Datasheet

SN54LVT8996, SN74LVT8996
3.3-V 10-BIT ADDRESSABLE SCAN PORTS
MULTIDROP-ADDRESSABLE IEEE STD 1149.1 (JTAG) TAP TRANSCEIVERS
SCBS686A – APRIL 1997 – REVISED DECEMBER 1999
39
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
switching characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (continued) (see Figure 24)
SN74LVT8996
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
V
CC
= 3.3 V
± 0.3 V
V
CC
= 2.7 V
UNIT
MIN MAX MIN MAX
t
PZH
†
BYP↓
PTDO
1.5 9 1.5 10.6
ns
t
PZL
BYP↓
PTDO
1.5 10.1 1.5 11.9
ns
t
PZH
‡
BYP↓
STDO
1.5 8.1 1.5 9.3
ns
t
PZL
BYP↓
STDO
1.5 9.2 1.5 10.7
ns
t
PZH
†
PTCK↓
PTDO 4 14.5 4 16.8 ns
t
PZH
‡
PTCK↓
STDO
4 15.8 4 18.4
ns
t
PZL
PTCK↓
STDO
4 16.4 4 19.1
ns
t
PHZ
†
BYP↑
PTDO
1.5 8.3 1.5 9.3
ns
t
PLZ
BYP↑
PTDO
1.5 7.7 1.5 8.3
ns
t
PHZ
‡
BYP↑
STDO
1.5 7.3 1.5 8.5
ns
t
PLZ
BYP↑
STDO
1.5 7.4 1.5 7.1
ns
t
PHZ
†
PTCK↓
PTDO
3 14 3 16.6
ns
t
PLZ
PTCK↓
PTDO
3 13.9 3 15.5
ns
t
PHZ
‡
PTCK↓
STDO
3.5 16.9 3.5 18.3
ns
t
PLZ
§
PTCK↓
STDO
3.5 13 3.5 15.1
ns
t
PHZ
†
PTRST↓
PTDO
3.5 18.3 3.5 21.6
ns
t
PLZ
PTRST↓
PTDO
3.5 19.3 3.5 19.6
ns
t
PHZ
‡
PTRST↓
STDO
4.5 18.2 4.5 21.4
ns
t
PLZ
PTRST↓
STDO
4.5 20.6 4.5 23.4
ns
†
In most applications, the node to which PTDO is connected has a pullup resistor. In such cases, this parameter is not significant.
‡
In most applications, the node to which STDO is connected has a pullup resistor. In such cases, this parameter is not significant.
§
This parameter applies only in case of protocol result HARD ERROR.