Datasheet

SN74LVT245B
3.3-V ABT OCTAL BUS TRANSCEIVER
WITH 3-STATE OUTPUTS
SCES004H − JANUARY 1995 − REVISED SEPTEMBER 2003
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP
†
MAX UNIT
V
IK
V
CC
= 2.7 V, I
I
= −18 mA −1.2 V
V
CC
= 2.7 V to 3.6 V, I
OH
= −100 μA V
CC
−0.2
V
OH
V
CC
= 2.7 V, I
OH
= −8 mA 2.4
V
V
OH
V
CC
= 3 V, I
OH
= −32 mA 2
V
V 27V
I
OL
= 100 μA 0.2
V
CC
= 2.7 V
I
OL
= 24 mA 0.5
V
OL
I
OL
= 16 mA 0.4
V
V
OL
V
CC
= 3 V
I
OL
= 32 mA 0.5
V
V
CC
3
V
I
OL
= 64 mA 0.55
Control inputs
V
CC
= 3.6 V, V
I
= V
CC
or GND ±1
Control inputs
V
CC
= 0 or 3.6 V, V
I
= 5.5 V 10
I
I
V
I
= 5.5 V 20
μA
I
I
A or B ports
‡
V
CC
= 3.6 V
V
I
= V
CC
1
μA
A
or
B
ports
V
CC
3.6
V
V
I
= 0 −5
I
off
V
CC
= 0, V
I
or V
O
= 0 to 4.5 V ±100 μA
I
OZH
V
CC
= 3.6 V, V
O
= 3 V 5 μA
I
OZL
V
CC
= 3.6 V, V
O
= 0.5 V −5 μA
I
OZPU
V
CC
= 0 to 1.5 V, V
O
= 0.5 V to 3 V, OE = don’t care ±100 μA
I
OZPD
V
CC
= 1.5 V to 0, V
O
= 0.5 V to 3 V, OE = don’t care ±100 μA
V
CC
=
3.6 V,
Outputs high 0.19
I
CC
V
CC
=
3
.
6
V
,
I
O
= 0,
Outputs low 5
mA
I
CC
I
O
0,
V
I
= V
CC
or GND
Outputs disabled 0.19
mA
ΔI
CC
§
V
CC
= 3 V to 3.6 V, One input at V
CC
− 0.6 V,
Other inputs at V
CC
or GND
0.2 mA
C
i
V
I
= 3 V or 0 4 pF
C
io
V
O
= 3 V or 0 9 pF
†
All typical values are at V
CC
= 3.3 V, T
A
= 25°C.
‡
Unused terminals are at V
CC
or GND.
§
This is the increase in supply current for each input that is at the specified TTL-voltage level, rather than V
CC
or GND.
switching characteristics over recommended operating free-air temperature range, C
L
= 50 pF
(unless otherwise noted) (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
V
CC
= 3.3 V
± 0.3 V
V
CC
= 2.7 V
UNIT
PARAMETER
(INPUT) (OUTPUT)
MIN TYP
†
MAX MIN MAX
UNIT
t
PLH
AorB
BorA
1.2 2.3 3.5 4
ns
t
PHL
A or B B or A
1.2 2.1 3.5 4
ns
t
PZH
OE
AorB
1.3 3.2 5.5 7.1
ns
t
PZL
OE
A or B
1.7 3.4 5.5 6.5
ns
t
PHZ
OE
AorB
2.2 3.5 5.9 6.5
ns
t
PLZ
OE
A or B
2.2 3.4 5 5.1
ns
†
All typical values are at V
CC
= 3.3 V, T
A
= 25°C.