SN74LS629NSRE4

Programmable Timers And Oscillators Overview

The SN74LS629NSRE4 is a voltage-controlled oscillator (VCO) from the Texas Instruments SN74LS62x series, designed for LS logic applications. It operates within a supply voltage range of 4.75 V to 5.25 V and supports an operating temperature range of 0°C to +70°C. The device is housed in a 16-pin SOP (NS) package with a lead finish of NIPDAU. It features Level-1 moisture sensitivity rating (260°C unlim). The component functions as a single-function oscillator where frequency is modulated by an external control voltage.

Programmable Timers And Oscillators Feature Summary

• Voltage-Controlled Oscillator functionality using LS logic technology
• Standard 5V operation (4.75 V to 5.25 V)
• 16-pin Small Outline Package (SOP/NS)
• RoHS compliant with NIPDAU lead finish

Programmable Timers And Oscillators Applications

• Frequency modulation circuits
• Voltage-to-frequency conversion systems
• Signal generation modules

Programmable Timers And Oscillators Procurement Notes

Verify the specific ordering suffix 'SR' corresponds to the tape-and-reel packaging format containing 2000 units per reel. Confirm that the NIPDAU lead finish meets the solderability requirements for the intended assembly process. Ensure the 0°C to +70°C commercial temperature grade aligns with the environmental conditions of the final application.

Programmable Timers And Oscillators Selection Notes

Select this component when a TTL-compatible voltage-controlled oscillator is required for standard 5V logic environments. Compare against the SN74LS628 if a different pinout or specific internal configuration is needed. Verify that the SOP-16 footprint matches the PCB layout constraints and that the thermal dissipation capabilities are sufficient for the expected duty cycle.

Programmable Timers And Oscillators Part Context

This part belongs to the SN74LS624 through SN74LS629 family of voltage-controlled oscillators manufactured by Texas Instruments. These devices utilize Low-power Schottky (LS) bipolar technology to provide improved speed and power consumption characteristics compared to standard TTL. The SN74LS629 variant specifically offers distinct timing characteristics defined in the SDLS186 datasheet.

Programmable Timers And Oscillators Replacement Considerations

Direct replacements include other SN74LS629 variants such as SN74LS629N (PDIP), SN74LS629D (SOIC), or SN74LS629DR (SOIC Tape & Reel). Cross-family substitution requires careful evaluation of drive strength and propagation delay differences between LS and HC/HCT technologies.