SN74HCS373RKSR

Overview

The SN74HCS373RKSR is an octal transparent D-type latch manufactured by Texas Instruments. It features Schmitt-trigger inputs and balanced 3-state outputs. The device operates within a supply voltage range of 2 V to 6 V and supports an extended ambient temperature range from –40°C to +125°C. It is housed in a 20-pin VQFN package with dimensions of 4.50 mm × 2.50 mm.

Feature Summary

• Schmitt-trigger input architecture provides tolerance for slow or noisy signals
• Balanced CMOS 3-state outputs allow high-impedance, driving low, or driving high states
• Low power consumption with typical supply current of 100 nA

Applications

• Parallel data storage
• Digital bus buffer

Procurement Notes

Verify the specific RKS ordering suffix corresponds to the 20-pin VQFN package configuration. Confirm that the extended temperature rating aligns with system requirements. Ensure ESD handling protocols are followed during assembly due to the sensitivity of CMOS logic devices.

Selection Notes

Select this component when noise immunity is critical due to the integrated Schmitt triggers. The wide operating voltage range allows compatibility with various logic levels. The 3-state output capability facilitates connection to shared buses without signal contention.

Part Context

This part belongs to the SN74HCS373 family of octal latches. The HCS designation indicates the inclusion of Schmitt-trigger inputs, distinguishing it from standard HC series parts. The RKSR suffix identifies the specific VQFN package and reel quantity variant.

Replacement Considerations

SN74HCS373RKT

FAQ

How do Schmitt-trigger inputs benefit this latch?

They provide hysteresis, making the device tolerant to slow transition times and noisy input signals.

What happens to the output when OE is high?

The outputs enter a high-impedance state, disconnecting them from the circuit while the internal latch retains its stored state.