Nexperia USA Inc. 74LVC4245APW,112

Overview

74LVC4245APW,112 from Nexperia is an octal dual-supply translating transceiver with 3-state bus-compatible outputs in both directions, designed for bidirectional level translation between 3 V (VCC(B)) and 5 V (VCC(A)) buses. It features independent DIR and active-low OE controls, Schmitt-trigger inputs for noise immunity, and operates across -40 °C to +125 °C. Used in mixed-voltage microcontroller I/O expansion and legacy 5 V peripheral interfacing.

For engineers reviewing the 74LVC4245APW,112 datasheet, 74LVC4245APW,112 pinout, 74LVC4245APW,112 application, or 74LVC4245APW,112 equivalent, key selection criteria include dual-supply voltage range (1.5–5.5 V on VCC(A), 1.5–3.6 V on VCC(B)), propagation delay ≤8.5 ns (Bn→An at 3.3 V), 3-state isolation during suspend mode, and TSSOP24 package compatibility with high-density PCB layouts.

Technical Context

This transceiver implements true bidirectional data flow controlled by DIR and OE: when OE is LOW, direction is set by DIR-HIGH enables A→B transfer, LOW enables B→A transfer. Schmitt-trigger inputs tolerate slow-rising signals and improve noise margin across both supply domains.

VCC(A) must be ≥ VCC(B) during normal operation (except suspend mode), and the device guarantees no current path between supplies when either VCC is 0 V. Input clamping supports 5.5 V tolerance on control pins regardless of supply levels, enabling robust interfacing with legacy 5 V logic while powered from 3.3 V.

Key Specifications

Pinout & Package

TSSOP24 package (SOT355-1): 24-pin thin shrink small outline, 4.4 mm body width, 0.65 mm pitch, lead-free and RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC4245APWR, the 74LVC4245APW,112 offers superior high-temperature leakage performance and full +125 °C operation; compared with 74AVC4245PW,118, it retains 5 V bus compatibility and higher ESD robustness at the cost of slightly higher propagation delay.

Availability

74LVC4245APW,112 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, embedded MCU peripheral interface, and automotive body control module applications requiring stable component supply across extended temperature ranges.

Supply support for 74LVC4245APW,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 headquartered in Nijmegen, Netherlands, specializing in high-volume production of essential semiconductors with focus on efficiency, reliability, and sustainability.

The 74LVC4245A belongs to Nexperia's LVC logic family, engineered specifically for robust mixed-voltage system integration in industrial automation, communications infrastructure, and consumer electronics where power efficiency and signal integrity across voltage domains are critical.

FAQ

Can 74LVC4245APW,112 operate with VCC(A) = 3.3 V and VCC(B) = 2.5 V?

No. Per Figure 3 and Section 8, VCC(A) must be ≥ VCC(B) during normal operation. While VCC(A) can be as low as 1.5 V, the device requires VCC(A) ≥ VCC(B) to guarantee correct logic thresholds and output drive strength. Using VCC(A) = 3.3 V with VCC(B) = 2.5 V violates this constraint and may cause undefined behavior or excessive ICC.

What is the maximum capacitive load the 74LVC4245APW,112 can drive on the B-side outputs?

The device is characterized for CL = 50 pF in dynamic testing (Table 9). Its CPD is 17 pF (enabled) and 5 pF (disabled) on the 3 V bus (An→Bn), indicating optimized drive capability for typical PCB traces and standard logic inputs. Driving >75 pF loads may increase propagation delay beyond 8.5 ns and degrade edge rate; external series termination is recommended for heavy loads.

Is the DIR pin 5 V tolerant when VCC(B) = 3.3 V and VCC(A) = 5 V?

Yes. Table 5 specifies VI(max) = 5.5 V for control inputs (DIR, OE) regardless of supply voltages. The internal input protection circuitry clamps to VCC(A) + 0.5 V, allowing safe operation with 5 V control signals even when VCC(B) is 3.3 V and VCC(A) is 5 V - a key feature enabling direct connection to 5 V microcontroller GPIOs.

Does the 74LVC4245APW,112 support hot insertion when one supply is powered and the other is off?

Yes. Section 1 states "In suspend mode, when either supply is zero, there is no current path between supplies." This zero-current isolation prevents backfeeding and latch-up during partial power-up sequences, making it suitable for hot-plug applications such as modular I/O card insertion into powered backplanes - provided OE is held HIGH during insertion.