Texas Instruments SN74LVT162245AGQLR

Overview

SN74LVT162245AGQLR 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 two 8-bit buses in mixed-voltage systems. It supports 5-V input/output signaling with 3.3-V VCC, delivers ±12 mA A-port and ±64 mA B-port drive, and features integrated 22-Ω series resistors on A-port outputs to suppress overshoot/undershoot - used in industrial backplane interfaces and FPGA-to-ASIC interconnects.

For engineers reviewing the SN74LVT162245AGQLR datasheet, SN74LVT162245AGQLR pinout, SN74LVT162245AGQLR application, or SN74LVT162245AGQLR equivalent, key selection criteria include its 56-ball VFBGA (GQL) package, hot-insertion support via Ioff and power-up 3-state, distributed VCC/GND for noise reduction, flow-through pin architecture, and guaranteed operation down to 2.7 V VCC.

Technical Context

The SN74LVT162245AGQLR implements dual independent 8-bit transceiver sections, each controlled by dedicated DIR (direction) and OE (output-enable) inputs. Its ABT logic family uses advanced bipolar-CMOS process to achieve TTL-compatible thresholds at 3.3-V supply while tolerating 5-V signals on both A and B ports without level shifters.

Direction control is asynchronous: when OE is low and DIR = L, B-port data flows to A-port; when OE is low and DIR = H, A-port data flows to B-port; when OE is high, both ports enter high-impedance isolation. Input circuits remain active at all times, requiring defined logic levels on all I/Os to prevent excess ICCZ.

Key Specifications

Pinout & Package

SN74LVT162245AGQLR is housed in a 56-ball Very Thin Fine-Pitch Ball Grid Array (VFBGA) package designated GQL, measuring 7.0 mm × 4.5 mm × 0.9 mm with 0.5-mm ball pitch. The package features distributed VCC and GND balls to minimize simultaneous switching noise and supports JEDEC-standard reflow profiles (MSL Level-3).

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC162245ADLR, SN74LVT162245AGQLR provides stronger drive and 5-V tolerance essential for legacy interoperability; compared with SN74ALVC162245GRDR, it trades minor speed reduction for built-in A-port termination and superior noise suppression in noisy industrial environments.

Availability

SN74LVT162245AGQLR is available at Aetrix Electronics and suitable for industrial backplane interconnects, FPGA-to-ASIC bridges, automotive diagnostic interfaces, and telecom line card buffering requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for SN74LVT162245AGQLR 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 expertise in high-reliability interface ICs for industrial and automotive markets.

The SN74LVT162245AGQLR belongs to TI's Widebus™ ABT logic family, engineered specifically for robust, low-noise bidirectional bus interfacing in mixed-voltage systems where signal integrity, hot-swap safety, and layout efficiency are critical.

FAQ

What is the operating temperature range for SN74LVT162245AGQLR?

The SN74LVT162245AGQLR is rated for operation from –40°C to +85°C, matching the commercial/industrial grade specification for the GQL package variant. This range supports deployment in factory automation controllers, outdoor telecom equipment, and vehicle service tools without derating. The device maintains full electrical performance across this span, including guaranteed IOL/IOH drive and propagation delay specs.

Does SN74LVT162245AGQLR support hot-plug insertion?

Yes, SN74LVT162245AGQLR supports hot insertion via two complementary features: Ioff circuitry disables outputs when VCC = 0, preventing backflow current from live buses into a powered-down device; and power-up 3-state ensures outputs remain in high-impedance during VCC ramp-up. These functions are fully characterized per JESD78 Class II latch-up and JESD22 ESD standards, making SN74LVT162245AGQLR suitable for modular backplane systems requiring field-replaceable cards.

What is the purpose of the 22-Ω series resistors on the A-port outputs of SN74LVT162245AGQLR?

The 22-Ω series resistors integrated on all A-port outputs of SN74LVT162245AGQLR serve to dampen signal reflections and suppress overshoot/undershoot on PCB traces, particularly in point-to-point or short-bus configurations. They eliminate the need for external termination resistors, saving board space and BOM cost. These resistors are optimized for typical 50-Ω trace impedances and operate transparently - they do not affect logic thresholds or DC drive capability, as confirmed by VOL/VOH specs measured at the die bond pad.

Can SN74LVT162245AGQLR interface directly with 5-V logic devices?

Yes, SN74LVT162245AGQLR can interface directly with 5-V logic devices: its A- and B-port inputs tolerate up to 5.5 V regardless of VCC, and its B-port outputs drive 5-V logic levels with guaranteed VOH ≥ 2.0 V and VOL ≤ 0.55 V at IOL = 64 mA. This 5-V tolerance is inherent to the ABT process and requires no external components - enabling seamless integration with legacy TTL, LVTTL, and 5-V CMOS systems while operating from a 3.3-V supply.

What package type and dimensions does SN74LVT162245AGQLR use?

SN74LVT162245AGQLR uses a 56-ball Very Thin Fine-Pitch Ball Grid Array (VFBGA) package designated GQL, with mechanical dimensions of 7.0 mm × 4.5 mm × 0.9 mm and 0.5-mm ball pitch. It complies with JEDEC MO-220 standards and is rated MSL Level-3 (floor life 168 hours at 30°C/60% RH). The package features perimeter and array-distributed VCC/GND balls to minimize inductance and improve high-speed noise performance.