Texas Instruments SN74CBT16233DGVR

Overview

SN74CBT16233DGVR from Texas Instruments is a 16-bit 1-of-2 FET multiplexer/demultiplexer in TVSOP-56 package, featuring 5-Ω on-state resistance, TTL-compatible control inputs (VIH = 2 V, VIL = 0.8 V), and operation across –40°C to 85°C. It enables bidirectional signal routing between one A-port and two B-ports (B1/B2) for memory interleaving and bus sharing in high-speed digital systems.

For engineers reviewing the SN74CBT16233DGVR datasheet, SN74CBT16233DGVR pinout, SN74CBT16233DGVR application, or SN74CBT16233DGVR equivalent, key selection criteria include its 56-pin TVSOP footprint, 5 Ω switch resistance, sub-1 ns propagation delay (A↔B), 128 mA continuous channel current rating, and absence of through-current during switching transitions.

Technical Context

This device implements dual 8-bit or single 16-bit 1-of-2 analog/digital signal routing using low-threshold FET switches. Its SEL1/SEL2 inputs select between B1 and B2 paths, while TEST1/TEST2 enable simultaneous connection of A to both B1 and B2 - supporting diagnostic or broadcast modes.

The architecture avoids shoot-through by ensuring non-overlapping conduction windows during direction changes. Control logic accepts 5-V CMOS, 5-V TTL, or LVTTL drivers, and all unused control inputs must be tied to VCC or GND per TI SCBA004 guidance to prevent floating-node-induced malfunction.

Key Specifications

Pinout & Package

SN74CBT16233DGVR uses a 56-pin Thin Very Small Outline Package (TVSOP-DGV), 7.9 mm × 4.5 mm body size, 1.2 mm max height, JEDEC MO-194 compliant, with gull-wing leads and Q1 pin-1 quadrant orientation in tape-and-reel delivery.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar FET multiplexer/demultiplexer applications.

Compared with SN74CBT16233DGGR and SN74CBT16233DLR, the SN74CBT16233DGVR offers the lowest thermal resistance among 56-pin variants and the smallest Z-height - making it optimal for space-constrained industrial controllers and high-density compute modules where thermal headroom and board stacking height are critical.

Availability

SN74CBT16233DGVR is available at Aetrix Electronics and suitable for memory interleaving, bus multiplexing, test-mode broadcasting, and high-speed logic-level translation requiring stable component supply across industrial temperature ranges.

Supply support for SN74CBT16233DGVR 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 decades of expertise in high-speed logic and interface solutions.

The SN74CBT16233DGVR belongs to TI's Widebus™ family of advanced bus-interface devices, engineered specifically for low-distortion, high-bandwidth signal routing in memory subsystems and multi-peripheral interconnect architectures.

FAQ

What is the maximum continuous current rating per channel for SN74CBT16233DGVR?

The SN74CBT16233DGVR supports up to 128 mA continuous channel current per switched path. This rating applies under recommended operating conditions (VCC = 4.75 V to 5.25 V, TA = –40°C to 85°C) and ensures reliable conduction without thermal runaway or contact degradation. Exceeding this value may increase on-resistance drift or accelerate wear-out mechanisms in the integrated FET switches.

Does SN74CBT16233DGVR require external pull-up or pull-down resistors on SEL and TEST inputs?

No - SN74CBT16233DGVR does not require external biasing on SEL1, SEL2, TEST1, or TEST2 inputs, but all unused control inputs must be actively held at VCC or GND. Floating control lines can cause undefined switching states, increased ICC, or unintended TEST-mode activation. TI application report SCBA004 explicitly mandates hard-wiring unused inputs to valid logic levels for stable operation.

Can SN74CBT16233DGVR operate with a 3.3-V supply?

No - SN74CBT16233DGVR is specified only for 4.75 V to 5.25 V supply operation. Its internal FET threshold design, TTL-compatible input structure, and absolute maximum ratings (e.g., VI ≤ VCC + 0.5 V) do not support reliable 3.3-V use. Attempting 3.3-V operation risks failure to meet VIH/VIL thresholds, elevated on-resistance (>10 Ω), or violation of safe operating area limits.

Is SN74CBT16233DGVR pin-compatible with other members of the SN74CBT16xxx series?

SN74CBT16233DGVR shares the same 56-pin DGV footprint and pinout with SN74CBT16233DGGR and SN74CBT16233DLR, but is not pin-compatible with functionally distinct variants like SN74CBT16210 (10-bit) or SN74CBT16244 (non-inverting buffer). Pin mapping is identical only within the SN74CBT16233 variant family - confirmed by TI's SCDS010K datasheet Figure 1 top-view diagram.

What is the significance of the "CY233" top-side marking on SN74CBT16233DGVR?

The "CY233" marking is the unique device identification code laser-etched on the top surface of the SN74CBT16233DGVR TVSOP package, as documented in TI's Packaging Information Addendum. It distinguishes this DGV-packaged variant from DL- and DGG-packaged versions (which carry "CBT16233") and enables traceability to wafer lot, assembly site, and date code - critical for quality audits and long-term BOM validation.