Texas Instruments 8W244AMDGGREPG4

Overview

8W244AMDGGREPG4 from Texas Instruments is a radiation-hardened, high-reliability 16-bit noninverting buffer/driver with 3-state outputs, designed for 3.3-V ABT logic operation in extended temperature environments (–55°C to 125°C). It features four independent 4-bit sections, bus-hold inputs eliminating external resistors, Ioff support for hot insertion, and mixed-mode 5-V input tolerance with 3.3-V VCC - deployed in space-grade avionics data buses and military flight control interfaces.

For engineers reviewing the 8W244AMDGGREPG4 datasheet, 8W244AMDGGREPG4 pinout, 8W244AMDGGREPG4 application, or 8W244AMDGGREPG4 equivalent, key selection criteria include its –55°C to 125°C operating range, TSSOP-48 (DGG) package, 24-mA output drive capability, bus-hold functionality, and Ioff-enabled hot-swap compatibility in mission-critical embedded systems.

Technical Context

This device implements Advanced BiCMOS Technology (ABT) for low static power at 3.3 V while maintaining TTL-compatible input thresholds and 5-V tolerant inputs. Each of its four 4-bit sections operates independently with active-low 3-state enable (OE), supporting true (noninverting) signal buffering without polarity inversion.

The architecture integrates bus-hold circuitry on all data inputs (A1–A4 per section), latching floating inputs to valid logic states, and includes Ioff protection that disables outputs during power-down to prevent backflow current - critical for live-insertion in redundant power architectures.

Key Specifications

Pinout & Package

TSSOP-48 (DGG) package: 12.6 mm × 6.2 mm × 1.2 mm body, 0.5-mm pitch, lead-free NiPdAu finish, MSL Level-1 (260°C, unlimited reflow).

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVTH16244AQDGGREP and SN74LVC16244ADGGR, the 8W244AMDGGREPG4 uniquely delivers radiation-hardened assurance, –55°C startup capability, and full Ioff/bus-hold compliance - making it irreplaceable in flight-critical hardware where component pedigree and environmental resilience are mandatory.

Availability

8W244AMDGGREPG4 is available at Aetrix Electronics and suitable for avionics data bus interfaces, military flight control units, spacecraft power management systems, and radiation-hardened telemetry hubs requiring stable component supply across long-lifecycle programs.

Supply support for 8W244AMDGGREPG4 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 high-reliability components, with decades of heritage in space-qualified and military-grade IC design.

The SN74LVTH16244A-EP product line delivers radiation-tolerant, extended-temperature 3.3-V ABT buffers for mission-critical aerospace, defense, and nuclear instrumentation systems demanding zero-failure operation.

FAQ

What is the operating temperature range specified for the 8W244AMDGGREPG4?

The 8W244AMDGGREPG4 is qualified for continuous operation from –55°C to 125°C, verified per JEDEC HAST, temperature cycling, and autoclave testing. This extended range supports deployment in orbital thermal environments and high-temperature military enclosures where standard industrial-grade buffers would fail.

Does the 8W244AMDGGREPG4 support hot insertion, and how is it implemented?

Yes, the 8W244AMDGGREPG4 supports hot insertion via two integrated features: Ioff circuitry disables outputs when VCC = 0 V to prevent backflow current, and power-up 3-state forces outputs into high-impedance during power ramp-up. Both mechanisms are inherent to the 8W244AMDGGREPG4 silicon design and require no external circuitry.

Can the 8W244AMDGGREPG4 interface directly with 5-V logic devices?

Yes, the 8W244AMDGGREPG4 accepts input voltages up to 5.5 V while operating from a 3.3-V supply, enabling direct connection to 5-V TTL or CMOS outputs without level-shifting components. This mixed-mode capability is explicitly characterized and guaranteed across the full –55°C to 125°C range for the 8W244AMDGGREPG4.

What is the purpose of bus-hold circuitry in the 8W244AMDGGREPG4, and how does it affect system design?

The bus-hold circuitry in the 8W244AMDGGREPG4 actively maintains valid logic levels on unused or unterminated inputs, eliminating the need for external pullup or pulldown resistors. This reduces BOM cost, PCB area, and potential signal integrity issues - a key advantage in densely packed avionics modules where the 8W244AMDGGREPG4 is commonly deployed.

Is the 8W244AMDGGREPG4 pin-compatible with other variants in the SN74LVTH16244A-EP family?

Yes, the 8W244AMDGGREPG4 shares identical pinout, footprint, and function with all TSSOP-48 (DGG) variants of the SN74LVTH16244A-EP family, including CLVTH16244AQDGGREP and CLVTH16244AMDGGREP. Mechanical and electrical compatibility is confirmed in TI's Package Option Addendum, ensuring drop-in replacement within the same package variant.