SN74ALS08DG4

Overview

The SN74ALS08DG4 is a quadruple 2-input positive-AND gate from the Texas Instruments 74ALS logic family. It operates within a supply voltage range of 4.5 V to 5.5 V and features an SOIC-14 surface-mount package. Key electrical parameters include a low-level output current of 8 mA, a high-level output current of -400 µA, and a propagation delay of 14 ns at 5 V with a 50 pF load. The device supports a commercial operating temperature range from 0 °C to +70 °C.

Feature Summary

• Contains four independent 2-input AND logic gates in a single integrated circuit
• Utilizes Advanced Low-power Schottky (ALS) technology for optimized speed and power consumption
• Provides push-pull outputs capable of sourcing and sinking specified drive currents

Applications

• Digital signal processing logic circuits
• Data acquisition system gating
• Microprocessor address decoding networks

Procurement Notes

Verify the specific suffix 'DG4' against the manufacturer's official documentation to confirm RoHS compliance status and lead-free material specifications. Ensure the ordering part number matches the exact package variant required for your PCB footprint. Cross-reference the datasheet revision history to validate any recent design or specification changes before finalizing procurement.

Selection Notes

Select this component when designing systems requiring the specific switching characteristics of the ALS series. Verify that the 14 ns propagation delay meets the timing constraints of the target application. Confirm that the 8 mA sink current capability is sufficient for the connected loads without exceeding thermal limits within the specified commercial temperature range.

Part Context

This component belongs to the broader 74ALS08 family of quad 2-input AND gates manufactured by Texas Instruments. It shares functional pinouts with other variants such as the SN74ALS08DR and SN74ALS08NSR, differing primarily in packaging style and manufacturing revisions. The DG4 designation specifically identifies the tape-and-reel SOIC-14 version compliant with specific environmental standards.

Replacement Considerations

Direct substitutes include SN74ALS08DR and SN74ALS08NSR. Verify pin compatibility and electrical parameter equivalence before substitution.