74LVT240DB,112

Overview

The Nexperia 74LVT240DB,112 is a 3.3 V octal inverting buffer and line driver featuring 3-state outputs. It operates within a supply voltage range of 2.7 V to 3.6 V and supports overvoltage tolerant inputs up to 5.5 V. The device provides an output drive capability of +64 mA and -32 mA. Propagation delays are specified at a maximum of 5.2 ns at 3.3 V. It utilizes BiCMOS technology for high-speed performance and includes bus hold data inputs. The component is housed in a SO20 plastic small outline package (SOT163-1) and functions reliably across an ambient temperature range of -40 °C to +85 °C.

Feature Summary

• Features two independent output enable controls allowing configuration as two 4-bit buffers or one 8-bit buffer.
• Includes bus hold data inputs that eliminate the need for external pull-up resistors to define unused inputs.
• Provides IOFF circuitry to support partial power-down mode operation and prevent excessive current loading.
• Supports live insertion and extraction without causing bus current loading when tied to a 5 V bus.

Applications

• Octal bus interface systems
• Direct interfacing with TTL level logic circuits
• Input and output interface capability to systems operating at 5 V supply

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm the exact package type and tape-and-reel specifications. Confirm the product status and availability directly with authorized distributors, as manufacturing statuses may change. Ensure compliance with the recommended operating conditions regarding supply voltage limits and ambient temperature ranges during integration.

Selection Notes

Select this component for applications requiring high-current drive capabilities on 3.3 V buses with direct compatibility to 5 V logic levels. The inclusion of bus hold inputs simplifies design by removing the requirement for external pull-up components. Consider the BiCMOS technology benefits for speed and drive strength compared to standard CMOS alternatives in mixed-voltage environments.

Part Context

This part belongs to the 74LVT logic family, designed specifically for low-voltage (3.3 V) applications. It serves as an inverting buffer/line driver variant within the broader octal buffer lineup. The 'DB' designation indicates the SO20 package version, distinct from other package options like TSSOP20 available within the same functional series.

Replacement Considerations

Consult the official datasheet revision history and cross-reference tables for verified substitute part numbers. Ensure any replacement maintains identical pinout configurations, electrical characteristics, and package dimensions to guarantee mechanical and functional compatibility.