SN74VMEH22501_10 Datasheet, PDF (1/31 Pages) Texas Instruments – 8-BIT UNIVERSAL BUS TRANSCEIVER AND TWO 1-BIT BUS TRANSCEIVERS WITH SPLIT LVTTL PORT, FEEDBACK PATH, AND 3-STATE OUTPUTS

SN74VMEH22501
www.ti.com
SCES357F – JULY 2001 – REVISED FEBRUARY 2010
8-BIT UNIVERSAL BUS TRANSCEIVER AND TWO 1-BIT BUS TRANSCEIVERS
WITH SPLIT LVTTL PORT, FEEDBACK PATH, AND 3-STATE OUTPUTS
Check for Samples: SN74VMEH22501
FEATURES
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• Member of the Texas Instruments Widebus™
Family
• UBT™ Transceiver Combines D-Type Latches
and D-Type Flip-Flops for Operation in
Transparent, Latched, or Clocked Modes
• OEC™ Circuitry Improves Signal Integrity and
Reduces Electromagnetic Interference (EMI)
• Compliant With VME64, 2eVME, and 2eSST
Protocol
• Bus Transceiver Split LVTTL Port Provides a
Feedback Path for Control and Diagnostics
Monitoring
• I/O Interfaces Are 5-V Tolerant
• B-Port Outputs (–48 mA/64 mA)
• Y and A-Port Outputs (–12 mA/12 mA)
• I_off, Power-Up 3-State, and BIAS V_CC Support
Live Insertion
• Bus Hold on 3A-Port Data Inputs
• 26-Ω Equivalent Series Resistor on 3A Ports
and Y Outputs
• Flow-Through Architecture Facilitates Printed
Circuit Board Layout
• Distributed V_CC and GND Pins Minimize
High-Speed Switching Noise
• Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
• ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
– 1000-V Charged-Device Model (C101)
DGG OR DGV PACKAGE
(TOP VIEW)
DESCRIPTION/ORDERING INFORMATION
The SN74VMEH22501 8-bit universal bus transceiver has two integral 1-bit three-wire bus transceivers and is
designed for 3.3-V V_CC operation with 5-V tolerant inputs. The UBT™ transceiver allows transparent, latched, and
flip-flop modes of data transfer, and the separate LVTTL input and outputs on the bus transceivers provide a
feedback path for control and diagnostics monitoring. This device provides a high-speed interface between cards
operating at LVTTL logic levels and VME64, VME64x, or VME320⁽¹⁾ backplane topologies.
(1) VME320 is a patented backplane construction by Arizona Digital, Inc.
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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