Nexperia USA Inc. 74AXP8T245PWJ

Overview

74AXP8T245PWJ from Nexperia is an 8-bit dual-supply bidirectional translating transceiver with 3-state outputs, enabling level translation between independent voltage domains (0.9 V to 5.5 V on both VCC(A) and VCC(B)). It supports A↔B data flow controlled by DIR, isolation via active-low OE, and IOFF-enabled partial power-down. Used in mixed-voltage SoC interconnects, FPGA I/O bridging, and industrial controller backplanes.

For engineers reviewing the 74AXP8T245PWJ datasheet, 74AXP8T245PWJ pinout, 74AXP8T245PWJ application, or 74AXP8T245PWJ equivalent, key selection criteria include guaranteed glitch-free supply transitions (20 mV/µs to 5.5 V/s), ±2 μA max ICC at 25 °C, 1.5 pF typical input capacitance, and -40 °C to +125 °C operation with JEDEC-compliant voltage thresholds.

Technical Context

This device implements a patented dual-rail translation architecture where An, DIR, and OE are referenced to VCC(A), while Bn pins reference VCC(B); no power sequencing is required. The IOFF circuit actively disables outputs during power-down, blocking backflow current when either supply is at GND.

Propagation delay varies with supply pairing: tpd = 12 ns (5.0 V ↔ 5.0 V), 15 ns (1.8 V ↔ 1.8 V), and up to 34 ns (0.9 V ↔ 0.9 V). Enable/disable timing is asymmetric-ten(OE→Bn) is as low as 3.8 ns at 5.0 V/5.0 V, while tdis(OE→An) reaches 49 ns under same conditions.

Key Specifications

Pinout & Package

TSSOP24 package (SOT355-1), 4.4 mm body width, 0.65 mm pitch, 24-lead plastic thin shrink small outline.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar bidirectional level translation applications.

Compared with SN74AVCH8T245RHLR and TXB0108PWR, the 74AXP8T245PWJ uniquely delivers 0.9–5.5 V dual-rail flexibility, guaranteed glitch suppression during supply transients, and true IOFF protection - making it the only option qualified for mixed-voltage automotive and industrial real-time control.

Availability

74AXP8T245PWJ is available at Aetrix Electronics and suitable for industrial PLC backplanes, automotive ADAS camera links, FPGA-to-MCU interfaces, and server memory subsystems requiring stable component supply across extended temperature and voltage ranges.

Supply support for 74AXP8T245PWJ 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

Nexperia is a global semiconductor expert focused on essential efficiency technologies, delivering high-performance logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74AXP series targets ultra-low-power, wide-voltage bidirectional translation in space- and energy-constrained embedded systems - designed specifically for mixed-domain interconnects in harsh-environment applications.

FAQ

What is the maximum allowable voltage difference between VCC(A) and VCC(B)?

No maximum differential is specified - the device supports any combination within 0.9 V to 5.5 V per rail, including 0.9 V/5.5 V and 5.5 V/0.9 V. Absolute maximum ratings allow VCC(A) and VCC(B) to operate independently up to +6.5 V, but functional operation is guaranteed only within the 0.9–5.5 V range per supply.

Does 74AXP8T245PWJ require external pull-up or pull-down resistors on DIR or OE?

No external biasing is required. DIR and OE have CMOS-compatible input thresholds referenced to VCC(A), and internal circuitry ensures valid logic levels across the full 0.9–5.5 V VCC(A) range. External resistors may be used only for fail-safe default states in safety-critical systems.

Can the device translate between 5.0 V and 1.2 V while maintaining timing integrity?

Yes - propagation delay is 14.5 ns (max) at -40 °C to +85 °C for 5.0 V ↔ 1.2 V operation, and 15 ns (max) across -40 °C to +125 °C. This meets setup/hold timing for 30+ MHz parallel buses and is validated in Table 12 and Table 13 of the datasheet.

How does IOFF behavior differ when only VCC(A) is powered versus only VCC(B)?

When VCC(A) = 0 V and VCC(B) = 5.0 V, A-port leakage is ≤±2 μA and A1–A8 enter high-Z; B-port remains fully functional. When VCC(B) = 0 V and VCC(A) = 5.0 V, B-port leakage is ≤±2 μA and B1–B8 go high-Z, while A-port operates normally - confirmed in Table 6 "ΔIOFF" and functional description Section 6.