SN74ALVC244DWG4

Buffers, Drivers, Receivers, Transceivers Overview

The SN74ALVC244DWG4 is an octal buffer and line driver manufactured by Texas Instruments, belonging to the ALVC logic family. It features eight non-inverting channels organized as two independent 4-bit drivers with separate output-enable inputs. Designed for operation from 1.65 V to 3.6 V, it provides high-speed performance with a maximum propagation delay of 2.8 ns at 3.3 V. The device supports ±24 mA output drive current and includes three-state outputs that enter a high-impedance state when disabled. It operates within a temperature range of -40°C to +85°C and is housed in a 20-pin SOIC (DW) package.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Provides octal buffering with two independent 4-bit sections controlled by separate OE inputs
• Supports mixed-mode signal operations allowing 5-V tolerant inputs while operating at lower supply voltages
• Features Ioff circuitry to prevent excessive current draw during partial-power-down or hot-insertion events
• Delivers high-speed data transmission with low propagation delays suitable for memory and clock buffering

Buffers, Drivers, Receivers, Transceivers Applications

• Memory module address and data bus driving
• Clock distribution and buffering in high-speed digital systems
• Mobile and handheld equipment requiring low-voltage operation
• Consumer electronics utilizing CMOS logic families

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix 'G4' corresponds to lead-free and RoHS-compliant manufacturing standards as defined by Texas Instruments. Confirm the package type matches the required PCB footprint, specifically the 20-pin SOIC (DW) variant. Ensure design compatibility with the specified voltage range and thermal requirements before finalizing procurement orders.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing circuits requiring octal buffering with independent control over two 4-bit groups. It is appropriate for applications needing 3-state outputs to manage bus contention. Consider the ALVC series for superior speed compared to standard LVC devices while maintaining low power consumption. Verify input voltage levels match the system's logic thresholds for reliable switching.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74ALVC244 family of octal buffers and drivers. The 'DW' designation indicates the 20-pin Small Outline Integrated Circuit package. The 'G4' suffix typically denotes environmental compliance, specifically lead-free construction and adherence to RoHS directives. This component serves as a critical interface element for managing data flow between different voltage domains in complex digital architectures.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74ALVC244DWR

Buffers, Drivers, Receivers, Transceivers FAQ

How does the device handle partial power-down conditions?

The SN74ALVC244DWG4 incorporates Ioff support circuitry. This feature automatically places the outputs into a high-impedance state if the device is powered down while the system remains active, preventing back-driving of the power supply.

What is the function of the separate OE inputs?

The device contains two Output Enable (OE) inputs, one for each 4-bit section. When an OE input is low, the corresponding section passes data from the A inputs to the Y outputs. When high, those specific outputs enter a high-impedance state.