SN74LS628DR

Programmable Timers And Oscillators Overview

The SN74LS628DR is a voltage-controlled oscillator (VCO) from the Texas Instruments SN74LS series, designed for frequency modulation and signal generation applications. It operates within a supply voltage range of 4.75 V to 5.25 V and supports a commercial operating temperature range of 0°C to +70°C. The device is housed in a 14-pin SOIC surface-mount package with NIPDAU lead finish. Key electrical characteristics include a low-level output current of 8 mA and a high-level output current of -400 µA. The component complies with RoHS standards and is classified under Moisture Sensitivity Level 1.

Programmable Timers And Oscillators Feature Summary

• Voltage-Controlled Oscillator functionality for frequency modulation
• Standard 74LS logic family compatibility with 4.75 V to 5.25 V supply
• Surface-mount 14-pin SOIC package configuration
• RoHS compliant with NIPDAU lead finish

Programmable Timers And Oscillators Applications

• Frequency modulation circuits
• Signal generation systems
• Oscillator-based timing applications

Programmable Timers And Oscillators Procurement Notes

Verify the specific ordering suffix 'DR' corresponds to the tape-and-reel packaging format containing 2500 units per reel. Confirm that the NIPDAU lead finish meets the solderability requirements for the intended assembly process. Ensure the commercial temperature grade (0°C to +70°C) aligns with the operational environment constraints of the final design.

Programmable Timers And Oscillators Selection Notes

Select this component when a monolithic voltage-controlled oscillator compatible with standard LS-TTL logic levels is required. Verify that the input control voltage range matches the available drive signals. Consider the thermal dissipation capabilities of the SOIC-14 package if operating near the upper limits of the specified temperature range.

Programmable Timers And Oscillators Part Context

This part belongs to the SN74LS624 through SN74LS629 family of voltage-controlled oscillators manufactured by Texas Instruments. The 'SN74' prefix indicates a commercial-grade product line, while the 'LS' suffix denotes Low-power Schottky technology. The 'DR' suffix specifically identifies the SOIC package variant supplied in large tape-and-reel quantities.

Programmable Timers And Oscillators Replacement Considerations

Compatible substitutes within the same family include SN74LS624DR, SN74LS629DR, and their non-reel equivalents such as SN74LS628D or SN74LS628N. Cross-family replacements require verification of pinout compatibility and voltage control characteristics.