Texas Instruments CALVCH16245MDLREP

Overview

CALVCH16245MDLREP from Texas Instruments is a 16-bit dual-octal noninverting bus transceiver with 3-state outputs, designed for asynchronous bidirectional data transfer between buses operating at 1.65 V to 3.6 V. It features ±24-mA output drive at 3.3 V, 3 ns max propagation delay, and integrated bus-hold circuitry eliminating external pullup/pulldown resistors. It supports extended temperature operation from –55°C to 125°C and is used in high-reliability aerospace and defense data-path isolation.

For engineers reviewing the CALVCH16245MDLREP datasheet, CALVCH16245MDLREP pinout, CALVCH16245MDLREP application, or CALVCH16245MDLREP equivalent, key selection criteria include its SSOP-48 package, dual-direction control (1DIR/2DIR), independent output-enable (1OE/2OE), and bus-hold input stabilization - critical for unpowered-bus robustness in avionics backplanes and radiation-tolerant computing systems.

Technical Context

This device implements two independent 8-bit transceiver sections, each with separate direction (DIR) and output-enable (OE) controls, enabling flexible A↔B or B↔A data flow per section. Its bus-hold circuitry actively maintains valid logic states on undriven inputs without external components, reducing system-level BOM count and improving noise immunity during hot-swap or partial-power-down conditions.

The CALVCH16245MDLREP operates across a wide supply range (1.65–3.6 V) with guaranteed timing performance over –55°C to 125°C, meeting MIL-PRF-38535 Class V and Enhanced Product (EP) requirements. Its 3-state outputs support high-density bus sharing, while latch-up immunity (>250 mA) and ESD protection (2000-V HBM, 200-V MM) ensure survivability in harsh electromagnetic environments.

Key Specifications

Pinout & Package

Package: SSOP-48 (DL), 11.35 mm × 16.2 mm body, 0.5-mm pitch, RoHS-compliant NiPdAu lead finish, MSL Level-1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74ALVCH16245-EP and SN74LVC16245ADGGR, CALVCH16245MDLREP uniquely delivers extended temperature operation, bus-hold functionality, and enhanced product qualification - making it the sole choice for mission-critical systems requiring zero external biasing and proven reliability beyond commercial limits.

Availability

CALVCH16245MDLREP is available at Aetrix Electronics and suitable for aerospace avionics, defense C4ISR backplanes, radiation-tolerant computing, and downhole instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for CALVCH16245MDLREP 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 high-reliability ICs, with decades of heritage in space-qualified and military-grade components.

The CALVCH16245MDLREP belongs to TI's Widebus™ family of high-speed bus interface devices, engineered specifically for robust, low-skew, multi-voltage-domain data path isolation in safety-critical and extended-temperature systems.

FAQ

What is the operating temperature range of CALVCH16245MDLREP?

CALVCH16245MDLREP is rated for continuous operation from –55°C to 125°C ambient temperature. This extended range is validated per MIL-PRF-38535 Class V and TI's Enhanced Product (EP) qualification protocol, including HAST, temperature cycling, and intermetallic life testing - making CALVCH16245MDLREP suitable for deployment in spacecraft, jet engines, and deep-earth drilling equipment where thermal extremes are routine.

Does CALVCH16245MDLREP require external pullup or pulldown resistors on its data inputs?

No, CALVCH16245MDLREP does not require external pullup or pulldown resistors because it integrates active bus-hold circuitry on all A and B port inputs. This feature maintains undriven inputs at valid logic levels using ±75 µA hold current at 3 V, eliminating floating-node risks during power sequencing or bus contention. Using external resistors with CALVCH16245MDLREP is explicitly discouraged in the datasheet as it may interfere with bus-hold operation.

What is the maximum propagation delay for CALVCH16245MDLREP at 3.3 V and full temperature range?

The maximum propagation delay (tpd) for CALVCH16245MDLREP is 4.0 ns at VCC = 3.3 V over the full –55°C to 125°C operating range. This value is measured from DIR or OE input transition to corresponding output transition under loaded conditions (CL = 50 pF), and is guaranteed by TI's EP test flow - critical for timing-critical applications such as synchronous bus arbitration in avionics data concentrators where sub-5 ns latency is mandatory.

Is CALVCH16245MDLREP pin-compatible with other variants in the ALVCH16245 family?

Yes, CALVCH16245MDLREP is pin-compatible with CALVCH16245IDLREP and SN74ALVCH16245-EP, all using the SSOP-48 (DL) package with identical pin assignments and mechanical footprint. However, CALVCH16245MDLREP differs in temperature rating (–55°C to 125°C vs. –40°C to 85°C) and EP qualification - meaning PCB layout reuse is fully supported, but system-level thermal and reliability validation must reflect the extended range.

What packaging and reel specifications apply to CALVCH16245MDLREP?

CALVCH16245MDLREP ships in tape-and-reel format: 1000 units per reel, 32.4-mm reel width, 330-mm reel diameter, Q1 pin-1 quadrant orientation, and 16.0-mm pitch. The carrier tape conforms to EIA-481 standards, with cavity dimensions A0 = 11.35 mm, B0 = 16.2 mm, K0 = 3.1 mm, and overall tape width W = 32.0 mm - compatible with standard SMT pick-and-place equipment used in high-reliability electronics manufacturing.