74HC75DB,112

Latches Overview

The Nexperia 74HC75DB,112 is a quad bistable transparent latch housed in a TSSOP16 package (SOT403-1). It operates on a supply voltage range of 2.0 V to 6.0 V and complies with JEDEC standards JESD8C and JESD7A. The device features complementary Q and nQ outputs, with VCC and GND located on center pins. It includes clamp diodes on inputs for overvoltage interfacing. ESD protection exceeds 2000 V (HBM) and 1000 V (CDM). Operating temperatures span from -40 °C to +125 °C.

Latches Feature Summary

• Quad bistable transparent latch architecture with two active HIGH enable inputs controlling pairs of latches simultaneously.
• Complementary Q and nQ outputs provide flexible signal routing options.
• Inputs include clamp diodes enabling interface to voltages exceeding VCC using current limiting resistors.
• VCC and GND are positioned on center pins to facilitate thermal dissipation.

Latches Applications

• Data storage and buffering in digital logic circuits
• Parallel-to-serial data conversion interfaces
• Memory address latching systems

Latches Procurement Notes

Verify the specific ordering suffix

Latches Selection Notes

Select this component when a quad latch configuration is required within standard CMOS logic families. Ensure the design accommodates the dual enable input structure where latches 1 and 2 share one control line, while latches 3 and 4 share another. Confirm that the TSSOP16 package dimensions align with the PCB footprint requirements and that the operating voltage range matches the system power supply rails.

Latches Part Context

This part belongs to the Nexperia 74HC series, which utilizes high-speed CMOS technology. The 74HC75 specifically provides four independent bistable latches. Unlike flip-flops triggered by clock edges, these latches are level-sensitive, becoming transparent when the enable input is HIGH and storing data upon the HIGH-to-LOW transition of the enable signal.

Latches Replacement Considerations

Public confirmed substitute: 74HC75PW,118

Latches FAQ

How are the four latches controlled?

The four latches are grouped into two pairs. Latches 1 and 2 are controlled by the LE12 input, while latches 3 and 4 are controlled by the LE34 input. Both enable inputs are active HIGH.

What happens when the enable input is LOW?

When the enable input (LEnn) is LOW, the latched outputs remain stable regardless of changes at the data inputs. The data present at the inputs one setup time prior to the HIGH-to-LOW transition is stored.