Texas Instruments SN74AUC16240DGGR

Overview

SN74AUC16240DGGR from Texas Instruments is a 16-bit inverting 3-state buffer/driver optimized for 1.8-V operation with 3.6-V I/O tolerance, 2 ns max propagation delay at 1.8 V, ±8-mA output drive, and Ioff support for partial-power-down mode - used in high-density memory address and clock distribution systems.

For engineers reviewing the SN74AUC16240DGGR datasheet, SN74AUC16240DGGR pinout, SN74AUC16240DGGR application, or SN74AUC16240DGGR equivalent, key selection criteria include sub-2-V supply compatibility, rail-to-rail I/O tolerance, low-impedance 3-state control timing, and TSSOP-48 thermal performance for space-constrained logic interfacing.

Technical Context

This device implements four independent 4-bit inverting buffers, each with symmetrical active-low output-enable (OE) inputs and fully specified Ioff circuitry to block current backflow during power-down. It operates across 0.8 V–2.7 V VCC but is characterized for 1.65 V–1.95 V nominal use.

Logic-level translation is supported via 3.6-V tolerant I/Os while maintaining 1.8-V core logic, enabling mixed-mode signal interfacing between 1.8-V controllers and 3.3-V peripherals. Propagation delay (tpd) and enable/disable times are guaranteed down to 0.8 V, supporting ultra-low-voltage system partitioning.

Key Specifications

Pinout & Package

TSSOP-48 (DGG) package: 12.6 mm × 6.2 mm × 1.2 mm body, 0.5-mm pitch, JEDEC MO-153 compliant, lead-free NIPDAU finish, MSL Level-1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC16240ADGGR and 74AUP1G04GW,115, the SN74AUC16240DGGR uniquely combines 16-bit 3-state buffering, sub-2-V speed optimization, and 3.6-V I/O tolerance - making it irreplaceable for compact, mixed-voltage memory and clock fan-out where both performance and voltage flexibility are mandatory.

Availability

SN74AUC16240DGGR is available at Aetrix Electronics and suitable for memory subsystem design, clock distribution networks, hot-pluggable backplane interfaces, and ultra-low-power sensor aggregation requiring stable component supply across industrial temperature ranges.

Supply support for SN74AUC16240DGGR 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-speed interface and low-power logic families.

The SN74AUC16240DGGR belongs to TI's Widebus™ family - engineered specifically to increase logic density and timing margin in memory address drivers, clock trees, and bus transceivers operating at 1.8 V and below.

FAQ

What is the minimum operating voltage for the SN74AUC16240DGGR?

The SN74AUC16240DGGR is fully operational down to 0.8 V VCC, with guaranteed specifications including propagation delay and output drive validated at this level. This sub-1-V capability supports energy-harvesting and battery-critical applications where supply rails dip below conventional logic thresholds, and the SN74AUC16240DGGR maintains functional integrity without reset or brownout intervention.

Does the SN74AUC16240DGGR support hot-swap operation?

Yes, the SN74AUC16240DGGR supports hot-swap via its Ioff feature: when VCC = 0 V, the Ioff circuitry disables all outputs and limits leakage to ±10 µA, preventing damaging back-current flow from live I/O lines into the unpowered device. This behavior is tested per JESD 78 Class II and makes the SN74AUC16240DGGR suitable for modular backplane and field-replaceable unit designs.

Can the SN74AUC16240DGGR interface directly with 3.3-V logic?

Yes, the SN74AUC16240DGGR features 3.6-V tolerant I/Os, allowing direct connection to 3.3-V drivers and receivers without external level-shifting components. Input and output voltage ratings extend to 3.6 V regardless of VCC setting, enabling robust mixed-voltage signaling - a key advantage confirmed in the absolute maximum ratings and recommended operating conditions tables of the SN74AUC16240DGGR datasheet.

How is the 3-state output behavior controlled on the SN74AUC16240DGGR?

The SN74AUC16240DGGR uses four independent active-low output-enable inputs (1OE–4OE), one per 4-bit section. When an OE pin is driven low, its corresponding Y outputs reflect inverted A inputs; when high, those outputs enter high-impedance state. To ensure Hi-Z during power-up, TI recommends tying each OE to VCC through a pullup resistor sized per the driver's sink capability - a design requirement explicitly stated for reliable SN74AUC16240DGGR system initialization.

What package type and RoHS status does the SN74AUC16240DGGR use?

The SN74AUC16240DGGR is supplied in a RoHS-compliant, lead-free TSSOP-48 (DGG) package with NIPDAU surface finish and Moisture Sensitivity Level 1 (unlimited floor life at ≤30°C/60% RH). Its dimensions are 12.6 mm × 6.2 mm × 1.2 mm, and it ships in tape-and-reel format (2000 units per reel), meeting IPC-7351 land pattern guidelines for automated assembly of the SN74AUC16240DGGR.