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SN74CBT3244C ACTIVE 5-V, 1:1 (SPST), 8-channel FET bus switch with –2-V undershoot protection and 2 control inputs Upgraded powered-off protection and undershoot protection support

Product details

Configuration 1:1 SPST Number of channels (#) 8 Power supply voltage - single (V) 5 Ron (Typ) (Ohms) 5 ON-state leakage current (Max) (µA) 5 Bandwidth (MHz) 200 Operating temperature range (C) -40 to 85 Input/output continuous current (Max) (mA) 128 Rating Catalog
Configuration 1:1 SPST Number of channels (#) 8 Power supply voltage - single (V) 5 Ron (Typ) (Ohms) 5 ON-state leakage current (Max) (µA) 5 Bandwidth (MHz) 200 Operating temperature range (C) -40 to 85 Input/output continuous current (Max) (mA) 128 Rating Catalog
SOIC (DW) 20 132 mm² 12.8 x 10.3 SSOP (DB) 20 38 mm² 5.3 x 7.2 SSOP (DBQ) 20 52 mm² 8.65 x 6 TSSOP (PW) 20 42 mm² 6.5 x 6.4 TVSOP (DGV) 20 32 mm² 5 x 6.4 VQFN (RGY) 20 16 mm² 3.5 x 4.5
  • High-Bandwidth Data Path (Up to 200 MHz)
  • Control Inputs Can Be Driven by TTL or 5-V/3.3-V
    CMOS Outputs
  • Low and Flat ON-State Resistance (ron)
    Characteristics Over Operating Range
    (ron= 5 Ω Typical)
  • Bidirectional Data Flow With Near-Zero
    Propagation Delay
  • Low Input/Output Capacitance Minimizes Loading
    and Signal Distortion
    (Cio(OFF) = 6 pF Typical)
  • Low Power Consumption (ICC = 50 µA Maximum)
  • VCC Operating Range From 4.5 V to 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)
  • Standard ’244-Type Pinout
  • High-Bandwidth Data Path (Up to 200 MHz)
  • Control Inputs Can Be Driven by TTL or 5-V/3.3-V
    CMOS Outputs
  • Low and Flat ON-State Resistance (ron)
    Characteristics Over Operating Range
    (ron= 5 Ω Typical)
  • Bidirectional Data Flow With Near-Zero
    Propagation Delay
  • Low Input/Output Capacitance Minimizes Loading
    and Signal Distortion
    (Cio(OFF) = 6 pF Typical)
  • Low Power Consumption (ICC = 50 µA Maximum)
  • VCC Operating Range From 4.5 V to 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)
  • Standard ’244-Type Pinout

The SN74CBT3244 device provides eight bits of high-speed TTL-compatible bus switching. The SOIC, SSOP, TSSOP, and TVSOP packages provide a standard ’244 device pinout. The low ON-state resistance of the switch allows connections to be made with minimal propagation delay. The device is organized as two 4-bit low-impedance switches with separate output-enable (OE) inputs.

The SN74CBT3244 device provides eight bits of high-speed TTL-compatible bus switching. The SOIC, SSOP, TSSOP, and TVSOP packages provide a standard ’244 device pinout. The low ON-state resistance of the switch allows connections to be made with minimal propagation delay. The device is organized as two 4-bit low-impedance switches with separate output-enable (OE) inputs.

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Technical documentation

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Type Title Date
* Data sheet SN74CBT3244 Octal FET Bus Switch datasheet (Rev. O) 29 Sep 2015
Application note Selecting the Right Texas Instruments Signal Switch (Rev. C) 06 Aug 2021
Application note Implications of Slow or Floating CMOS Inputs (Rev. E) 26 Jul 2021
Application note Multiplexers and Signal Switches Glossary (Rev. A) 09 Jun 2021
Selection guide Little Logic Guide 2018 (Rev. G) 06 Jul 2018
Selection guide Logic Guide (Rev. AB) 12 Jun 2017
Application note How to Select Little Logic (Rev. A) 26 Jul 2016
Application note Understanding and Interpreting Standard-Logic Data Sheets (Rev. C) 02 Dec 2015
User guide LOGIC Pocket Data Book (Rev. B) 16 Jan 2007
More literature Digital Bus Switch Selection Guide (Rev. A) 10 Nov 2004
More literature Design Summary for WCSP Little Logic (Rev. B) 04 Nov 2004
Application note Semiconductor Packing Material Electrostatic Discharge (ESD) Protection 08 Jul 2004
Application note Selecting the Right Level Translation Solution (Rev. A) 22 Jun 2004
User guide Signal Switch Data Book (Rev. A) 14 Nov 2003
More literature Logic Cross-Reference (Rev. A) 07 Oct 2003
More literature CBT RAID Application Clip 12 Jun 2003
Application note Bus FET Switch Solutions for Live Insertion Applications 07 Feb 2003
Application note Texas Instruments Little Logic Application Report 01 Nov 2002
Application note TI IBIS File Creation, Validation, and Distribution Processes 29 Aug 2002
More literature Standard Linear & Logic for PCs, Servers & Motherboards 13 Jun 2002
Application note 16-Bit Widebus Logic Families in 56-Ball, 0.65-mm Pitch Very Thin Fine-Pitch BGA (Rev. B) 22 May 2002
Application note Flexible Voltage-Level Translation With CBT Family Devices 20 Jul 1999
User guide CBT (5-V) And CBTLV (3.3-V) Bus Switches Data Book (Rev. B) 01 Dec 1998
Application note 3.3-V to 2.5-V Translation with Texas Instruments Crossbar Technology (Rev. A) 03 Apr 1998
Application note Migration From 3.3-V To 2.5-V Power Supplies For Logic Devices 01 Dec 1997
Application note 5-V To 3.3-V Translation With the SN74CBTD3384 (Rev. B) 01 Mar 1997
Application note Understanding Advanced Bus-Interface Products Design Guide 01 May 1996

Design & development

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Interface adapter

LEADED-ADAPTER1 — Surface mount to DIP header adapter for quick testing of TI's 5, 8, 10, 16 & 24-pin leaded packages

The EVM-LEADED1 board allows for quick testing and bread boarding of TI's common leaded packages.  The board has footprints to convert TI's D, DBQ, DCT,DCU, DDF, DGS, DGV, and PW surface mount packages to 100mil DIP headers.     

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SOIC (DW) 20 View options
SSOP (DB) 20 View options
SSOP (DBQ) 20 View options
TSSOP (PW) 20 View options
TVSOP (DGV) 20 View options
VQFN (RGY) 20 View options

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