SCES625A February   2005  – November 2015 SN74VMEH22501A-EP

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Description (continued)
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1  Absolute Maximum Ratings
    2. 7.2  ESD Ratings
    3. 7.3  Recommended Operating Conditions
    4. 7.4  Thermal Information
    5. 7.5  Electrical Characteristics
    6. 7.6  Live-Insertion Specifications
    7. 7.7  Timing Requirements for UBT Transceiver (I Version)
    8. 7.8  Switching Characteristics for Bus Transceiver Function (I Version)
    9. 7.9  Switching Characteristics for Bus Transceiver Function (M Version)
    10. 7.10 Switching Characteristics for UBT Transceiver (I Version)
    11. 7.11 Switching Characteristics for UBT Transceiver (M Version)
    12. 7.12 Switching Characteristics for Bus Transceiver Function (I Version)
    13. 7.13 Switching Characteristics for UBT (I Version)
    14. 7.14 Switching Characteristics for Bus Transceiver Function (I Version)
    15. 7.15 Switching Characteristics for UBT (I Version)
    16. 7.16 Skew Characteristics for Bus Transceiver (I Version)
    17. 7.17 Skew Characteristics for Bus Transceiver (M Version)
    18. 7.18 Skew Characteristics for UBT (I Version)
    19. 7.19 Skew Characteristics for UBT (M Version)
    20. 7.20 Skew Characteristics for Bus Transceiver (I Version)
    21. 7.21 Skew Characteristics for UBT (I Version)
    22. 7.22 Skew Characteristics for Bus Transceiver (I Version)
    23. 7.23 Skew Characteristics for UBT (I Version)
    24. 7.24 Maximum Data Transfer Rates
    25. 7.25 Typical Characteristics
  8. 8 Parameter Measurement Information
    1. 8.1 Distributed-Load Backplane Switching Characteristics
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Functional Description for Two 1-Bit Bus Transceivers
      2. 9.3.2 Functional Description for 8-Bit UBT Transceiver
      3. 9.3.3 VMEbus Summary
    4. 9.4 Device Functional Modes
      1. 9.4.1 Direction Control Model (1-Bit Transceiver)
      2. 9.4.2 Direction Control for 8 Bit UBT
      3. 9.4.3 Latch Storage and Clock Storage
  10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
      3. 10.2.3 Application Curves
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Device Support
      1. 13.1.1 Third-Party Products Disclaimer
    2. 13.2 Related Links
    3. 13.3 Community Resources
    4. 13.4 Trademarks
    5. 13.5 Electrostatic Discharge Caution
    6. 13.6 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

6 Pin Configuration and Functions

DGG or DGV Package
48-Pin TSSOP or TVSOP
Top View
SN74VMEH22501A-EP po_dgg_ces357.gif

Pin Functions

PIN I/O DESCRIPTION
NAME NO.
1OEBY 1 I Active low control output for 1Y bus
1A 2 I Data in to 1B
1Y 3 O Data out
GND 4 — Ground
2A 5 I Data in to 2B
2Y 6 O Data out
VCC 7 I Power supply input for internal circuits
2OEBY 8 I Active low control output for 2Y bus
3A1 9 I/O Data in/out
GND 10 — Ground
LE 11 I Latch Enable pin for UBT
3A2 12 I/O Data in/out
3A3 13 I/O Data in/out
OE 14 I Active low enable pin for UBT
GND 15 — Ground
3A4 16 I/O Data in/out
CLKBA 17 I Clock for 3B data to 3A bus
VCC 18 I Power supply input for internal circuits
3A5 19 I/O Data in/out
3A6 20 I/O Data in/out
GND 21 — Ground
3A6 22 I/O Data in/out
3A8 23 I/O Data in/out
DIR 24 — Direction control for UBT
VCC 25 I Power supply input for internal circuits
3B8 26 I/O Data in/out
3B7 27 I/O Data in/out
GND 28 — Ground
3B6 29 I/O Data in/out
3B5 30 I/O Data in/out
VCC 31 I Power supply input for internal circuits
CLKAB 32 I Clock for 3A data to 3B bus
3B4 33 I/O Data in/out
GND 34 — Ground
VCC 35 I Power supply input for internal circuits
3B3 36 I/O Data in/out
3B2 37 I/O Data in/out
VCC 38 I Power supply input for internal circuits
GND 39 — Ground
3B1 40 I/O Data in/out
2OEAB 41 I Active high control output for 2B bus
VCC 42 I Power supply input for internal circuits
2B 43 I/O Data in/out
BIAS VCC 44 I Power supply input for internal circuits
GND 45 — Ground
1B 46 I/O Data in/out
VCC 47 I Power supply input for internal circuits
1OEAB 48 I Active high control output for 1B bus