SN74LV157ANSR

Overview

The SN74LV157ANSR is a quadruple 2-line to 1-line data selector/multiplexer from the Texas Instruments LV series. It operates within a supply voltage range of 2 V to 5.5 V and accepts input voltages up to 5.5 V. The device features a maximum propagation delay of 7.5 ns at 5 V and typical output ground bounce of 2 V at 25°C. It provides latch-up performance exceeding 100 mA per JESD 78, Class II standards. The component is housed in a 16-pin SOP (NS) package.

Feature Summary

• Supports wide supply voltage operation from 2 V to 5.5 V
• Inputs tolerate 5.5 V signals for direct interfacing with 5 V logic
• Includes active-low output strobe for precise data selection control

Applications

• Servers
• LED Displays
• Network Switches
• Telecom Infrastructure
• Motor Drivers

Procurement Notes

Verify the specific package suffix against the orderable addendum to confirm physical dimensions and pinout compatibility. Ensure the selected variant meets the required operating temperature range and moisture sensitivity level for the intended assembly process. Cross-reference the manufacturer part number with official documentation to validate current production status and availability.

Selection Notes

Select this component when designing systems requiring multiplexing between two data sources across four independent channels. The LV technology supports low-voltage logic families while maintaining 5 V tolerance on inputs. Consider the 7.5 ns propagation delay and power dissipation capacitance specifications to ensure signal integrity and timing requirements are met within the target circuit design.

Part Context

This device belongs to the SN74LV157A family of quadruple 2-line to 1-line data selectors. It is designed for high-speed digital applications requiring reliable data routing. The LV series offers improved performance over standard LVC devices, providing faster switching speeds and lower power consumption suitable for modern embedded and communication systems.

Replacement Considerations

SN74LV157ADBR

FAQ

What is the function of the G input?

The G input serves as an active-low output strobe. When G is low, the selected data is passed to the outputs; when G is high, the outputs are disabled.

How does the device handle unused inputs?

Unused inputs must not float. They should be connected to a defined logic high or logic low voltage according to the device's input voltage specifications to prevent undefined operational states.