Datasheet

SN74ALVC245
OCTAL BUS TRANSCEIVER
WITH 3-STATE OUTPUTS
SCES271A – APRIL 1999 – REVISED MAY 1999
2–82
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER TEST CONDITIONS
V
CC
MIN TYP
†
MAX UNIT
I
OH
= –100 µA 1.65 V to 3.6 V V
CC
–0.2
I
OH
= –4 mA 1.65 V 1.2
I
OH
= –6 mA 2.3 V 2
V
OH
2.3 V 1.7
V
I
OH
= –12 mA
2.7 V 2.2
3 V 2.4
I
OH
= –24 mA 3 V 2
I
OL
= 100 µA 1.65 V to 3.6 V 0.2
I
OL
= 4 mA 1.65 V 0.45
I
OL
= 6 mA 2.3 V 0.4
V
OL
2.3 V 0.7
V
I
OL
= 12 mA
2.7 V 0.4
I
OL
= 24 mA 3 V 0.55
I
I
V
I
= V
CC
or GND 3.6 V ±5 µA
I
OZ
‡
V
O
= V
CC
or GND 3.6 V ±10 µA
I
CC
V
I
= V
CC
or GND, I
O
= 0 3.6 V 10 µA
∆I
CC
One input at V
CC
– 0.6 V, Other inputs at V
CC
or GND 3 V to 3.6 V 750 µA
C
i
Control inputs V
I
= V
CC
or GND 3.3 V 4.5 pF
C
io
A or B ports V
O
= V
CC
or GND 3.3 V 11.5 pF
†
All typical values are at V
CC
= 3.3 V, T
A
= 25°C.
‡
For I/O ports, the parameter I
OZ
includes the input leakage current.
switching characteristics over recommended operating free-air temperature range (unless
otherwise noted) (see Figures 1 through 3)
PARAMETER
FROM TO
V
CC
= 1.8 V
± 0.15 V
V
CC
= 2.5 V
± 0.2 V
V
CC
= 2.7 V
V
CC
= 3.3 V
± 0.3 V
UNIT
(INPUT) (OUTPUT)
MIN MAX MIN MAX MIN MAX MIN MAX
t
pd
A or B
B or A
1.5 6 1 3.5 3.6 1.3 3.4 ns
t
en
OE
A or B
3.4 8.6 2 6 6.3 1.6 5.5 ns
t
dis
OE
A or B
2.7 8 1 4.8 5.3 1.7 5.5 ns
operating characteristics, T
A
= 25°C
V
CC
= 1.8 V V
CC
= 2.5 V V
CC
= 3.3 V
PARAMETER TEST CONDITIONS
TYP TYP TYP
UNIT
Power dissipation capacitance
Outputs enabled 25 27 30
C
pd
per transceiver
Outputs disabled
C
L
= 0, f = 10 MHz
0 0 0
pF