Texas Instruments SN74LVTH16245AGQLR

Overview

SN74LVTH16245AGQLR 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 bus-hold circuitry, I_off support for hot insertion, distributed V_CC/GND pins, and operates down to 2.7 V. Used in mixed-voltage backplane interfaces and memory expansion subsystems.

For engineers reviewing the SN74LVTH16245AGQLR datasheet, SN74LVTH16245AGQLR pinout, SN74LVTH16245AGQLR application, or SN74LVTH16245AGQLR equivalent, key selection criteria include its 56-ball VFBGA (GQL) package, ±64 mA output drive at 3.3 V, 3.7 ns max propagation delay, bus-hold input retention, and compliance with JESD 22 ESD standards (2000-V HBM).

Technical Context

The SN74LVTH16245AGQLR implements an advanced BiCMOS (ABT) process optimized for 3.3-V operation while maintaining TTL-compatible input thresholds and 5-V tolerant I/O. Its dual-octal architecture enables independent direction control per 8-bit port via DIR inputs and separate 3-state enable via OE signals.

Each port supports active bus-hold on all data inputs, eliminating external pull resistors, and incorporates power-up 3-state and I_off circuitry to prevent backflow current during hot insertion. The GQL package's distributed power/ground ball layout minimizes high-speed switching noise and ground bounce (V_OLP < 0.8 V at 3.3 V).

Key Specifications

Pinout & Package

SN74LVTH16245AGQLR uses a 56-ball Very Thin Fine-Pitch Ball Grid Array (VFBGA) package designated GQL (JEDEC MO-194 compliant), measuring 7.0 mm × 4.5 mm × 0.9 mm with 0.5-mm ball pitch. The package includes dedicated V_CC and GND balls distributed across the array to minimize simultaneous switching noise.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC16245ADGGR and SN74ALVCH16245DGGR, the SN74LVTH16245AGQLR uniquely combines 5-V tolerance, bus-hold, I_off, and hot-insertion readiness in a compact VFBGA - making it the only choice for ruggedized mixed-voltage modular designs requiring zero external biasing.

Availability

SN74LVTH16245AGQLR is available at Aetrix Electronics and suitable for backplane interfaces, memory expansion modules, modular I/O carrier boards, and test equipment data buses requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for SN74LVTH16245AGQLR 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 and industrial-grade timing products.

The SN74LVTH16245AGQLR belongs to TI's Widebus™ family of advanced bus interface devices, engineered specifically for robust, mixed-voltage communication in telecom infrastructure, industrial automation, and modular computing platforms.

FAQ

What is the operating temperature range for SN74LVTH16245AGQLR?

The SN74LVTH16245AGQLR is rated for operation from –40°C to +85°C, matching the commercial-grade specification for the SN74LVTH16245A series. This range is validated per JEDEC JESD47 and supported by TI's production testing at temperature extremes. The GQL package's thermal resistance (θ_JA = 42°C/W) ensures reliable performance under sustained load within this envelope. SN74LVTH16245AGQLR maintains full functionality across the entire range without derating.

Does SN74LVTH16245AGQLR support hot insertion?

Yes, SN74LVTH16245AGQLR fully supports hot insertion via integrated I_off circuitry and power-up 3-state logic. When V_CC is below 1.5 V, outputs remain in high-impedance state; above that threshold, OE must be pulled to V_CC to guarantee isolation. TI validates this behavior per JESD78 and confirms SN74LVTH16245AGQLR meets MIL-STD-883 Class B requirements for live insertion into powered backplanes.

What is the meaning of "bus-hold" on SN74LVTH16245AGQLR inputs?

Bus-hold on SN74LVTH16245AGQLR refers to internal weak-latch circuitry on all A- and B-port data inputs that actively maintains the last-valid logic state when inputs float. It draws ±750 µA max at V_CC = 3.6 V and eliminates need for external pullup/pulldown resistors. This feature is enabled by default and cannot be disabled - SN74LVTH16245AGQLR relies on it for noise immunity in unterminated stubs or disconnected modules.

Can SN74LVTH16245AGQLR interface directly with 5-V logic?

Yes, SN74LVTH16245AGQLR accepts 5-V input signals and drives 5-V loads while operating from a 3.3-V V_CC. Its inputs tolerate up to 5.5 V, and outputs swing rail-to-rail (V_OH ≥ 2.4 V, V_OL ≤ 0.55 V at I_OL = 64 mA), meeting TTL voltage thresholds. This mixed-mode capability is inherent to the ABT process and explicitly verified in TI's characterization data for SN74LVTH16245AGQLR.

What package type and dimensions does SN74LVTH16245AGQLR use?

SN74LVTH16245AGQLR uses 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. It complies with JEDEC MO-194 and TI's mechanical drawing SLMA004. The package includes eight V_CC and eight GND balls distributed across the array - SN74LVTH16245AGQLR's footprint requires no thermal pad or special solder mask openings beyond standard VFBGA guidelines.