Texas Instruments CALVCH16827MDLREP

Overview

CALVCH16827MDLREP from Texas Instruments is a 20-bit noninverting buffer/driver with 3-state outputs, designed for 1.65-V to 3.6-V VCC operation. It features two independent 10-bit sections, each with dual output-enable inputs (OE1/OE2), bus-hold circuitry on all data inputs, and operation across –55°C to 125°C. Used in high-reliability board-level signal buffering for aerospace data buses and industrial backplanes.

For engineers reviewing the CALVCH16827MDLREP datasheet, CALVCH16827MDLREP pinout, CALVCH16827MDLREP application, or CALVCH16827MDLREP equivalent, key selection criteria include dual OE control per 10-bit section, bus-hold elimination of external resistors, extended temperature qualification, SSOP-56 package compatibility, and 3.6-V absolute maximum ratings.

Technical Context

This device implements two electrically isolated 10-bit buffer sections, where both OE inputs per section must be low to enable outputs; either high disables all ten Y outputs into high-impedance. Bus-hold circuitry maintains valid logic levels on floating or unused A inputs without external components.

It uses TI's EPIC™ submicron CMOS process, supports 1.65–3.6-V supply operation, and meets MIL-STD-883 ESD requirements (>2000 V HBM, >200 V MM). Absolute maximum ratings include ±50 mA continuous output current and –0.5 V to 4.6 V input/output voltage range.

Key Specifications

Pinout & Package

Package: 56-pin Shrink Small-Outline Package (SSOP), DL variant, 300-mil body width, RoHS-compliant green finish (CU NIPDAU), MSL Level-1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 20-bit buffer applications.

Compared with SN74ALVCH16827 and SN74LVC16244ADGGR, CALVCH16827MDLREP uniquely delivers 20-bit width, dual OE per section, integrated bus-hold, and full EP qualification - making it the sole option for new high-reliability designs requiring all four attributes simultaneously.

Availability

CALVCH16827MDLREP is available at Aetrix Electronics and suitable for aerospace data bus interfaces, industrial backplane buffering, military vehicle control systems, and satellite payload interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for CALVCH16827MDLREP 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 logic solutions, with decades of heritage in high-reliability interface ICs.

CALVCH16827MDLREP belongs to TI's Widebus™ family of high-speed, low-voltage bus-interface devices, engineered specifically for robust signal integrity and simplified design-in within demanding aerospace, defense, and industrial platforms.

FAQ

What is the operating voltage range for CALVCH16827MDLREP?

CALVCH16827MDLREP operates from 1.65 V to 3.6 V, supporting interoperability across 1.8-V, 2.5-V, and 3.3-V logic families. This range is validated across the full –55°C to 125°C temperature envelope, with electrical characteristics guaranteed at all VCC points within the range. The device remains functional up to 4.6 V absolute maximum supply voltage, though operation outside 1.65–3.6 V is not recommended for reliable performance.

Does CALVCH16827MDLREP require external pullup resistors on its inputs?

No, CALVCH16827MDLREP does not require external pullup or pulldown resistors on its 20 data inputs because it integrates active bus-hold circuitry. This feature maintains valid logic levels on floating or unterminated inputs, eliminating BOM items and improving reliability during hot-swap or partial-power-down conditions. Bus-hold current is specified as ±75 µA at 3 V, sufficient to override typical leakage currents.

How many output-enable signals does CALVCH16827MDLREP have, and how do they function?

CALVCH16827MDLREP has four output-enable signals: 1OE1 and 1OE2 for the first 10-bit section, and 2OE1 and 2OE2 for the second. Both OE inputs per section must be low to activate that section's outputs; if either is high, all ten corresponding Y outputs enter high-impedance. This dual-OE architecture provides fault-tolerant enable control and prevents accidental bus activation due to single-point OE failure.

What package type and lead finish does CALVCH16827MDLREP use?

CALVCH16827MDLREP uses a 56-pin Shrink Small-Outline Package (SSOP) with DL drawing, 300-mil body width. Its lead finish is CU NIPDAU, compliant with RoHS and free of antimony and bromine flame retardants (Green designation). It carries JEDEC MSL Level-1 rating, meaning it can be stored indefinitely and assembled using standard reflow profiles without pre-baking.

Is CALVCH16827MDLREP qualified for space or high-reliability applications?

Yes, CALVCH16827MDLREP is an Enhanced Product (EP) variant qualified per JEDEC and industry standards for extended temperature operation (–55°C to 125°C). Qualification includes Highly Accelerated Stress Test (HAST), temperature cycling, electromigration, and bond intermetallic life testing. It is explicitly intended for aerospace, defense, and other high-reliability applications where long-term stability under extreme conditions is mandatory.