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SN74ALVCHR16245

ACTIVE

16-Bit Bus Transceiver With 3-State Outputs

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Data sheet

SN74ALVCHR16245

ACTIVE
Data sheet Order now

Product details

Supply voltage (min) (V) 1.65 Supply voltage (max) (V) 3.6 Number of channels 16 IOL (max) (mA) 12 IOH (max) (mA) -12 Input type LVTTL Output type LVTTL Features Balanced outputs, Bus-hold, Damping resistors, Ultra high speed (tpd <5ns) Technology family ALVC Rating Catalog Operating temperature range (°C) -40 to 85
Supply voltage (min) (V) 1.65 Supply voltage (max) (V) 3.6 Number of channels 16 IOL (max) (mA) 12 IOH (max) (mA) -12 Input type LVTTL Output type LVTTL Features Balanced outputs, Bus-hold, Damping resistors, Ultra high speed (tpd <5ns) Technology family ALVC Rating Catalog Operating temperature range (°C) -40 to 85
SSOP (DL) 48 164.358 mm² 15.88 x 10.35 TSSOP (DGG) 48 101.25 mm² 12.5 x 8.1
  • Member of the Texas Instruments Widebus™ Family
  • Operates From 1.65 V to 3.6 V
  • Max tpd of 4.2 ns at 3.3 V
  • ±12-mA Output Drive at 3.3 V
  • All Outputs Have Equivalent 26- Series Resistors, So No External Resistors Are Required
  • Bus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown Resistors
  • Latch-Up Performance Exceeds 250 mA Per JESD 17
  • ESD Protection Exceeds JESD 22
    • 2000-V Human-Body Model (A114-A)
    • 200-V Machine Model (A115-A)

Widebus is a trademark of Texas Instruments.
  • Member of the Texas Instruments Widebus™ Family
  • Operates From 1.65 V to 3.6 V
  • Max tpd of 4.2 ns at 3.3 V
  • ±12-mA Output Drive at 3.3 V
  • All Outputs Have Equivalent 26- Series Resistors, So No External Resistors Are Required
  • Bus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown Resistors
  • Latch-Up Performance Exceeds 250 mA Per JESD 17
  • ESD Protection Exceeds JESD 22
    • 2000-V Human-Body Model (A114-A)
    • 200-V Machine Model (A115-A)

Widebus is a trademark of Texas Instruments.

This 16-bit (dual-octal) noninverting bus transceiver is designed for 1.65-V to 3.6-V VCC operation.

The SN74ALVCHR16245 is designed for asynchronous communication between data buses. The control-function implementation minimizes external timing requirements.

This device can be used as two 8-bit transceivers or one 16-bit transceiver. It allows data transmission from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The output-enable (OE)\ input can be used to disable the device so that the buses are effectively isolated.

All outputs, which are designed to sink up to 12 mA, include equivalent 26- series resistors to reduce overshoot and undershoot.

To ensure the high-impedance state during power up or power down, OE\ should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended.

This 16-bit (dual-octal) noninverting bus transceiver is designed for 1.65-V to 3.6-V VCC operation.

The SN74ALVCHR16245 is designed for asynchronous communication between data buses. The control-function implementation minimizes external timing requirements.

This device can be used as two 8-bit transceivers or one 16-bit transceiver. It allows data transmission from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The output-enable (OE)\ input can be used to disable the device so that the buses are effectively isolated.

All outputs, which are designed to sink up to 12 mA, include equivalent 26- series resistors to reduce overshoot and undershoot.

To ensure the high-impedance state during power up or power down, OE\ should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended.
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Technical documentation

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Type Title Date
* Data sheet SN74ALVCHR16245 datasheet (Rev. G) 03 Sep 2004
Application note An Overview of Bus-Hold Circuit and the Applications (Rev. B) 17 Sep 2018
Selection guide Logic Guide (Rev. AB) 12 Jun 2017
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
Application note Semiconductor Packing Material Electrostatic Discharge (ESD) Protection 08 Jul 2004
Application note TI IBIS File Creation, Validation, and Distribution Processes 29 Aug 2002
User guide ALVC Advanced Low-Voltage CMOS Including SSTL, HSTL, And ALB (Rev. B) 01 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 Benefits & Issues of Migrating 5-V and 3.3-V Logic to Lower-Voltage Supplies (Rev. A) 08 Sep 1999
Application note TI SN74ALVC16835 Component Specification Analysis for PC100 03 Aug 1998
Application note Logic Solutions for PC-100 SDRAM Registered DIMMs (Rev. A) 13 May 1998
Application note Migration From 3.3-V To 2.5-V Power Supplies For Logic Devices 01 Dec 1997
Application note Bus-Interface Devices With Output-Damping Resistors Or Reduced-Drive Outputs (Rev. A) 01 Aug 1997
Application note CMOS Power Consumption and CPD Calculation (Rev. B) 01 Jun 1997
Application note Input and Output Characteristics of Digital Integrated Circuits 01 Oct 1996
Application note Live Insertion 01 Oct 1996
Application note Understanding Advanced Bus-Interface Products Design Guide 01 May 1996

Design & development

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Simulation model

SN74ALVCHR16245 IBIS Model

SCEM325.ZIP (55 KB) - IBIS Model
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Package Pins CAD symbols, footprints & 3D models
SSOP (DL) 48 Ultra Librarian
TSSOP (DGG) 48 Ultra Librarian
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