JM38510/65403BRA

Latches Overview

The Texas Instruments JM38510/65403BRA is a military-grade SN54HC373 octal transparent D-type latch with 3-state outputs. It operates within a supply voltage range of 2V to 6V and supports an operating temperature range from -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 13ns at 5V. It utilizes a 20-pin ceramic dual in-line package (CDIP).

Latches Feature Summary

• Contains eight transparent D-type latches sharing common latch enable and output enable inputs.
• Provides high-current 3-state true outputs designed for driving highly capacitive or low-impedance loads.
• Operates across a wide supply voltage range of 2V to 6V with low power consumption.

Latches Applications

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

Latches Procurement Notes

Verify the specific ordering suffix 'BRA' corresponds to the CDIP package variant when sourcing. Confirm that the component meets MIL-PRF-38535 Class B requirements if applicable to the system design. Ensure proper handling procedures are followed due to the sensitivity of CMOS logic devices to electrostatic discharge during installation.

Latches Selection Notes

Select this component for applications requiring robust data storage in harsh environments due to its extended temperature rating. The HC series technology offers lower power consumption compared to older LS families while maintaining compatibility with standard TTL loads. Verify that the 20-pin CDIP footprint matches the target PCB layout constraints.

Latches Part Context

This part belongs to the SN54HC373 family of octal latches manufactured by Texas Instruments. It is a military-specification version of the commercial SN74HC373, offering enhanced reliability and wider operating conditions. The device integrates eight independent latches into a single package to simplify circuit design for parallel data handling.

Latches Replacement Considerations

SN54HC373J

Latches FAQ

How does the latch enable input affect the output state?

When the latch enable (LE) input is high, the Q outputs follow the D inputs. When LE is taken low, the outputs hold the last state set at the D inputs regardless of subsequent changes.

What is the function of the output enable input?

The active-low output enable (OE) controls the 3-state outputs. When OE is low, outputs actively drive; when OE is high, outputs enter a high-impedance state without affecting the stored latch data.