NXP Semiconductors 74LVT162245BDGG,11

Overview

74LVT162245BDGG,11 from Nexperia is a 3.3 V 16-bit bidirectional transceiver with integrated 30 Ω series output termination resistors, dual independent direction (1DIR/2DIR) and output enable (1OE/2OE) controls, ±12 mA drive strength, and bus-hold inputs eliminating external pull-ups. It operates across 2.7 V–3.6 V and supports -40 °C to +85 °C ambient, enabling use in high-speed backplane and memory interface data buses.

For engineers reviewing the 74LVT162245BDGG,11 datasheet, 74LVT162245BDGG,11 pinout, 74LVT162245BDGG,11 application, or 74LVT162245BDGG,11 equivalent, key selection criteria include its dual 8-bit configurable operation, 3-state timing (tPZH ≤ 5.3 ns), overvoltage-tolerant 5.5 V inputs, and IOFF partial power-down capability for hot-swap systems.

Technical Context

The device implements two independent 8-bit transceiver sections-Section 1 (pins 1A0–1A7/1B0–1B7) and Section 2 (2A0–2A7/2B0–2B7)-each with dedicated DIR and OE control. Direction logic is active-HIGH: HIGH on nDIR enables A→B flow; LOW enables B→A flow.

Each output integrates a 30 Ω series resistor (per Fig. 3), enabling direct connection to 50 Ω transmission lines without external termination. Bus-hold circuitry maintains valid logic states on unused I/Os at VI = 0.8 V (IBHL = 75–130 μA) or VI = 2.0 V (IBHH = −75 to −130 μA), preventing floating nodes.

Key Specifications

Pinout & Package

TSSOP48 plastic thin shrink small outline package (SOT362-1), 48-pin, 6.1 mm body width, 0.5 mm pitch, lead-free and RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC16245ADGGR and 74ALVCH162244DGG,11, the 74LVT162245BDGG,11 uniquely combines bidirectional operation, integrated 30 Ω termination, bus-hold, and 5.5 V input tolerance in a single TSSOP48 package-enabling compact, robust, and hot-swap-capable designs without supplemental components.

Availability

74LVT162245BDGG,11 is available at Aetrix Electronics and suitable for memory interface buses, industrial backplanes, processor local bus extensions, and legacy peripheral bridging requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for 74LVT162245BDGG,11 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, automotive, and consumer applications.

The 74LVT162245B belongs to Nexperia's LVT (Low-Voltage TTL) logic family, engineered for high-speed 3.3 V system interfacing with emphasis on signal integrity, hot-swap safety, and reduced external component count.

FAQ

What is the maximum clock frequency supported by the 74LVT162245BDGG,11 in a data bus application?

The device does not operate on a clock signal-it is asynchronous. Its usable data rate is determined by propagation delay (tPLH/tPHL ≤ 3.5 ns) and load conditions. At 3.3 V with 50 pF load, it reliably supports bidirectional data transfers up to 200 MHz in point-to-point configurations, assuming proper PCB layout and termination.

Can the 74LVT162245BDGG,11 be used to interface a 3.3 V microcontroller with a 5 V EEPROM?

Yes-the inputs tolerate up to 5.5 V regardless of VCC level, allowing direct connection of 5 V EEPROM outputs to 1A/2A pins. Outputs swing 0–VCC (3.3 V), so EEPROM inputs must accept 3.3 V logic HIGH. For bidirectional I²C, additional open-drain handling is required; this device is suited for parallel EEPROM data/address buses only.

Does the 30 Ω series termination apply to all 16 outputs, and is it present in both directions?

Yes-each of the 16 outputs (1A0–1A7, 1B0–1B7, 2A0–2A7, 2B0–2B7) includes an internal 30 Ω series resistor, active whenever the output driver is enabled in either direction (A→B or B→A). This is confirmed in Fig. 3 and Section 1 General Description.

How does the bus-hold feature behave during power-up, and does it require external configuration?

Bus-hold activates automatically at power-on and requires no external components or configuration. It holds unused inputs at their last valid logic state with IBHL/IBHH currents specified at ±75–130 μA. During VCC ramp-up, bus-hold remains functional once VCC exceeds ~1.2 V, preventing metastability on floating lines before firmware initializes I/Os.