Datasheet
SN54LVTH18646A, SN54LVTH182646A, SN74LVTH18646A, SN74LVTH182646A
3.3-V ABT SCAN TEST DEVICES
WITH 18-BIT TRANSCEIVERS AND REGISTERS
SCBS311D – MARCH 1994 – REVISED JUNE 1997
32
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54LVTH182646A SN74LVTH182646A
UNIT
PARAMETER
TEST
CONDITIONS
MIN TYP
†
MAX MIN TYP
†
MAX
UNIT
V
IK
V
CC
= 2.7 V, I
I
= –18 mA –1.2 –1.2 V
V
CC
= MIN to MAX
‡
, I
OH
= –100 µA V
CC
–0.2 V
CC
–0.2
V
CC
= 2.7 V, I
OH
= –3 mA 2.4 2.4
V
OH
I
OH
= –8 mA
A port, TDO
2.4 2.4
V
V
OH
V
CC
=3V
I
OH
= –24 mA 2
V
V
CC
=
3
V
I
OH
= –32 mA 2
I
OH
= –12 mA B port 2 2
V
CC
=27V
I
OL
= 100 µA 0.2 0.2
V
CC
=
2
.
7
V
I
OL
= 24 mA 0.5 0.5
I
OL
= 16 mA
A
p
ort TDO
0.4 0.4
V
OL
I
OL
= 32 mA
A
port
,
TDO
0.5 0.5
V
V
CC
= 3 V
I
OL
= 48 mA 0.55
I
OL
= 64 mA 0.55
I
OL
= 12 mA B port 0.8 0.8
V
CC
= 3.6 V, V
I
= V
CC
or GND
CLK
,
DIR
,
±1 ±1
V
CC
= 0 or MAX
‡
, V
I
= 5.5 V
CLK,
DIR,
S, TCK
10 10
V
I
= 5.5 V
OE TDI
50 50
I
I
V
I
= V
CC
OE, TDI,
TMS
1 1
µA
I
I
V
CC
=36V
V
I
= 0
TMS
–25 –100 –25 –100
µ
A
V
CC
=
3
.
6
V
V
I
= 5.5 V
§
20 20
V
I
= V
CC
A or B ports
§
1 1
V
I
= 0 –5 –5
I
off
V
CC
= 0, V
I
or V
O
= 0 to 4.5 V ±100 µA
I
¶
V
CC
=3V
V
I
= 0.8 V
AorB
p
orts
75 150 500 75 150 500
µA
I
I(hold)
¶
V
CC
=
3
V
V
I
= 2 V
A
or
B
ports
–75 –150 –500 –75 –150 –500
µ
A
I
OZH
V
CC
= 3.6 V, V
O
= 3 V TDO 1 1 µA
I
OZL
V
CC
= 3.6 V, V
O
= 0.5 V TDO –1 –1 µA
I
OZPU
V
CC
= 0 to 1.5 V, V
O
= 0.5 V or 3 V TDO ±50 ±50 µA
I
OZPD
V
CC
= 1.5 V to 0, V
O
= 0.5 V or 3 V TDO ±50 ±50 µA
V
CC
=
3.6 V,
Outputs high 0.6 2 0.6 2
I
CC
V
CC
=
3
.
6
V
,
I
O
= 0,
Outputs low 20 24 20 24
mA
V
I
= V
CC
or GND
Outputs disabled 0.6 2 0.6 2
∆I
CC
#
V
CC
= 3 V to 3.6 V, One input at V
CC
– 0.6 V,
Other inputs at V
CC
or GND
0.5 0.5 mA
C
i
V
I
= 3 V or 0 4 4 pF
C
io
V
O
= 3 V or 0 10 10 pF
C
o
V
O
= 3 V or 0 8 8 pF
†
All typical values are at V
CC
= 3.3 V, T
A
= 25°C.
‡
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
§
Unused pins at V
CC
or GND
¶
The parameter I
I(hold)
includes the off-state ouput leakage current.
#
This is the increase in supply current for each input that is at the specified TTL voltage level rather than V
CC
or GND.
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change or discontinue these products without notice.