74LVC2244APW,118

Overview

The Nexperia 74LVC2244APW,118 is an octal buffer and line driver featuring 3-state outputs housed in a TSSOP20 package. It operates within a supply voltage range of 1.2 V to 3.6 V and accepts input voltages up to 5.5 V. The device integrates 30 Ω series termination resistors and includes IOFF circuitry for partial power-down protection. It supports two independent 4-bit buffers or one 8-bit buffer configuration with Schmitt-trigger inputs.

Feature Summary

• Integrates 30 Ω series termination resistors for signal integrity
• Provides IOFF circuitry to prevent backflow current during power-down
• Features Schmitt-trigger inputs for tolerance of slow rise and fall times
• Supports direct interface with TTL levels and 5 V tolerant I/O

Applications

• Buffering and line driving in mixed 3.3 V and 5 V environments
• Partial power-down applications requiring output disablement
• Systems utilizing 3-state bus architectures

Procurement Notes

Verify the specific ordering suffix '118' corresponds to the TSSOP20 (SOT360-1) package variant. Confirm that the required operating temperature range aligns with the -40 °C to +125 °C specification provided in the datasheet. Ensure design compatibility with the 1.2 V to 3.6 V supply voltage limits before procurement.

Selection Notes

Select this component when an octal buffer with integrated series termination is required. It is suitable for designs needing 5 V tolerant inputs while operating at lower supply voltages. The inclusion of IOFF functionality makes it appropriate for systems requiring safe partial power-down states without external protection components.

Part Context

This part belongs to the 74LVC2244A family of octal buffers. The APW suffix specifically denotes the TSSOP20 plastic thin shrink small outline package with a 4.4 mm body width. Other variants in the family include SO20 and DHVQFN20 packages, offering flexibility for different PCB layout constraints.

Replacement Considerations

Direct substitutes within the same family include 74LVC2244AD (SO20 package) and 74LVC2244ABQ (DHVQFN20 package). These alternatives share identical electrical specifications but differ in physical footprint and pinout orientation.