Nexperia USA Inc. 74ALVC164245DL,118

Overview

74ALVC164245DL,118 from Nexperia is a 16-bit dual-supply translating transceiver in TSSOP48 package, enabling bidirectional level translation between 3 V (VCC(A): 1.5–3.6 V) and 5 V (VCC(B): 1.5–5.5 V) buses. It features two independent 8-bit channels (1A/1B and 2A/2B), non-inverting 3-state outputs, and separate direction (1DIR/2DIR) and output enable (1OE/2OE) controls referenced to their respective supply domains. It is used in mixed-voltage system interconnects such as FPGA-to-ASIC communication or legacy 5 V peripheral interfacing with modern 3 V controllers.

For engineers reviewing the 74ALVC164245DL,118 datasheet, 74ALVC164245DL,118 pinout, 74ALVC164245DL,118 application, or 74ALVC164245DL,118 equivalent, key selection criteria include dual-rail voltage tolerance, propagation delay under asymmetric VCC conditions (e.g., 1.0–7.5 ns), IOFF-enabled partial power-down, and compliance with JEDEC standards JESD8-7/8-5/8C across -40 °C to +125 °C.

Technical Context

This device implements a dual-rail CMOS transceiver architecture with isolated VCC(A) and VCC(B) domains. Each channel uses separate DIR and OE inputs referenced to its own supply rail, ensuring correct logic threshold alignment and preventing back-powering during suspend mode when one supply is at 0 V.

Its IOFF circuitry actively disables I/O paths when either VCC is absent, eliminating leakage current between rails. The device supports TTL-level input compatibility on both sides and tolerates overvoltage up to 5.5 V on all inputs regardless of VCC(A) setting - critical for hot-swap and mixed-voltage board bring-up.

Key Specifications

Pinout & Package

TSSOP48 package (SOT362-1), 48-pin plastic thin shrink small outline, body width 6.1 mm, lead pitch 0.5 mm, compliant with JEDEC MO-153.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC164245DGGR and 74AVC164245T, the 74ALVC164245DL,118 uniquely supports 1.5 V A-side operation and full –40 °C to +125 °C qualification while delivering best-in-class IOFF leakage (<±10 μA) for robust power sequencing - making it optimal for industrial and infrastructure applications demanding wide voltage flexibility and thermal resilience.

Availability

74ALVC164245DL,118 is available at Aetrix Electronics and suitable for industrial PLC backplane interfaces, embedded FPGA-to-microcontroller bridges, server BMC subsystems, and automated test equipment requiring stable component supply across extended temperature and mixed-voltage operating conditions.

Supply support for 74ALVC164245DL,118 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 leading semiconductor manufacturer specializing in high-performance logic, analog, and discrete components, with global R&D and manufacturing facilities focused on reliability and energy efficiency.

The 74ALVC logic family targets low-voltage, mixed-supply digital interfacing applications, emphasizing robust level translation, ultra-low static power, and industrial-grade thermal performance without sacrificing speed.

FAQ

Can 74ALVC164245DL,118 operate with VCC(A) = 1.5 V and VCC(B) = 5.5 V simultaneously?

Yes. The device is explicitly rated for VCC(A) from 1.5 V to 3.6 V and VCC(B) from 1.5 V to 5.5 V, with VCC(B) ≥ VCC(A) required. At these extremes, VIH/VIL thresholds remain valid, and propagation delay is specified at 1.5–7.5 ns depending on load and transition rate - confirmed in Table 5 and Table 7 of the Rev. 13 datasheet.

What happens to the B-side outputs when VCC(A) = 0 V but VCC(B) = 5 V?

The IOFF circuitry forces all B-side outputs into high-impedance state with leakage < ±10 μA, preventing current flow from VCC(B) into the unpowered A-side domain. This behavior is guaranteed across –40 °C to +125 °C and is validated per JESD78 Class II Level B latch-up testing.

Is the 74ALVC164245DL,118 pin-compatible with older SSOP48 variants like 74ALVC164245DL?

No. The 74ALVC164245DL,118 uses TSSOP48 (SOT362-1) with 0.5 mm pitch, whereas the discontinued 74ALVC164245DL used SSOP48 (SOT370-1) with 0.635 mm pitch. Footprint, solder mask, and reflow profile differ - mechanical adaptation is required for replacement.

Does this device support hot-swap insertion while VCC(B) is live and VCC(A) is ramping?

Yes. The IOFF feature and overvoltage-tolerant inputs ensure that B-side pins remain high-Z and undamaged during VCC(A) ramp-up. No external protection is needed, provided A-side signals remain below 5.5 V and GND connections are established before power application - per Section 1 of the datasheet.