Texas Instruments SN74LVT16245BGRDR

Overview

SN74LVT16245BGRDR from Texas Instruments is a 3.3-V ABT 16-bit dual-octal noninverting bus transceiver with 3-state outputs, designed for asynchronous bidirectional data transfer between 3.3-V and 5-V systems. It features Ioff and power-up 3-state support for hot insertion, distributed VCC/GND pins to minimize switching noise, and operates across –40°C to 85°C with supply voltage from 2.7 V to 3.6 V.

For engineers reviewing the SN74LVT16245BGRDR datasheet, SN74LVT16245BGRDR pinout, SN74LVT16245BGRDR application, or SN74LVT16245BGRDR equivalent, this device is selected for mixed-voltage bus interfacing in industrial control backplanes, FPGA-to-ASIC communication links, and hot-pluggable module interconnects where level translation, output isolation, and low ground bounce (<0.8 V) are critical.

Technical Context

The SN74LVT16245BGRDR implements two independent 8-bit transceiver sections (A↔B), each controlled by dedicated DIR (direction) and OE (output enable) inputs. Its ABT BiCMOS architecture enables TTL-compatible 5-V input tolerance while operating at 3.3-V VCC, supporting unregulated battery operation down to 2.7 V.

Each port maintains active input circuitry regardless of OE state, requiring external logic-level biasing to prevent excess ICC/ICCZ. The device enters high-impedance during power-up/down when VCC is below 1.5 V, and uses integrated Ioff and power-up 3-state circuitry to block backflow current and avoid bus conflicts during hot insertion.

Key Specifications

Pinout & Package

VFBGA-54 (GRD package), 5.5 mm × 5.5 mm, 0.5-mm pitch, bottom-side ball layout with 4 corner fiducials and pin-1 indicator in quadrant Q1 per JEDEC MO-153.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit bus transceiver applications.

Compared with SN74LVC16245ADGGR and SN74ALVC16245DGGR, the SN74LVT16245BGRDR uniquely combines 5-V input tolerance, 64-mA drive, Ioff protection, and hot-insertion readiness - making it the only option among the three qualified for mixed-voltage, high-reliability, hot-pluggable industrial backplanes.

Availability

SN74LVT16245BGRDR is available at Aetrix Electronics and suitable for industrial backplane interfacing, FPGA-to-ASIC communication, hot-pluggable module interfaces, and automated test equipment bus extension requiring stable component supply and long-term lifecycle continuity.

Supply support for SN74LVT16245BGRDR 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 and embedded processing solutions, with core expertise in high-reliability interface, power, and signal-chain ICs.

The SN74LVT16245BGRDR belongs to TI's Widebus™ family of advanced bus interface devices, engineered specifically for robust, mixed-voltage, high-speed digital interconnect in industrial automation, communications infrastructure, and test equipment.

FAQ

What is the recommended operating voltage range for SN74LVT16245BGRDR?

The SN74LVT16245BGRDR is specified to operate across a VCC range of 2.7 V to 3.6 V. This allows reliable function under unregulated battery conditions down to 2.7 V while maintaining full AC and DC performance up to 3.6 V. Operation outside this range may result in undefined behavior or damage, especially beyond the absolute maximum rating of –0.5 V to 4.6 V.

Does SN74LVT16245BGRDR support 5-V input signals when powered at 3.3 V?

Yes, SN74LVT16245BGRDR supports 5-V-tolerant inputs - its VI rating extends to 5.5 V regardless of VCC level. This enables direct connection to 5-V logic sources without external level shifters, a key feature distinguishing it from LVC- or ALVC-family transceivers. Input clamp current remains within safe limits (±50 mA) per JESD 22 specifications.

How does SN74LVT16245BGRDR handle hot insertion?

SN74LVT16245BGRDR incorporates both Ioff and power-up 3-state circuitry. When VCC = 0 V, Ioff disables all outputs to prevent backflow current. During power-up or power-down (VCC between 0–1.5 V), outputs remain in high-impedance state. These features are fully characterized per JESD 78 and JESD 22, enabling safe hot insertion into live 5-V backplanes without bus contention or latch-up risk.

What is the thermal resistance (θJA) of the SN74LVT16245BGRDR in its GRD package?

The SN74LVT16245BGRDR in the 54-ball VFBGA (GRD) package has a junction-to-ambient thermal resistance (θJA) of 36 °C/W, measured per JESD 51-7 on a standard 4-layer JEDEC test board. This value reflects the benefit of distributed VCC/GND balls and compact footprint, enabling sustained operation at full drive strength (64 mA per output) without thermal derating in typical industrial PCB layouts.

Can SN74LVT16245BGRDR be used in place of SN74LVC16245ADGGR?

No - SN74LVT16245BGRDR is not a drop-in replacement for SN74LVC16245ADGGR. While both are 16-bit transceivers, SN74LVT16245BGRDR provides 5-V input tolerance and 64-mA drive, whereas SN74LVC16245ADGGR is limited to 24-mA drive and lacks 5-V tolerance. Substituting requires verification of voltage domain compatibility, timing margins, and hot-swap requirements - SN74LVT16245BGRDR is intended for more demanding mixed-voltage applications.