SN54ABTH18502A, SN54ABTH182502A, SN74ABTH18502A, SN74ABTH182502A
SCAN TEST DEVICES
WITH 18-BIT UNIVERSAL BUS TRANSCEIVERS
SCBS164E – AUGUST 1993 – REVISED DECEMBER 1996
Members of the Texas Instruments
One Boundary-Scan Cell Per I/O
SCOPE Family of Testability Products
Architecture Improves Scan Efficiency
Members of the Texas Instruments
Widebus Family
SCOPE Instruction Set
– IEEE Standard 1149.1-1990 Required
Instructions and Optional CLAMP and
HIGHZ
– Parallel-Signature Analysis at Inputs
– Pseudo-Random Pattern Generation
From Outputs
– Sample Inputs/Toggle Outputs
– Binary Count From Outputs
– Device Identification
Compatible With the IEEE Standard
1149.1-1990 (JTAG) Test Access Port
and Boundary-Scan Architecture
UBT (Universal Bus Transceiver)
Combines D-Type Latches and D-Type
Flip-Flops for Operation in Transparent,
Latched, or Clocked Mode
Bus Hold on Data Inputs Eliminates the
Need for External Pullup Resistors
– Even-Parity Opcodes
Packaged in 64-Pin Plastic Thin Quad Flat
(PM) Packages Using 0.5-mm
Center-to-Center Spacings and 68-Pin
Ceramic Quad Flat (HV) Packages Using
25-mil Center-to-Center Spacings
B-Port Outputs of ’ABTH182502A Devices
Have Equivalent 25-Ω Series Resistors, So
No External Resistors Are Required
State-of-the-Art EPIC-ΙΙB BiCMOS Design
SN54ABTH18502A, SN54ABTH182502A . . . HV PACKAGE
(TOP VIEW)
9
8
7
6 5 4 3 2 1 68 67 66 65 64 63 62 61
1A3
1A4
1A5
GND
1A6
1A7
1A8
1A9
NC
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
60 1B4
59 1B5
58 1B6
57 GND
56 1B7
55 1B8
54 1B9
53
V
CC
52 NC
51 2B1
50 2B2
49 2B3
48 2B4
47 GND
46 2B5
45 2B6
44 2B7
V
CC
2A1
2A2
2A3
GND
2A4
2A5
2A6
27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43
NC – No internal connection
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.
SCOPE, Widebus, UBT, and EPIC-ΙΙB are trademarks of Texas Instruments Incorporated.
Copyright 1996, Texas Instruments Incorporated
On products compliant to MIL-PRF-38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
UNLESS OTHERWISE NOTED this document contains PRODUCTION
DATA information current as of publication date. Products conform to
specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all
parameters.
1
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