entering bus lines?
The TRI-STATE outputs are controlled by Output Enable (OE); they enter high impedance mode when OE is HIGH.
What operational data range should be observed for this device?
The recommended operating temperature range for the FCT533 is -55°C to +125°C.
What are the limits for the supply voltage (VCC)?
The FCT533 supports a DC supply voltage ranging from -0.5V to +7.0V.