MC74AC125DTR2G

Overview

The MC74AC125DTR2G is a quad 3-state buffer manufactured by onsemi using high-performance silicon-gate CMOS technology. It operates within a supply voltage range of 2.0 V to 6.0 V and features low enable inputs for four non-inverting channels. The device provides source/sink currents up to 24 mA and includes high-impedance states controlled by the OE pin. It is housed in a TSSOP-14 package with a lead pitch of 0.65 mm, designed for surface-mount applications across an ambient temperature range of -40°C to +85°C.

Feature Summary

• Quad 3-state buffering with low-enable control
• High-current output capability for driving loads
• Compatible with standard CMOS logic families

Applications

• Data bus management systems
• Clock distribution networks
• Memory address buffers

Procurement Notes

Verify the specific ordering suffix 'DTR2G' corresponds to the TSSOP-14 package and tape-and-reel shipping configuration. Confirm that the device code matches the AC series specifications rather than the ACT variant, which requires different input threshold levels. Ensure the procurement documentation explicitly references the Pb-Free status and the correct case outline number for mechanical integration.

Selection Notes

Select this component when a quad buffer with independent three-state control is required for 2V to 6V logic systems. The TSSOP-14 package offers a compact footprint suitable for dense PCB layouts. Consider the propagation delay characteristics at the target operating voltage to ensure signal integrity meets system timing requirements.

Part Context

This part belongs to the MC74AC125 family of high-speed CMOS logic devices. It serves as a non-inverting buffer with tri-state outputs, distinct from the MC74ACT125 which features TTL-compatible inputs. The DTR2G designation indicates the specific surface-mount packaging and reel quantity provided by the manufacturer.

Replacement Considerations

MC74AC125DR2G (SOIC-14 package)

FAQ

What is the function of the GND pins?

Pins 7 and 14 are Ground connections providing the reference potential for the internal circuitry.

How does the Low Enable input affect the outputs?

When the Enable input is Low, the corresponding outputs are active and follow the data inputs. When High, the outputs enter a high-impedance state.