Texas Instruments SN74ALVTH162244DL

Overview

SN74ALVTH162244DL from Texas Instruments is a 16-bit noninverting buffer/driver with 3-state outputs, designed for 2.5-V/3.3-V operation and mixed-mode (5-V input-tolerant) interfacing. It features bus-hold circuitry on all data inputs, integrated 30-Ω output series resistors, and auto 3-state functionality that disables outputs when V_OUT exceeds V_CC + 0.5 V. It supports high-speed data routing in backplane, memory expansion, and bus isolation applications.

For engineers reviewing the SN74ALVTH162244DL datasheet, SN74ALVTH162244DL pinout, SN74ALVTH162244DL application, or SN74ALVTH162244DL equivalent, key selection criteria include its 2.3–3.6-V supply range, ±12-mA drive strength, 3.3-ns max propagation delay at 3.3 V/50 pF, bus-hold input stabilization, and live-insertion support via power-off output disable.

Technical Context

The SN74ALVTH162244DL implements four independent 4-bit buffer sections, each with symmetrical active-low output-enable (OE) control and true (noninverting) logic. Its Advanced BiCMOS Technology (ABT) delivers low static power dissipation while maintaining TTL-compatible input thresholds and 5-V tolerant inputs across the full 2.3–3.6-V V_CC range.

Each output incorporates an internal 30-Ω series resistor to suppress overshoot/undershoot without external termination, and the device enters high-impedance during power-up/down when V_CC ≤ 1.2 V-enabling safe hot-swap operation. Bus-hold circuitry actively maintains valid logic levels on floating inputs, eliminating need for external pullup/pulldown resistors.

Key Specifications

Pinout & Package

SN74ALVTH162244DL uses a 48-pin Plastic Shrink Small-Outline Package (SSOP, DL), 12.6 mm × 6.2 mm × 1.2 mm body, with 0.5-mm lead pitch and gull-wing leads. Pin 1 identifier located at top-left corner of package marking area.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit 3-state buffer applications.

Compared with SN74LVC162244ADGGR and SN74AVC162244DGGR, the SN74ALVTH162244DL uniquely combines 5-V input tolerance, bus-hold, auto 3-state, and live-insertion capability - making it the only option among the three qualified for mixed-voltage hot-swap backplane designs without supplemental circuitry.

Availability

SN74ALVTH162244DL is available at Aetrix Electronics and suitable for backplane routing, memory expansion, hot-pluggable module interfaces, and legacy bus isolation requiring stable component supply and long-term industrial lifecycle support.

Supply support for SN74ALVTH162244DL 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 for industrial, automotive, and communications markets.

The ALVTH family was engineered for robust mixed-signal interfacing in high-reliability systems - delivering 5-V tolerant inputs, bus-hold stabilization, and hot-swap readiness in low-voltage 2.5-V/3.3-V environments.

FAQ

What is the operating temperature range for the SN74ALVTH162244DL?

The SN74ALVTH162244DL is characterized for operation from –40°C to +85°C. This industrial-grade temperature specification ensures reliable performance in demanding embedded and infrastructure applications, including telecommunications equipment, programmable logic controllers, and industrial computing platforms where ambient thermal conditions exceed commercial limits.

Does the SN74ALVTH162244DL require external pullup or pulldown resistors on its inputs?

No, the SN74ALVTH162244DL does not require external pullup or pulldown resistors on its data inputs. It integrates active bus-hold circuitry on all 16 A-inputs, which maintains valid logic states (high or low) on floating or unused inputs - eliminating risk of metastability and reducing BOM count and PCB space.

Can the SN74ALVTH162244DL be used in a 5-V system environment?

Yes, the SN74ALVTH162244DL supports mixed-mode operation: its inputs tolerate up to 5.5 V regardless of V_CC (2.3–3.6 V), enabling direct connection to 5-V TTL or CMOS outputs. Outputs swing rail-to-rail within the V_CC range, so interfacing to 5-V receivers requires external level-shifting or relies on receiver input threshold compatibility.

What is the maximum capacitive load the SN74ALVTH162244DL can drive while maintaining specified timing?

The SN74ALVTH162244DL's switching characteristics are specified with C_L = 50 pF at V_CC = 3.3 V. While it can drive heavier loads, propagation delay increases linearly with capacitance. For designs exceeding 50 pF per output, verify timing margins using the device's typical output impedance (~30 Ω) and target rise/fall times - or add series damping if signal integrity degrades.

Is the SN74ALVTH162244DL pin-compatible with other 48-pin 16-bit buffers from Texas Instruments?

The SN74ALVTH162244DL shares the same 48-pin SSOP (DL) package outline and functional pinout with SN74ALVTH162244GR (TSSOP) and SN74ALVTH162244VR (TVSOP) variants, but is not pin-compatible with unrelated families like LVC or AVC due to differing OE polarity conventions, bus-hold presence, and auto 3-state behavior - always validate against the specific logic diagram and truth table.