Datasheet

SN54LVTH18502A, SN54LVTH182502A, SN74LVTH18502A, SN74LVTH182502A
3.3-V ABT SCAN TEST DEVICES
WITH 18-BIT UNIVERSAL BUS TRANSCEIVERS
SCBS668C − JULY 1996 − REVISED JUNE 2004
29
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
switching characteristics over recommended operating free-air temperature range (unless
otherwise noted) (normal mode) (see Figure 14)
SN54LVTH18502A SN74LVTH18502A
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
V
CC
= 3.3 V
± 0.3 V
V
CC
= 2.7 V
V
CC
= 3.3 V
± 0.3 V
V
CC
= 2.7 V
UNIT
(INPUT)
(OUTPUT)
MIN MAX MIN MAX MIN MAX MIN MAX
f
max
CLKAB or CLKBA 100 80 100 80 MHz
t
PLH
AorB
BorA
1.1 5.1 5.8 1.5 4.9 5.6
ns
t
PHL
A or B B or A
1.3 5.2 5.8 1.5 4.9 5.6
ns
t
PLH
CLKAB or CLKBA
BorA
1.1 6.7 7.2 1.5 5.8 6.8
ns
t
PHL
CLKAB or CLKBA B or A
1.5 6.7 7.2 1.5 5.8 6.8
ns
t
PLH
LEAB or LEBA
BorA
1.5 7.8 9.3 1.5 7.4 8.4
ns
t
PHL
LEAB or LEBA B or A
1.3 6.7 7 1.5 5.7 6.4
ns
t
PZH
OEAB or OEBA
BorA
1 8.2 8.8 1.5 7.1 8.3
ns
t
PZL
OEAB or OEBA
B or A
1.5 8.1 9.1 1.5 7.1 8.3
ns
t
PHZ
OEAB or OEBA
BorA
2.3 9.3 10 2.5 7.8 8.4
ns
t
PLZ
OEAB or OEBA
B or A
2 9 9.2 2.5 7.8 8.4
ns
switching characteristics over recommended operating free-air temperature range (unless
otherwise noted) (test mode) (see Figure 14)
SN54LVTH18502A SN74LVTH18502A
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
V
CC
= 3.3 V
± 0.3 V
V
CC
= 2.7 V
V
CC
= 3.3 V
± 0.3 V
V
CC
= 2.7 V
UNIT
(INPUT)
(OUTPUT)
MIN MAX MIN MAX MIN MAX MIN MAX
f
max
TCK 50 40 50 40 MHz
t
PLH
TCK↓
AorB
1.6 15 18 2.5 14 17
ns
t
PHL
TCK↓ A or B
2.5 15 18 2.5 14 17
ns
t
PLH
TCK↓
TDO
1 6 7 1 5.5 6.5
ns
t
PHL
TCK↓ TDO
1 8 9 1.5 6.5 7.5
ns
t
PZH
TCK↓
AorB
3 19 21 4 17 20
ns
t
PZL
TCK↓ A or B
3.2 18 21 4 17 20
ns
t
PZH
TCK↓
TDO
1 6 7 1 5.5 6.5
ns
t
PZL
TCK↓ TDO
1.5 6 7 1.5 5.5 6.5
ns
t
PHZ
TCK↓
AorB
2.6 19 21 4 18 20
ns
t
PLZ
TCK↓ A or B
3.6 18 19.5 4 17 18.5
ns
t
PHZ
TCK↓
TDO
1.5 7.5 9 1.5 7 8.5
ns
t
PLZ
TCK
↓
TDO
1.5 7.5 8.5 1.5 7 8
ns