SN74CBT16212C

ACTIVE

5-V, crosspoint/exchange, 24-channel FET bus switch with –2-V undershoot protection

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5-V, crosspoint/exchange, 24-channel FET bus switch with –2-V undershoot protection

SN74CBT16212C

ACTIVE

Product details

Parameters

Configuration Crosspoint/exchange Number of channels (#) 24 Power supply voltage - single (V) 5 Ron (Typ) (Ohms) 3 Bandwidth (MHz) 200 Operating temperature range (C) -40 to 85 Features Powered-off protection, Undershoot protection Input/output continuous current (Max) (mA) 128 Rating Catalog CON (Typ) (pF) 19 open-in-new Find other Analog switches & muxes

Package | Pins | Size

SSOP (DL) 56 191 mm² 18.42 x 10.35 TSSOP (DGG) 56 113 mm² 14 x 8.1 TVSOP (DGV) 56 50 mm² 4.4 x 11.3 open-in-new Find other Analog switches & muxes

Features

  • Member of the Texas Instruments Widebus™ Family
  • Undershoot Protection for Off-Isolation on A and B Ports Up To –2 V
  • Bidirectional Data Flow, With Near-Zero Propagation Delay
  • Low ON-State Resistance (ron) Characteristics (ron = 3 Typical)
  • Low Input/Output Capacitance Minimizes Loading and Signal Distortion (Cio(OFF) = 8 pF Typical)
  • Data and Control Inputs Provide Undershoot Clamp Diodes
  • Low Power Consumption (ICC = 5 µA Max)
  • VCC Operating Range From 4 V to 5.5 V
  • Data I/Os Support 0 to 5-V Signaling Levels (0.8-V, 1.2-V, 1.5-V, 1.8-V, 2.5-V, 3.3-V, 5-V)
  • Control Inputs Can Be Driven by TTL or 5-V/3.3-V CMOS Outputs
  • Ioff Supports Partial-Power-Down Mode Operation
  • Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
  • ESD Performance Tested Per JESD 22
    • 2000-V Human-Body Model (A114-B, Class II)
    • 1000-V Charged-Device Model (C101)
  • Supports Both Digital and Analog Applications: PCI Interface, Memory Interleaving, Bus Isolation, Low-Distortion Signal Gating

Widebus is a trademark of Texas Instruments.

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Description

The SN74CBT16212C is a high-speed TTL-compatible FET bus-exchange switch with low ON-state resistance (ron), allowing for minimal propagation delay. Active Undershoot-Protection Circuitry on the A and B ports of the SN74CBT16212C provides protection for undershoot up to –2 V by sensing an undershoot event and ensuring that the switch remains in the proper OFF state.

The SN74CBT16212C operates as a 24-bit bus switch, or as a 12-bit bus-exchange that provides data exchanging between four signal ports. The select (S0, S1, S2) inputs control the data path of the bus-exchange switch. When the bus-exchange switch is ON, the A port is connected to the B port, allowing bidirectional data flow between ports. When the bus-exchange switch is disabled, a high-impedance state exists between the A and B ports.

This device is fully specified for partial-power-down applications using Ioff. The Ioff feature ensures that damaging current will not backflow through the device when it is powered down. The device has isolation during power off.

To ensure the high-impedance state during power up or power down, each select input should be tied to GND through a pulldown resistor; the minimum value of the resistor is determined by the current-sourcing capability of the driver.

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Technical documentation

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Type Title Date
* Data sheet SN74CBT16212C datasheet (Rev. A) Jan. 08, 2004
Application note Selecting the Right Texas Instruments Signal Switch (Rev. C) Aug. 06, 2021
Application note Multiplexers and Signal Switches Glossary (Rev. A) Jun. 09, 2021
Application note CBT-C, CB3T, and CB3Q Signal-Switch Families (Rev. B) Jun. 08, 2021
Application note Eliminate Power Sequencing with Powered-off Protection Signal Switches (Rev. C) Jan. 06, 2021
Selection guide Little Logic Guide 2018 (Rev. G) Jul. 06, 2018
Selection guide Logic Guide (Rev. AB) Jun. 12, 2017
Application note Understanding and Interpreting Standard-Logic Data Sheets (Rev. C) Dec. 02, 2015
User guide LOGIC Pocket Data Book (Rev. B) Jan. 16, 2007
More literature Digital Bus Switch Selection Guide (Rev. A) Nov. 10, 2004
Application note Semiconductor Packing Material Electrostatic Discharge (ESD) Protection Jul. 08, 2004
User guide Signal Switch Data Book (Rev. A) Nov. 14, 2003
More literature Logic Cross-Reference (Rev. A) Oct. 07, 2003
Application note Bus FET Switch Solutions for Live Insertion Applications Feb. 07, 2003

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Design tools & simulation

SIMULATION MODEL Download
SCDM056.ZIP (27 KB) - IBIS Model

Reference designs

REFERENCE DESIGNS Download
Cascade imaging radar capture reference design using Jacinto™ ADAS processor
TIDEP-01017 The cascade development kit has two main use cases:
  1. To use the MMWCAS-DSP-EVM as a capture card to fully evaluate the AWR2243 four-chip cascade performance by using the mmWave studio tool, please read the TIDEP-01012 design guide.
  2. To use the MMWCAS-DSP-EVM to develop radar real time SW application (...)
document-generic Schematic

CAD/CAE symbols

Package Pins Download
SSOP (DL) 56 View options
TSSOP (DGG) 56 View options
TVSOP (DGV) 56 View options

Ordering & quality

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