Texas Instruments 74AVC16T245DGGRE4

Overview

74AVC16T245DGGRE4 from Texas Instruments is a 16-bit dual-supply noninverting bus transceiver with configurable level-shifting, tri-state outputs, and independent A/B port voltage rails (VCCA/VCCB = 1.2 V to 3.6 V). It enables bidirectional data translation between mismatched voltage domains-e.g., 1.8 V microcontroller to 3.3 V peripheral-with up to 380 Mbps throughput (1.8 V → 3.3 V), Ioff partial-power-down support, and VCC isolation.

For engineers reviewing the 74AVC16T245DGGRE4 datasheet, 74AVC16T245DGGRE4 pinout, 74AVC16T245DGGRE4 application, or 74AVC16T245DGGRE4 equivalent, this page delivers verified electrical specs, TSSOP-48 package details, real-world use cases in mixed-voltage embedded systems, and two validated alternative parts with functional and application-level distinctions.

Technical Context

The 74AVC16T245DGGRE4 implements a fully configurable dual-rail architecture: A-port I/Os and control inputs (DIR, OE) are referenced to VCCA; B-port I/Os are referenced to VCCB. Direction control is asynchronous-DIR high enables A→B transmission; DIR low enables B→A-while OE independently places both ports in high-impedance state.

VCC isolation ensures both ports enter high-impedance if either VCCA or VCCB is at GND. Ioff circuitry limits backflow current during partial power-down, and all I/Os tolerate up to 4.6 V regardless of supply rail, enabling robust mixed-voltage node interfacing without external protection.

Key Specifications

Pinout & Package

74AVC16T245DGGRE4 is packaged in a 48-pin TSSOP (DGG) with nominal body size 12.50 mm × 6.10 mm, lead pitch 0.5 mm, and exposed pad not present. Pin functions are validated per TI SCES551F Rev. MARCH 2024.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar bus transceiver applications.

Compared with SN74AVCH16T245DGGR, 74AVC16T245DGGRE4 offers lower static power and simpler control but requires external bus management; versus TXB0108PWR, it delivers double bandwidth and deterministic direction control at the cost of one extra control signal per 8-bit lane.

Availability

74AVC16T245DGGRE4 is available at Aetrix Electronics and suitable for industrial automation, automotive ADAS subsystems, and medical imaging equipment requiring stable component supply across extended product lifecycles.

Supply support for 74AVC16T245DGGRE4 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 company specializing in analog and embedded processing solutions, with leadership in precision analog, power management, and high-speed interface ICs.

The SN74AVC16T245 product line targets mixed-voltage system integration in space-constrained embedded platforms-designed to simplify voltage domain bridging in FPGA, MPU, and ASIC interconnects without sacrificing speed or reliability.

FAQ

What is the maximum supported data rate for 74AVC16T245DGGRE4 when translating from 1.8 V to 3.3 V?

The 74AVC16T245DGGRE4 supports up to 380 Mbps in the 1.8 V → 3.3 V level-shifting configuration, as specified in Section 1 Features of the TI SCES551F datasheet. This performance is achievable under recommended operating conditions (VCCA = 1.8 V ± 0.15 V, VCCB = 3.3 V ± 0.3 V, TA = –40 °C to +85 °C) with proper PCB layout and load capacitance ≤15 pF.

Does 74AVC16T245DGGRE4 require external pull-up resistors on DIR and OE pins?

No-74AVC16T245DGGRE4 does not require external pull-up resistors on DIR or OE. Its control inputs are CMOS-compatible and referenced to VCCA; OE should be tied to VCCA through a pull-up resistor only if guaranteed high-impedance state is needed during power-up/power-down sequences, per Section 4 Description (continued) of the datasheet. Default operation uses active-low OE driven directly by logic.

Can 74AVC16T245DGGRE4 operate with VCCA = 1.2 V and VCCB = 3.3 V simultaneously?

Yes-74AVC16T245DGGRE4 is fully specified for simultaneous operation at VCCA = 1.2 V and VCCB = 3.3 V. Section 6.3 Recommended Operating Conditions confirms both rails may be set anywhere from 1.2 V to 3.6 V independently. At this combination, maximum data rate is 100 Mbps (Section 1 Features), and VOH/VOL remain within valid logic thresholds per electrical characteristics tables.

How does the VCC isolation feature function in 74AVC16T245DGGRE4?

The VCC isolation feature in 74AVC16T245DGGRE4 forces both A and B ports into high-impedance state whenever either VCCA or VCCB is at GND. This behavior is hardware-enforced and does not depend on DIR or OE states. It prevents bus contention and false logic levels during power sequencing failures or partial system resets, as documented in Sections 4 and 8.3.3 of the datasheet.

Is 74AVC16T245DGGRE4 compatible with 5 V tolerant systems?

74AVC16T245DGGRE4 is not 5 V tolerant on its power supplies (VCCA/VCCB max = 3.6 V), but all I/O pins-including A and B ports-are overvoltage-tolerant up to 4.6 V regardless of supply voltage. This allows safe connection to 3.3 V systems with transient overshoot or test equipment operating at ≤4.6 V, but sustained 5 V signaling requires external level-shifting or clamping.