JM38510/65453BSA

Latches Overview

The Texas Instruments JM38510/65453BSA is a military-grade SN54HCT373 octal transparent D-type latch with 3-state outputs. It operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating temperature range of -55 °C to 125 °C. The device features high-current true outputs capable of driving up to 15 LSTTL loads, with typical propagation delays of 21 ns at 5 V. It utilizes a 20-pin Ceramic Flat Package (CFP) housing.

Latches Feature Summary

• Transparent D-type latching mechanism allows data capture when the latch-enable input is active.
• High-current 3-state outputs enable direct connection to bus lines without external pull-up components.
• TTL-voltage compatible inputs ensure compatibility with standard logic families.

Latches Applications

• Buffer registers
• I/O ports
• Bidirectional bus drivers
• Working registers

Latches Procurement Notes

Verify that the component matches the specific military qualification standards required for your application. Confirm the package type is the 20-pin CFP variant associated with this part number. Ensure handling procedures account for ceramic packaging characteristics and electrostatic discharge sensitivity during installation.

Latches Selection Notes

Select this component when a radiation-tolerant or high-reliability octal latch is required for harsh environments. The HCT technology provides CMOS low power consumption while maintaining TTL-compatible input levels. Verify that the 3-state output drive strength meets the load requirements of the target circuitry.

Latches Part Context

This part belongs to the SN54 series of high-speed CMOS logic devices manufactured by Texas Instruments. It is a qualified version of the commercial SN54HCT373, designed for military and aerospace applications requiring extended temperature ranges and enhanced reliability compared to standard catalog parts.

Latches Replacement Considerations

SNJ54HCT373W

Latches FAQ

What is the function of the Output Enable (OE) pin?

The OE pin places the eight outputs into either a normal logic state or a high-impedance state, allowing the outputs to be disconnected from the bus without affecting internal latch operations.

How does the latch-enable (LE) input control data transfer?

When the LE input is high, the Q outputs follow the D inputs (transparent mode). When LE goes low, the data present at the D inputs is latched and held at the Q outputs.