Nexperia USA Inc. 74AVC16T245BX,518

Overview

74AVC16T245BX,518 from Nexperia is a 16-bit dual-supply translating transceiver with bidirectional level-shifting, 3-state outputs, and independent VCC(A) and VCC(B) rails (0.8 V to 3.6 V). It functions as two independent 8-bit transceivers or one unified 16-bit unit, enabling voltage translation between 0.8 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V, and 3.3 V domains. Used in mixed-voltage SoC interconnects, memory expansion buses, and FPGA I/O bridging where dynamic direction control and IOFF-enabled partial power-down are required.

For engineers reviewing the 74AVC16T245BX,518 datasheet, 74AVC16T245BX,518 pinout, 74AVC16T245BX,518 application, or 74AVC16T245BX,518 equivalent, key selection criteria include configurable nDIR/nOE logic mapping, suspend-mode behavior under asymmetric VCC loss, maximum data rate per voltage pair (e.g., 380 Mbit/s for ≥1.8 V ↔ 3.3 V), IOFF leakage < ±1 μA at 0 V supply, and TSSOP48 thermal derating (12.2 mW/K above 109 °C).

Technical Context

The device implements dual-rail CMOS I/O with separate input reference domains: nAn, nDIR, and nOE inputs referenced to VCC(A); nBn inputs referenced to VCC(B). Direction control is synchronous and edge-independent-nDIR HIGH enables A→B transmission, LOW enables B→A. Output enable is active-low (nOE HIGH forces high-impedance).

Suspend mode activates when either VCC(A) or VCC(B) = GND, forcing all nAn/nBn ports into high-impedance regardless of nDIR/nOE state. The IOFF circuit actively disables outputs during power-down, limiting backflow current to < ±1 μA while maintaining input tolerance up to 3.6 V even with 0 V supply.

Key Specifications

Pinout & Package

TSSOP48 package (SOT362-1), plastic thin shrink small outline, 48 leads, 6.1 mm body width, 0.5 mm pitch. Pin 1 = 1DIR; Pin 24 = 2DIR; Pins 4/10/15/21/28/34/39/45 = GND; Pins 7/18 = VCC(B); Pins 31/42 = VCC(A); Pins 48/25 = 1OE/2OE.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-supply translating transceiver applications.

Compared with SN74AVC16T245DGGR and 74LVC16T245PW,118, the 74AVC16T245BX,518 uniquely supports 0.8 V operation and IOFF-enabled power sequencing-making it the sole option for battery-powered IoT nodes and mixed-voltage automotive domains requiring guaranteed fault isolation.

Availability

74AVC16T245BX,518 is available at Aetrix Electronics and suitable for memory expansion interfaces, FPGA-to-MCU bridges, and automotive ADAS sensor hubs requiring stable component supply across extended temperature ranges and mixed-voltage domains.

Supply support for 74AVC16T245BX,518 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 delivering high-performance, reliable components for automotive, industrial, and consumer electronics, with leadership in logic, MOSFETs, and ESD protection.

The 74AVC logic family targets ultra-low-voltage, high-speed digital interfacing-designed specifically for energy-efficient portable devices, battery-powered sensors, and mixed-voltage SoC interconnects demanding sub-1 V operation and robust power sequencing.

FAQ

What is the minimum operating voltage for VCC(A) and VCC(B) on the 74AVC16T245BX,518?

The absolute minimum supply voltage for both VCC(A) and VCC(B) is 0.8 V, verified across −40 °C to +125 °C. Operation below 0.8 V is not characterized and may result in undefined logic states, increased propagation delay variance (>16 ns), or failure to meet IOFF leakage specifications. This 0.8 V threshold enables direct interfacing with advanced low-power processors and memory I/O standards such as LPDDR5.

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

When VCC(A) = 3.6 V and VCC(B) = 0 V (GND), the device enters suspend mode: all nAn and nBn ports enter high-impedance regardless of nDIR or nOE states. Input leakage remains ≤±5 μA, and no back-current flows into the unpowered VCC(B) rail. This behavior is symmetric-if VCC(B) is powered and VCC(A) is 0 V, the same high-Z state applies to both banks.

Can the 74AVC16T245BX,518 translate between 0.8 V and 3.3 V at 380 Mbit/s reliably?

Yes-Nexperia specifies 380 Mbit/s maximum data rate for translation between ≥1.8 V and 3.3 V, but actual characterization shows functional operation at 0.8 V ↔ 3.3 V up to 200 Mbit/s (per Table 2). At 380 Mbit/s, the minimum valid VCC(A) is 1.8 V; using 0.8 V on either rail at that speed violates setup/hold timing margins and increases bit error rate beyond specification.

Is the TSSOP48 package (SOT362-1) RoHS and REACH compliant?

Yes-the 74AVC16T245BX,518 in TSSOP48 (SOT362-1) meets RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006, with lead-free terminations and halogen-free molding compound. Certificate of Compliance is available from Nexperia upon request, and material declarations confirm cadmium, mercury, hexavalent chromium, PBB, and PBDE levels below threshold limits.