Texas Instruments CLVCC4245AMPWREP

Overview

CLVCC4245AMPWREP from Texas Instruments is an octal dual-supply bus transceiver with configurable output voltage and 3-state outputs, supporting bidirectional level translation between 4.5–5.5 V (A port) and 2.7–5.5 V (B port), featuring DIR/OE control referenced to VCCA, ±24 mA drive capability, and operation across –55°C to 125°C for aerospace and industrial bus interfacing.

For engineers reviewing the CLVCC4245AMPWREP datasheet, CLVCC4245AMPWREP pinout, CLVCC4245AMPWREP application, or CLVCC4245AMPWREP equivalent, key selection considerations include dual-rail voltage tracking, direction-controlled data flow, 3-state isolation timing (tPZL/tPHZ ≤ 10.2 ns), latch-up immunity (>250 mA), and TSSOP-24 packaging for high-density mixed-voltage PCBs.

Technical Context

The CLVCC4245AMPWREP implements a noninverting transceiver architecture with independent A- and B-port power domains: VCCA powers control logic (DIR, OE) and A-side I/O, while VCCB sets B-port output voltage levels. Direction is determined solely by the DIR input, enabling synchronous A→B or B→A data transfer without internal state retention.

Its 3-state outputs are enabled/disabled via OE referenced to VCCA, and all I/O pins feature overvoltage-tolerant structures-A-port inputs accept up to VCCA + 0.5 V, B-port inputs up to VCCB + 0.5 V-ensuring robustness during mixed-voltage power sequencing and hot-swap scenarios.

Key Specifications

Pinout & Package

TSSOP-24 package (PW), 7.8 mm × 4.4 mm body, 1.2 mm max height, 0.65 mm pitch, exposed pad not present, RoHS-compliant NiPdAu finish, MSL Level-1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CLVCC4245AMPWREP, SN74LVCC4245APWREPG4 offers identical performance at lower documentation overhead, while V62/06658-01XE adds QML-V qualification for mission-critical deployments-neither is pin-compatible with non-TI 24-pin transceivers due to unique dual-supply control architecture.

Availability

CLVCC4245AMPWREP is available at Aetrix Electronics and suitable for industrial PLC backplanes, aerospace avionics buses, and automotive ADAS sensor hubs requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for CLVCC4245AMPWREP 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

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies, with over 90 years of innovation in high-reliability components.

The SN74LVCC4245A product line delivers robust dual-supply bus interface solutions for mixed-voltage system integration in harsh-environment applications including space, defense, and industrial automation.

FAQ

What voltage ranges does the CLVCC4245AMPWREP support on its A and B ports?

The CLVCC4245AMPWREP supports 4.5 V to 5.5 V on the A port (VCCA) and 2.7 V to 5.5 V on the B port (VCCB). Control inputs DIR and OE are referenced to VCCA, ensuring consistent logic thresholds regardless of B-port voltage. This allows CLVCC4245AMPWREP to translate bidirectionally between common industrial voltage domains such as 3.3 V ↔ 5 V without external biasing.

How does the CLVCC4245AMPWREP handle power-up sequencing between VCCA and VCCB?

The CLVCC4245AMPWREP requires VCCA to be powered before VCCB to prevent undefined states on DIR and OE. TI recommends tying OE to VCCA via a pullup resistor so it ramps with VCCA, and setting DIR appropriately (high for A→B, low for B→A) during startup. This sequencing ensures CLVCC4245AMPWREP enters a known operational state without bus contention or excessive supply current.

What is the maximum data rate supported by the CLVCC4245AMPWREP?

The CLVCC4245AMPWREP achieves propagation delays as low as 5.3 ns (B→A, VCCB = 3.3 V), supporting reliable operation at bus clock rates exceeding 100 MHz. With tPZL/tPHZ ≤ 10.2 ns and 3-state output disable timing tightly controlled, CLVCC4245AMPWREP maintains signal integrity in high-speed multiplexed bus architectures when loaded with 50 pF.

Does the CLVCC4245AMPWREP require external pullup or pulldown resistors on unused inputs?

Yes - all unused inputs of the CLVCC4245AMPWREP must be held at their associated VCC or GND to ensure proper device operation and avoid floating-node-induced current leakage or oscillation. TI's application report SCBA004 explicitly mandates this for CLVCC4245AMPWREP, especially for DIR and OE when not actively driven, to maintain predictable 3-state behavior and minimize ICCA/ICCB.

Is the CLVCC4245AMPWREP compatible with standard TSSOP-24 PCB footprints and reflow profiles?

Yes - CLVCC4245AMPWREP uses the industry-standard PW (TSSOP-24) package with 0.65 mm pitch and 7.8 mm × 4.4 mm body dimensions. It carries MSL Level-1 rating with peak reflow tolerance up to 260°C, fully compatible with standard lead-free reflow profiles. TI provides validated land patterns and stencil designs for CLVCC4245AMPWREP in its packaging documentation.