Nexperia USA Inc. 74LVCH16245ADGG,51

Overview

74LVCH16245ADGG,51 from Nexperia is a 16-bit 3-state bus transceiver with dual direction control (1DIR/2DIR) and dual output enable (1OE/2OE), operating from 1.2 V to 3.6 V supply while tolerating 5.5 V inputs. It supports bidirectional data flow across two independent 8-bit ports or as a unified 16-bit interface, features bus hold on all data inputs to eliminate external pull-ups, and includes IOFF circuitry for partial power-down protection in mixed-voltage systems. It is used in industrial backplane interfaces requiring level translation between 3.3 V logic and legacy 5 V peripherals.

For engineers reviewing the 74LVCH16245ADGG,51 datasheet, 74LVCH16245ADGG,51 pinout, 74LVCH16245ADGG,51 application, or 74LVCH16245ADGG,51 equivalent, this device is selected for high-density PCBs needing low-noise 16-bit bidirectional buffering with guaranteed 5 V tolerance, Schmitt-trigger input noise immunity, and -40 °C to +125 °C operation without external biasing components.

Technical Context

This transceiver implements dual independent 8-bit flow-through architecture with separate DIR/OE controls per port, enabling asymmetric direction and enable timing. Its bus hold circuit sustains data input states at ±75 μA (VCC = 3.0 V), eliminating floating-bus risk without external resistors.

The IOFF feature actively disables outputs when VCC = 0 V, blocking backflow current up to ±20 μA, and Schmitt-trigger inputs support slow-rising signals with Δt/ΔV ≤ 20 ns/V (VCC = 1.2 V) and ≤ 10 ns/V (VCC ≥ 2.7 V), ensuring robust operation in noisy environments.

Key Specifications

Pinout & Package

TSSOP48 (SOT362-1) package: 48-pin plastic thin shrink small outline, 6.1 mm body width, 0.5 mm lead pitch, designed for high-density routing and low-inductance grounding via eight GND pins and four VCC pins.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit bus transceiver applications.

Compared with SN74LVC16245ADGGR and 74ALVC16245PW,118, the 74LVCH16245ADGG,51 uniquely combines bus hold, IOFF, and 5.5 V tolerance in a single 48-pin TSSOP package - making it the sole option for robust, maintenance-free 16-bit interfacing in thermally demanding, mixed-voltage industrial systems.

Availability

74LVCH16245ADGG,51 is available at Aetrix Electronics and suitable for industrial backplane interfaces, automotive body control modules, test equipment digital I/O cards, and programmable logic controller expansion slots requiring stable component supply across extended temperature ranges.

Supply support for 74LVCH16245ADGG,51 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 logic, analog, and MOSFET solutions optimized for efficiency, reliability, and miniaturization in industrial and automotive applications.

The 74LVCH series targets mixed-voltage digital interfacing, emphasizing robustness in harsh environments through features like bus hold, IOFF, and wide VCC tolerance - specifically engineered for next-generation control and instrumentation systems.

FAQ

Does 74LVCH16245ADGG,51 support hot insertion?

Yes - its IOFF circuitry actively disables outputs and limits power-off leakage to ±20 μA when VCC = 0 V, preventing back-current damage during live insertion into powered backplanes. This capability is validated per JEDEC JESD78 and confirmed in the datasheet's limiting values table under IOFF parameter.

Can 74LVCH16245ADGG,51 drive a 50 pF load at 3.3 V with <5 ns propagation delay?

Yes - at VCC = 3.3 V and CL = 50 pF, typical propagation delay is 2.4 ns (max 4.5 ns) per Table 7, meeting sub-5 ns timing requirements for 100+ MHz parallel bus operation. Measured under conditions matching Figure 6 test circuit with RL = 500 Ω.

Is bus hold active on direction and enable inputs?

No - bus hold is implemented only on data I/O pins (1A0–1A7, 1B0–1B7, 2A0–2A7, 2B0–2B7) as specified in Section 9 footnote [4]. Control inputs 1DIR, 2DIR, 1OE, and 2OE require external termination if left unconnected.

What is the maximum sustained output current per pin?

The absolute maximum DC output current per pin is ±50 mA (Table 4), but recommended operating conditions limit continuous drive to ±24 mA at VCC = 3.0 V (Table 6). Exceeding ±24 mA risks exceeding thermal limits in TSSOP48 packaging, especially above 85 °C ambient.