SN74ALVTH16245

ACTIVE

2.5-V/3.3-V 16-Bit Bus Transceivers With 3-State Outputs

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2.5-V/3.3-V 16-Bit Bus Transceivers With 3-State Outputs

SN74ALVTH16245

ACTIVE

Product details

Parameters

Technology Family ALVT VCC (Min) (V) 2.3 VCC (Max) (V) 3.6 Bits (#) 16 Voltage (Nom) (V) 2.5, 3.3 F @ nom voltage (Max) (MHz) 25 ICC @ nom voltage (Max) (mA) 5 tpd @ nom Voltage (Max) (ns) 3.6, 3.1 IOL (Max) (mA) 64 IOH (Max) (mA) -32 Rating Catalog Operating temperature range (C) -40 to 85 open-in-new Find other Standard transceiver

Package | Pins | Size

SSOP (DL) 48 164 mm² 15.88 x 10.35 TSSOP (DGG) 48 101 mm² 12.5 x 8.1 TVSOP (DGV) 48 62 mm² 9.7 x 6.4 open-in-new Find other Standard transceiver

Features

  • State-of-the-Art Advanced BiCMOS Technology (ABT) Widebus™ Design for 2.5-V and 3.3-V Operation and Low Static-Power Dissipation
  • Support Mixed-Mode Signal Operation (5-V Input and Output Voltages With 2.3-V to 3.6-V VCC)
  • Typical VOLP (Output Ground Bounce)
       <0.8 V at VCC = 3.3 V, TA = 25°C
  • High Drive (–32/64 mA at 3.3-V VCC)
  • Ioff and Power-Up 3-State Support Hot Insertion
  • Use Bus Hold on Data Inputs in Place of External Pullup/Pulldown Resistors to Prevent the Bus From Floating
  • Flow-Through Architecture Facilitates Printed Circuit Board Layout
  • Distributed VCC and GND Pins Minimize High-Speed Switching Noise
  • Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II

Widebus is a trademark of Texas Instruments.

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Description

The ’ALVTH16245 devices are 16-bit (dual-octal) noninverting 3-state transceivers designed for 2.5-V or 3.3-V VCC operation, but with the capability to provide a TTL interface to a 5-V system environment.

These devices can be used as two 8-bit transceivers or one 16-bit transceiver. They allow 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.

These devices are fully specified for hot-insertion applications using Ioff and power-up 3-state. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down. The power-up 3-state circuitry places the outputs in the high-impedance state during power up and power down, which prevents driver conflict.

Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended.

When VCC is between 0 and 1.2 V, the devices are in the high-impedance state during power up or power down. However, to ensure the high-impedance state above 1.2 V, 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.

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Technical documentation

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Type Title Date
* Datasheet 2.5-V/3.3-V 16-Bit Bus Transceivers With 3-State Outputs datasheet (Rev. G) Apr. 04, 2002
Application notes An Overview of Bus-Hold Circuit and the Applications (Rev. B) Sep. 17, 2018
Selection guides Logic Guide (Rev. AB) Jun. 12, 2017
Application notes Understanding and Interpreting Standard-Logic Data Sheets (Rev. C) Dec. 02, 2015
Solution guides LOGIC Pocket Data Book (Rev. B) Jan. 16, 2007
Application notes Semiconductor Packing Material Electrostatic Discharge (ESD) Protection Jul. 08, 2004
More literature Logic Cross-Reference (Rev. A) Oct. 07, 2003
Application notes TI IBIS File Creation, Validation, and Distribution Processes Aug. 29, 2002
Application notes 16-Bit Widebus Logic Families in 56-Ball, 0.65-mm Pitch Very Thin Fine-Pitch BGA (Rev. B) May 22, 2002
Application notes Power-Up 3-State (PU3S) Circuits in TI Standard Logic Devices May 10, 2002
Selection guides Advanced Bus Interface Logic Selection Guide Jan. 09, 2001
Application notes Benefits & Issues of Migrating 5-V and 3.3-V Logic to Lower-Voltage Supplies (Rev. A) Sep. 08, 1999
Application notes Advanced Low-Voltage Technology Jul. 27, 1999

Design & development

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

Design tools & simulation

SIMULATION MODELS Download
SCEM239.ZIP (26 KB) - IBIS Model

CAD/CAE symbols

Package Pins Download
BGA MICROSTAR JUNIOR (ZQL) 56 View options
SSOP (DL) 48 View options
TSSOP (DGG) 48 View options
TVSOP (DGV) 48 View options

Ordering & quality

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Videos

Anatomy of a logic part number

Logic part numbers use a formulaic naming system to denote the device's functionality and features. This video reviews the components to a logic part's name.

Posted: 22-Jan-2018
Duration: 01:26

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