SN54LVTH18652A Datasheet, PDF (33/38 Pages) Texas Instruments – 3.3-V ABT SCAN TEST DEVICES WITH 18-BIT TRANSCEIVERS AND REGISTERS

SN54LVTH18652A, SN54LVTH182652A, SN74LVTH18652A, SN74LVTH182652A
3.3-V ABT SCAN TEST DEVICES
WITH 18-BIT TRANSCEIVERS AND REGISTERS
SCBS312C – MARCH 1994 – REVISED JUNE 1997
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted) (continued)
PARAMETER
TEST CONDITIONS
Ci
VI = 3 V or 0
Cio
VO = 3 V or 0
Co
VO = 3 V or 0
† _{All typical values are at VCC = 3.3 V, TA = 25°C.}
SN54LVTH182652A
MIN TYP† MAX
4
10
8
SN74LVTH182652A
MIN TYP† MAX
4
10
8
UNIT
pF
pF
pF
timing requirements over recommended operating free-air temperature range (unless otherwise
noted) (normal mode) (see Figure 15)
fclock
tw
tsu
Clock frequency
Pulse duration
Setup time
th
Hold time
CLKAB or CLKBA
CLKAB or CLKBA high or low
A before CLKAB↑ or
B before CLKBA↑
A after CLKAB↑ or
B after CLKBA↑
SN54LVTH182652A
VCC = 3.3 V
± 0.3 V
VCC = 2.7 V
MIN MAX MIN MAX
0 120
0 100
3.8
5
2.9
3.1
0.8
0.2
SN74LVTH182652A
VCC = 3.3 V
± 0.3 V
VCC = 2.7 V
MIN MAX MIN MAX
0 120
0 100
3.8
5
2.9
3.1
0.8
0.2
UNIT
MHz
ns
ns
ns
timing requirements over recommended operating free-air temperature range (unless otherwise
noted) (test mode) (see Figure 15)
fclock Clock frequency
tw
Pulse duration
tsu
Setup time
th
Hold time
td
Delay time
tr
Rise time
TCK
TCK high or low
A, B, CLK, OEAB, OEBA or S
before TCK↑
TDI before TCK↑
TMS before TCK↑
A, B, CLK, OEAB, OEBA or S
after TCK↑
TDI after TCK↑
TMS after TCK↑
Power up to TCK↑
VCC power up
SN54LVTH182652A
VCC = 3.3 V
± 0.3 V
VCC = 2.7 V
MIN MAX MIN MAX
0
50
0
40
9.5
10.5
6.5
7
2.5
3.5
2.5
3.5
1.5
1
1.5
1
1.5
1
50
50
1
1
SN74LVTH182652A
VCC = 3.3 V
± 0.3 V
VCC = 2.7 V
MIN MAX MIN MAX
0
50
0
40
9.5
10.5
6.5
7
2.5
3.5
2.5
3.5
1.5
1
1.5
1
1.5
1
50
50
1
1
UNIT
MHz
ns
ns
ns
ns
µs
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design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.
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