Texas Instruments SN74LVTH162245DL

Overview

SN74LVTH162245DL from Texas Instruments is a 3.3-V ABT 16-bit dual-octal noninverting bus transceiver with 3-state outputs, designed for mixed-mode signal operation (5-V I/O with 3.3-V V_CC), supporting hot insertion and bus-hold functionality. It features 48-pin SSOP (DL) packaging, 22-Ω series output resistors on A-port pins, and operates across –40°C to 85°C.

For engineers reviewing the SN74LVTH162245DL datasheet, SN74LVTH162245DL pinout, SN74LVTH162245DL application, or SN74LVTH162245DL equivalent, this device serves as a level-shifting bidirectional data interface in backplane, memory expansion, and FPGA-to-ASIC interconnect systems requiring TTL-compatible drive into 3.3-V domains.

Technical Context

The SN74LVTH162245DL implements two independent 8-bit transceiver sections, each controlled by dedicated DIR and OE inputs. Its ABT (Advanced BiCMOS Technology) architecture integrates bus-hold circuitry on all A- and B-port inputs, eliminating external pullup/pulldown resistors, and supports unregulated battery operation down to 2.7 V.

Direction control is asynchronous and noninverting: when DIR = LOW, data flows A→B; when DIR = HIGH, data flows B→A. Output-enable logic places both ports in high-impedance state when OE = HIGH, with I_off and power-up 3-state ensuring safe hot-insertion behavior during power sequencing.

Key Specifications

Pinout & Package

SN74LVTH162245DL uses a 48-pin SSOP (Shrink Small Outline Package) with 0.5-mm pitch, 12.6 mm × 6.2 mm body size, and 1.2 mm max height. Pin 1 is marked by a beveled corner; package conforms to 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 SN74LVTH162245DL, SN74LVC16245ADLR lacks 5-V I/O tolerance and bus-hold, increasing external component count; SN74ALVCH162245GRDR offers faster timing but sacrifices mixed-voltage interoperability - making SN74LVTH162245DL uniquely suited for brownfield system integration.

Availability

SN74LVTH162245DL is available at Aetrix Electronics and suitable for industrial backplane interfaces, FPGA memory expansion, hot-swappable module isolation, and automotive diagnostic gateways requiring stable component supply and long-term lifecycle assurance.

Supply support for SN74LVTH162245DL 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 over 50 years of innovation in interface and bus technology.

The SN74LVTH162245DL belongs to TI's Widebus™ family of ABT transceivers, engineered specifically for reliable voltage-level bridging and noise-immune data transfer in mixed-signal industrial and automotive systems.

FAQ

What is the maximum operating temperature range for the SN74LVTH162245DL?

The SN74LVTH162245DL is rated for operation from –40°C to +85°C ambient temperature, as confirmed in the Recommended Operating Conditions table of the official datasheet. This industrial temperature grade ensures reliability in factory automation, motor control, and outdoor communications equipment where thermal cycling occurs.

Does the SN74LVTH162245DL support true 5-V input tolerance?

Yes, the SN74LVTH162245DL supports input voltages up to 5.5 V regardless of V_CC level, enabling direct connection to 5-V TTL/CMOS logic without external clamping. This capability is explicitly specified in the Absolute Maximum Ratings and Electrical Characteristics sections of the TI datasheet SCBS260Q.

How does the bus-hold feature function on the SN74LVTH162245DL?

The SN74LVTH162245DL includes active bus-hold circuitry on all 32 data I/O pins, which applies ±750 µA dynamic hold current to maintain the last-valid logic state when inputs float. This eliminates the need for external pullup or pulldown resistors and is fully characterized across temperature and voltage in the Electrical Characteristics table.

Can the SN74LVTH162245DL be used in hot-swap applications?

Yes, the SN74LVTH162245DL incorporates both I_off and power-up 3-state circuitry, ensuring outputs remain in high-impedance during power-up/down and preventing damaging backdrive current when inserted into a live backplane. This is validated per JESD78 latch-up and JESD22 ESD standards cited in the datasheet.

What package type and dimensions does the SN74LVTH162245DL use?

The SN74LVTH162245DL uses a 48-pin SSOP (DL) package measuring 12.6 mm × 6.2 mm with 0.5-mm lead pitch and 1.2 mm max height. Mechanical drawings confirm compliance with JEDEC MO-153, and thermal data specifies θ_JA = 63°C/W on standard 2-layer FR-4 PCBs.