74HC125D,653

Overview

The Nexperia 74HC125D,653 is a quad buffer and line driver featuring three-state outputs controlled by active LOW enable inputs. It operates within a supply voltage range of 2.0 V to 6.0 V and supports an ambient temperature range from -40 °C to +125 °C. The device utilizes CMOS technology for low power dissipation and high noise immunity. It is housed in a 14-lead plastic small outline package (SO14) with a body width of 3.9 mm.

Feature Summary

• Provides four non-inverting buffers with three-state outputs controlled by active LOW enable inputs
• Features input clamp diodes allowing interface to voltages exceeding the supply voltage using current limiting resistors
• Complies with JEDEC standards JESD8C and JESD7A for specified operating conditions

Applications

• High-speed data bus buffering
• Line driving applications requiring three-state control
• Interface circuits connecting logic levels across different voltage domains

Procurement Notes

Verify the specific ordering suffix matches the required package type and temperature range. Confirm that the component meets RoHS3 compliance requirements for your manufacturing process. Ensure ESD handling procedures are followed during assembly due to the CMOS construction. Cross-reference the datasheet revision date against your design specifications to ensure compatibility with latest JEDEC standards.

Selection Notes

Select this component when a quad buffer with independent three-state control is required. The wide supply voltage range allows flexibility in system design. Verify that the input logic levels match the source circuitry, as HC series devices utilize CMOS levels. Consider the thermal derating characteristics if operating near the maximum temperature limit.

Part Context

This part belongs to the 74HC/HCT logic family, which is pin-compatible with Low-power Schottky TTL (LSTTL). The 'D' suffix indicates the SO14 package variant. The '653' suffix is a Nexperia internal code related to packaging and marking details. It serves as a standard solution for signal buffering in digital systems.

Replacement Considerations

Check for direct equivalents such as the 74HCT125D variants if TTL input levels are specifically needed. Verify pinout compatibility before substituting with other manufacturers' quad buffers. Ensure the replacement maintains the same three-state output functionality and package dimensions.