DM74LS125ASJ

Overview

The DM74LS125ASJ is a quad 3-state buffer manufactured by Fairchild Semiconductor in a 14-lead Small Outline Package (SOIC). It contains four independent non-inverting gates, each providing one bit of buffering with three-state output capability. The device operates within an ambient temperature range of 0°C to 70°C and accepts standard TTL logic levels.

Feature Summary

• Contains four independent non-inverting buffer gates
• Provides three-state output control for bus driving applications
• Compatible with standard TTL logic input levels

Applications

• Bus-oriented memory and address drivers
• Clock drivers and buffered outputs
• General-purpose digital signal buffering

Procurement Notes

Verify the manufacturer origin, as Fairchild's semiconductor division is now part of onsemi. Confirm the package type matches the required 14-lead SOIC footprint. Ensure the operating temperature range meets the specific environmental requirements of the target application circuit.

Selection Notes

Select this component when a quad non-inverting buffer with high-impedance states is required for bus isolation. It serves as a direct replacement for other LS-series quad buffers with enable controls. Consider power dissipation limits and load capacitance when designing the driver stage for high-speed signals.

Part Context

This part belongs to the DM74LS series of low-power Schottky TTL logic devices. The 'A' suffix typically denotes a specific package variant or revision, while 'SJ' indicates the 14-lead SOIC package configuration. It is functionally equivalent to the standard SN74LS125 but packaged for surface-mount assembly.

Replacement Considerations

Direct functional substitutes include the SN74LS125N and MC74LS125ADR2G. Verify pin compatibility and electrical specifications before swapping manufacturers.