Datasheet
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Electrical Characteristics
Timing Requirements
SN54LVC646A, SN74LVC646A
OCTAL BUS TRANSCEIVERS AND REGISTERS
WITH 3-STATE OUTPUTS
SCAS302J – JANUARY 1993 – REVISED AUGUST 2005
over recommended operating free-air temperature range (unless otherwise noted)
SN54LVC646A SN74LVC646A
PARAMETER TEST CONDITIONS V
CC
UNIT
MIN TYP
(1)
MAX MIN TYP
(1)
MAX
1.65 V to 3.6 V V
CC
– 0.2
I
OH
= –100 µ A
2.7 V to 3.6 V V
CC
– 0.2
I
OH
= –4 mA 1.65 V 1.2
V
OH
I
OH
= –8 mA 2.3 V 1.7 V
2.7 V 2.2 2.2
I
OH
= –12 mA
3 V 2.4 2.4
I
OH
= –24 mA 3 V 2.2 2.2
1.65 V to 3.6 V 0.2
I
OL
= 100 µ A
2.7 V to 3.6 V 0.2
I
OL
= 4 mA 1.65 V 0.45
V
OL
V
I
OL
= 8 mA 2.3 V 0.7
I
OL
= 12 mA 2.7 V 0.4 0.4
I
OL
= 24 mA 3 V 0.55 0.55
Control
I
I
V
I
= 0 to 5.5 V 3.6 V ± 5 ± 5 µ A
inputs
I
off
V
I
or V
O
= 5.5 V 0 ± 10 µ A
I
OZ
(2)
V
O
= 0 to 5.5 V 3.6 V ± 15 ± 10 µ A
V
I
= V
CC
or GND 10 10
I
CC
I
O
= 0 3.6 V µ A
3.6 V ≤ V
I
≤ 5.5 V
(3)
10 10
One input at V
CC
– 0.6 V,
∆ I
CC
2.7 V to 3.6 V 500 500 µ A
Other inputs at V
CC
or GND
Control
C
i
V
I
= V
CC
or GND 3.3 V 4.5 4.5 pF
inputs
A or B
C
io
V
O
= V
CC
or GND 3.3 V 7.5 7.5 pF
port
(1) All typical values are at V
CC
= 3.3 V, T
A
= 25 ° C.
(2) For I/O ports, the parameter I
OZ
includes the input leakage current.
(3) This applies in the disabled state only.
over recommended operating free-air temperature range (unless otherwise noted) (see Figure 2 )
SN54LVC646A
V
CC
= 3.3 V
V
CC
= 2.7 V UNIT
± 0.3 V
MIN MAX MIN MAX
f
clock
Clock frequency 150 150 MHz
t
w
Pulse duration 3.3 3.3 ns
t
su
Setup time, data before CLK ↑ 1.6 1.5 ns
t
h
Hold time, data after CLK ↑ 1.7 1.7 ns
6