Texas Instruments SN74LVCZ240ADGVR

Overview

SN74LVCZ240ADGVR from Texas Instruments is an octal buffer/driver with 3-state outputs, designed for memory address and clock bus driving in 2.7-V to 3.6-V systems. It features dual 4-bit channels, independent output-enable (OE) controls, 5.5-V-tolerant inputs, 6.5-ns max propagation delay at 3.3 V, and Ioff support for hot insertion in mixed-voltage environments.

For engineers reviewing the SN74LVCZ240ADGVR datasheet, SN74LVCZ240ADGVR pinout, SN74LVCZ240ADGVR application, or SN74LVCZ240ADGVR equivalent, key selection criteria include 3.3-V supply compatibility, 5-V input tolerance, high-density bus buffering capability, and hot-swap readiness in industrial backplane and memory subsystem designs.

Technical Context

The SN74LVCZ240ADGVR implements two independent 4-bit noninverting buffers, each with dedicated OE control (1OE and 2OE), enabling selective channel enablement without affecting the other. Its logic diagram confirms positive-logic operation: low OE enables data flow from A inputs to Y outputs; high OE forces outputs into high-impedance state.

It supports mixed-mode signal operation via 5.5-V-tolerant inputs while powered from 2.7–3.6 V, allowing direct interfacing between 3.3-V logic and legacy 5-V peripherals. Power-up 3-state and Ioff circuitry ensure safe hot insertion by disabling outputs during power transitions and blocking reverse current when unpowered.

Key Specifications

Pinout & Package

SN74LVCZ240ADGVR is packaged in a 20-pin TVSOP (Thin Very Small Outline Package) with 0.5-mm pitch, 4.4-mm width, and 2.65-mm max height - optimized for high-density PCB layouts in space-constrained embedded modules.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar octal buffer applications.

Compared with SN74LVC240APWR and 74LVCH240PW, the SN74LVCZ240ADGVR uniquely combines 5.5-V input tolerance, certified low ground bounce, and industrial-grade ESD/latch-up performance - making it the preferred choice for robust mixed-voltage bus interfacing where signal integrity and hot-swap reliability are non-negotiable.

Availability

SN74LVCZ240ADGVR is available at Aetrix Electronics and suitable for industrial backplane interfaces, FPGA I/O expansion, memory subsystem buffering, and legacy system integration requiring stable component supply and long-term lifecycle support.

Supply support for SN74LVCZ240ADGVR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and communications markets.

The SN74LVCZ240ADGVR belongs to TI's LVCZ logic family, engineered specifically to improve noise immunity, timing density, and mixed-voltage interoperability in high-reliability memory and bus interface applications.

FAQ

What is the supply voltage range for SN74LVCZ240ADGVR?

The SN74LVCZ240ADGVR operates from 2.7 V to 3.6 V. Operation outside this range may cause functional failure or permanent damage. The device enters a guaranteed high-impedance state when VCC drops below 1.5 V during power-down, but OE should be pulled up to VCC for full 3-state assurance above that threshold. This specification is verified across –40°C to 85°C ambient temperature.

Does SN74LVCZ240ADGVR support 5-V input signals?

Yes, SN74LVCZ240ADGVR accepts input voltages up to 5.5 V regardless of VCC level - a key feature enabling direct interfacing with 5-V TTL or CMOS devices without external level shifters. This capability is explicitly guaranteed in the Absolute Maximum Ratings and Recommended Operating Conditions tables of the official datasheet SCES273H.

What is the maximum propagation delay of SN74LVCZ240ADGVR?

The maximum propagation delay (tpd) of SN74LVCZ240ADGVR is 6.5 ns at VCC = 3.3 V and TA = 25°C, measured from input to output under standard load conditions (CL = 30 pF). This value increases slightly at lower VCC (e.g., 7.5 ns at 2.7 V), and all timing parameters are fully characterized across the –40°C to 85°C operating range.

How does SN74LVCZ240ADGVR support hot insertion?

SN74LVCZ240ADGVR supports hot insertion through two integrated features: Ioff circuitry disables outputs when VCC = 0, preventing reverse current flow from live bus lines into the unpowered device; and power-up 3-state holds outputs in high-impedance until VCC exceeds 1.5 V. Both mechanisms are tested per JEDEC standards and documented in the TI datasheet SCES273H.

What package type is used for SN74LVCZ240ADGVR?

SN74LVCZ240ADGVR uses a 20-pin TVSOP (Thin Very Small Outline Package) with 0.5-mm lead pitch, 4.4-mm body width, and 2.65-mm maximum height. This package is RoHS-compliant, green (low-halogen), and rated MSL Level-1 for unlimited floor life - ideal for automated SMT assembly in high-density industrial PCBs.