SN74LV163ANSR

Counter Dividers Overview

The SN74LV163ANSR is a 4-bit synchronous binary counter from the Texas Instruments LV-A logic series. It operates within a supply voltage range of 2 V to 5.5 V and supports mixed-mode voltage operation on all ports. The device features internal look-ahead circuitry for fast counting and includes a ripple-carry output (RCO) for n-bit cascading. It utilizes a rising-edge triggered clock input and offers synchronous parallel loading and clearing functions. The component is housed in a 16-pin SOP package.

Counter Dividers Feature Summary

• Supports mixed-mode voltage operation across all ports
• Features internal carry look-ahead for high-speed counting applications
• Includes Ioff circuitry to support partial-power-down mode operation

Counter Dividers Applications

• High-speed synchronous counting designs
• N-bit cascaded counter systems
• Partial-power-down applications requiring output isolation

Counter Dividers Procurement Notes

Verify that the specific ordering suffix matches the required package type, as the base part number covers multiple physical packages. Confirm the active production status directly with the manufacturer or authorized distributors, as availability varies by variant. Ensure compliance with RoHS requirements if applicable to the specific manufacturing lot.

Counter Dividers Selection Notes

Select this component when a 4-bit synchronous binary counter is required for low-voltage logic families operating between 2 V and 5.5 V. The internal look-ahead feature makes it suitable for designs prioritizing speed over ripple-clock latency. Verify that the SOP-16 package dimensions align with the target PCB layout constraints.

Counter Dividers Part Context

This device belongs to the SN74LV163A family of 4-bit synchronous binary counters. The 'ANSR' designation specifically identifies the SOP-16 surface-mount package variant produced by Texas Instruments. It shares functional compatibility with other members of the LV-A series while differing in physical footprint and thermal characteristics.

Counter Dividers Replacement Considerations

SN74LV163ADBR

Counter Dividers FAQ

How does the SN74LV163ANSR handle partial-power-down scenarios?

The device incorporates Ioff circuitry that automatically disables the outputs when the device is powered down, preventing damaging current backflow through the inputs or outputs.

What mechanism enables cascading multiple counters without external gating?

The device features an internal carry look-ahead circuit and a ripple-carry output (RCO). When ENT is high, RCO goes high at the maximum count, allowing direct connection to enable subsequent stages.