
SCES620 – DECEMBER 2004
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
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
Protocols
Bus Transceiver Split LVTTL Port Provides
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- 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)
description/ordering information
ORDERING INFORMATION
TA
PACKAGE
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
TSSOP DGG
Tape and reel
SN74VMEH22501ADGGR
VMEH22501A
40 C to 85 C
TVSOP DGV
Tape and reel
SN74VMEH22501ADGVR
VK501A
VFBGA GQL
Tape and reel
SN74VMEH22501AGQLR
VK501A
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines
are available at www.ti.com/sc/package.
Copyright
2004, Texas Instruments Incorporated
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.
Motorola is a trademark of Motorola, Inc.
OEC, UBT, and Widebus are trademarks of Texas Instruments.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
1OEBY
1A
1Y
GND
2A
2Y
V
CC
2OEBY
3A1
GND
LE
3A2
3A3
OE
GND
3A4
CLKBA
V
CC
3A5
3A6
GND
3A7
3A8
DIR
1OEAB
V
CC
1B
GND
BIAS V
CC
2B
V
CC
2OEAB
3B1
GND
V
CC
3B2
3B3
V
CC
GND
3B4
CLKAB
V
CC
3B5
3B6
GND
3B7
3B8
V
CC
DGG OR DGV PACKAGE
(TOP VIEW)
!"#$%&'#! ( )*$$+!' &( #" ,*-.)&'#! /&'+0
$#/*)'( )#!"#$% '# (,+)")&'#!( ,+$ '1+ '+$%( #" +2&( !('$*%+!'(
('&!/&$/3&$$&!'40 $#/*)'#! ,$#)+((!5 /#+( !#' !+)+((&$.4 !).*/+
'+('!5 #" &.. ,&$&%+'+$(0