Datasheet

SN54LVTH18514, SN54LVTH182514, SN74LVTH18514, SN74LVTH182514
3.3-V ABT SCAN TEST DEVICES
WITH 20-BIT UNIVERSAL BUS TRANSCEIVERS
SCBS670C – AUGUST 1996 – REVISED MARCH 1998
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
functional block diagram
A1
1D
C1
1D
C1
1D
C1
1D
C1
Boundary-Control
Register
Bypass Register
Identification
Register
Boundary-Scan Register
Instruction
Register
TAP
Controller
CLKENAB
LEAB
OEAB
CLKENBA
LEBA
OEBA
TDI
TMS
TCK
B1
TDO
V
CC
V
CC
1 of 20 Channels
CLKAB
CLKBA
62
31
29
35
30
36
63
1
64
2
3
34
32
33
V
CC
V
CC