Texas Instruments SN74LVT16240DLR

Overview

SN74LVT16240DLR from Texas Instruments is a 3.3-V ABT 16-bit inverting buffer/driver with 3-state outputs, designed for high-density bus interfacing in mixed-voltage systems. It supports 5-V input tolerance with 3.3-V VCC, delivers ±64 mA output drive, operates from –40°C to 85°C, and features Ioff and power-up 3-state for hot insertion in memory address and clock distribution applications.

For engineers reviewing the SN74LVT16240DLR datasheet, SN74LVT16240DLR pinout, SN74LVT16240DLR application, or SN74LVT16240DLR equivalent, key selection criteria include 3.3-V operation with 5-V tolerant inputs, symmetrical active-low OE control per 4-bit section, flow-through pinout for PCB layout optimization, and guaranteed hot-insertion support via Ioff and power-up 3-state logic.

Technical Context

The SN74LVT16240DLR implements four independent 4-bit inverting buffers, each with dedicated active-low output-enable (OE) inputs (1OE–4OE), enabling flexible partitioning as one 16-bit, two 8-bit, or four 4-bit drivers. Its Advanced BiCMOS Technology (ABT) ensures low static power dissipation while maintaining TTL-compatible output levels at 3.3-V supply.

It features distributed VCC and GND pins to suppress high-speed switching noise, flow-through architecture for minimized trace crossovers, and latch-up immunity exceeding 100 mA per JESD 78 Class II. The device enters high-impedance state when VCC is below 1.5 V and supports unregulated battery operation down to 2.7 V.

Key Specifications

Pinout & Package

SN74LVT16240DLR uses a 48-pin Shrink Small-Outline Package (SSOP-DL), 12.6 mm × 6.2 mm × 1.95 mm body, with 0.5-mm pitch and Q1 pin-1 orientation. Pin numbering follows standard SSOP top-view convention.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit inverting buffer applications.

Compared with SN74LVT16240DLR, SN74LVC16240ADGGR trades 5-V tolerance and output strength for lower static power and broader low-voltage operation, while 74ALVC16240PW matches voltage tolerance but sacrifices drive capability-making SN74LVT16240DLR optimal for demanding industrial bus loading and mixed-voltage reliability.

Availability

SN74LVT16240DLR is available at Aetrix Electronics and suitable for industrial control systems, telecommunications backplanes, and embedded memory subsystems requiring stable component supply, long-term lifecycle assurance, and verified hot-plug capability.

Supply support for SN74LVT16240DLR 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 specializing in analog, embedded processing, and logic solutions, with decades of innovation in high-reliability interface and bus technologies.

The SN74LVT16240DLR belongs to TI's Widebus™ family of advanced 3.3-V ABT logic devices, engineered specifically to enhance density and performance of memory address drivers, clock trees, and bus transceivers in industrial and communications infrastructure.

FAQ

What is the maximum operating voltage for SN74LVT16240DLR inputs?

The SN74LVT16240DLR supports input voltages up to 5.5 V regardless of VCC level, enabling direct interfacing with 5-V logic families without external level shifters. This 5-V tolerance is specified across the full operating temperature range and is validated per TI's electrical characteristics table under VI parameter.

Does SN74LVT16240DLR support hot insertion, and how is it implemented?

Yes, SN74LVT16240DLR supports hot insertion via two integrated features: Ioff circuitry that disables outputs and limits reverse current to ±100 µA when VCC = 0 V, and power-up 3-state logic that forces outputs into high-impedance during VCC ramp-up or ramp-down. These functions are inherent to the ABT process and require no external components.

What is the recommended pull-up resistor value for OE pins on SN74LVT16240DLR?

When VCC exceeds 1.5 V, OE pins must be actively driven or pulled up to ensure reliable high-impedance state. TI specifies a minimum pull-up resistor value determined by the driver's current-sinking capability; for SN74LVT16240DLR, a 10-kΩ resistor to VCC is typical and sufficient to maintain OE >2 V under worst-case leakage.

Can SN74LVT16240DLR be used as a non-inverting buffer?

No - SN74LVT16240DLR provides strictly inverting logic: a high input produces a low output and vice versa. Its internal architecture does not support non-inverting operation. For non-inverting 16-bit buffering, TI recommends SN74LVT16244DLR or SN74LVC16244ADGGR as functional alternatives.

What package type and dimensions does SN74LVT16240DLR use?

SN74LVT16240DLR uses the SSOP-DL package: 48-pin shrink small-outline with 0.5-mm pitch, 12.6 mm × 6.2 mm body size, and 1.95 mm max height. Pin 1 orientation is quadrant Q1, and the reel quantity is 1000 units per large tape-and-reel pack, per TI's packaging addendum.