Nexperia USA Inc. 74LVT245BPW,112

Overview

74LVT245BPW,112 from Nexperia is a 3.3 V octal bidirectional transceiver with 3-state outputs, direction control (DIR), and output enable (OE). It operates across -40 °C to +85 °C, supports 2.7–3.6 V supply, delivers ±64 mA/±32 mA drive, and features bus-hold inputs eliminating external pull-ups. It interfaces between 3.3 V logic domains and 5 V-tolerant buses in high-speed data path isolation.

For engineers reviewing the 74LVT245BPW,112 datasheet, 74LVT245BPW,112 pinout, 74LVT245BPW,112 application, or 74LVT245BPW,112 equivalent, key selection criteria include bidirectional bus direction control timing, 3-state propagation delays (tPLH/tPHL ≤ 3.5 ns at 3.3 V), overvoltage-tolerant inputs (to 5.5 V), and TSSOP20 thermal performance for dense PCB layouts.

Technical Context

The 74LVT245BPW implements BiCMOS logic architecture enabling TTL-compatible input thresholds while delivering high-speed switching and robust output drive. Its DIR pin selects data flow direction between two 8-bit parallel buses (A-side ↔ B-side), and OE (active LOW) independently places all outputs in high-impedance state.

Bus-hold circuitry maintains stable logic states on unused A/B data pins without external resistors, and IOFF protection ensures minimal leakage (< ±100 μA) during partial power-down. The device complies with JEDEC JESD8C and supports live insertion/extraction due to controlled I/O clamping and ESD robustness (HBM > 2000 V).

Key Specifications

Pinout & Package

TSSOP20 package (SOT360-1): 20-pin thin shrink small outline, 4.4 mm body width, 0.65 mm pitch, exposed pad optional for thermal enhancement.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar octal bidirectional transceiver applications.

Compared with SN74LVC245APWR and 74ALVC245PW, the 74LVT245BPW,112 uniquely combines 5.5 V input tolerance, integrated bus-hold, and ±64 mA sink capability-making it optimal for rugged industrial bus isolation where reliability trumps minimal power draw.

Availability

74LVT245BPW,112 is available at Aetrix Electronics and suitable for industrial PLC backplane interfaces, embedded memory expansion buses, automated test equipment signal routing, and industrial HMI display controller interfaces requiring stable component supply and long-term lifecycle support.

Supply support for 74LVT245BPW,112 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 specializing in high-performance, reliable logic, analog, and MOSFET solutions for industrial, automotive, and computing markets.

The 74LVT245B series belongs to Nexperia's LVT (Low-Voltage TTL) logic family, designed specifically for high-speed, 3.3 V bidirectional bus interfacing with robust noise immunity and mixed-voltage system compatibility.

FAQ

What is the maximum clock frequency supported by the 74LVT245BPW,112?

The device does not operate on a clock; it is asynchronous. Its 3.5 ns maximum propagation delay (tPLH/tPHL at 3.3 V) supports reliable data transfer up to approximately 200 MHz in point-to-point configurations with proper layout and load control. System-level timing depends on bus capacitance, trace length, and driver strength.

Can the 74LVT245BPW,112 safely interface a 3.3 V microcontroller with a 5 V sensor bus?

Yes - its inputs tolerate up to 5.5 V regardless of VCC, allowing direct connection to 5 V sensor outputs. Outputs swing rail-to-rail (VOL ≤ 0.55 V, VOH ≥ 2.0 V at 3.3 V), so 5 V sensors must have TTL-compatible input thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V) to correctly interpret 3.3 V logic levels.

Does the TSSOP20 package (SOT360-1) require soldering the exposed thermal pad?

No - the exposed pad in SOT360-1 has no electrical function and may remain unsoldered. If soldered, it must be left floating or connected to GND; it is not internally tied to any pin. Thermal performance improvement is marginal (< 5 °C junction reduction) under typical industrial airflow conditions.

How does bus-hold functionality affect power consumption during idle periods?

Bus-hold draws 75–150 μA per held input (IBHL/IBHH), adding ~1.2 mA total for all eight A/B inputs in static hold. This is negligible versus ICC (0.13–0.19 mA) and avoids the 80–160 μA per external 10 kΩ pull-up resistor, making net power impact neutral or slightly favorable in unpopulated bus scenarios.