Nexperia USA Inc. 74AVCH2T45GT,115

Overview

74AVCH2T45GT,115 from Nexperia is a dual-bit, dual-supply voltage level translator/transceiver enabling bidirectional logic-level translation between 0.8 V and 3.6 V domains. It features two I/O ports (1A/2A referenced to VCC(A), 1B/2B to VCC(B)), DIR-controlled directionality, IOFF partial power-down protection, and integrated bus hold on all data pins. It supports high-speed interfaces in mixed-voltage SoC interconnects, such as 1.2 V FPGA ↔ 3.3 V peripheral communication.

For engineers reviewing the 74AVCH2T45GT,115 datasheet, 74AVCH2T45GT,115 pinout, 74AVCH2T45GT,115 application, or 74AVCH2T45GT,115 equivalent, key selection criteria include bidirectional translation capability across sub-1.8 V nodes, suspend-mode behavior during partial power-down, bus hold current specifications at 1.2 V/1.65 V, and propagation delay asymmetry between A→B and B→A paths under varying VCC combinations.

Technical Context

The device implements a dual-rail CMOS transceiver architecture with independent supply references: DIR and port A signals are referenced to VCC(A); port B signals to VCC(B). Direction control is synchronous-DIR HIGH enables A→B transmission, DIR LOW enables B→A-and both directions support 3-state output with simultaneous high-impedance OFF-state when either supply is at GND.

IOFF circuitry actively disables outputs during power-down, limiting backflow current to ±35 μA (max) when one supply is 0 V. Bus hold functionality sustains unused inputs at valid logic levels without external resistors, delivering ±26 μA (min) sink/source at 1.2 V and up to ±500 μA overdrive current at 3.6 V.

Key Specifications

Pinout & Package

XSON8 package (SOT833-1): plastic extremely thin small outline, no leads, 8 terminals, body size 1.0 × 1.95 × 0.5 mm. Pin 1 indicator located below marking code in lower-left corner.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-supply voltage translation applications.

Compared with TXS0102DCUR and SN74AVC2T245RSWR, the 74AVCH2T45GT,115 delivers superior partial-power-down safety, integrated bus hold, and tighter propagation delay control across wide VCC combinations-critical for automotive and battery-sensitive designs.

Availability

74AVCH2T45GT,115 is available at Aetrix Electronics and suitable for industrial sensor interfaces, FPGA-to-peripheral interconnects, automotive body control modules, and low-power wearable subsystems requiring stable component supply across extended temperature ranges.

Supply support for 74AVCH2T45GT,115 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-high-performance logic, power management, and analog devices optimized for reliability and energy efficiency.

The 74AVCH2T45 belongs to Nexperia's advanced voltage translator product line, engineered specifically for robust, low-latency bidirectional level shifting in mixed-voltage digital systems operating from 0.8 V to 3.6 V.

FAQ

What is the minimum recommended supply voltage for reliable bus hold operation?

Bus hold functionality is fully specified from VCC(A) = VCC(B) = 1.2 V, where IBHL ≥ 15 μA and IBHH ≥ −15 μA at -40 °C to +125 °C. At 0.8 V, bus hold remains functional but current values drop below guaranteed minima; design margins should be verified per application.

Can DIR be driven from a different voltage domain than VCC(A)?

No-DIR is strictly referenced to VCC(A), and its VIH/VIL thresholds scale with VCC(A) (e.g., VIH = 0.65×VCC(A) for 1.1–1.95 V). Driving DIR from another supply risks incorrect direction control or excessive input current due to clamping diodes.

How does suspend mode behave when only VCC(B) is powered?

When VCC(B) = 0 V and VCC(A) is active, both 1B and 2B enter high-impedance OFF-state (Z), while 1A and 2A remain functional. IOFF leakage is limited to ±5 μA (typ) on the B port, preventing back-current into the unpowered domain.

Is there a maximum allowable voltage difference between VCC(A) and VCC(B)?

No absolute delta-V limit is specified, but both supplies must stay within 0.8 V to 3.6 V individually. Simultaneous operation at extremes (e.g., VCC(A) = 0.8 V, VCC(B) = 3.6 V) is supported per datasheet Table 4 and dynamic characterization-propagation delay increases modestly (e.g., A→B tpd = 9.5 ns at 25 °C).