SN74ALVCH16821
3.3-V 20-BIT BUS-INTERFACE FLIP-FLOP
WITH 3-STATE OUTPUTS
SCES037F – JULY 1995 – REVISED SEPTEMBER 2004
www.ti.com
ELECTRICAL CHARACTERISTICS
over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER
I
OH
= -100
µA
I
OH
= -4 mA
I
OH
= -6 mA
V
OH
I
OH
= -12 mA
I
OH
= -24 mA
I
OL
= 100
µA
I
OL
= 4 mA
V
OL
I
OL
= 6 mA
I
OL
= 12 mA
I
OL
= 24 mA
I
I
V
I
= V
CC
or GND
V
I
= 0.58 V
V
I
= 1.07 V
V
I
= 0.7 V
I
I(hold)
V
I
= 1.7 V
V
I
= 0.8 V
V
I
= 2 V
V
I
= 0 to 3.6
I
OZ
I
CC
∆I
CC
C
i
C
o
(1)
(2)
Control inputs
Data Inputs
Outputs
V
(2)
V
O
= V
CC
or GND
V
I
= V
CC
or GND, I
O
= 0
One input at V
CC
- 0.6 V, Other inputs at V
CC
or GND
V
I
= V
CC
or GND
V
O
= V
CC
or GND
TEST CONDITIONS
V
CC
1.65 V to 3.6 V
1.65 V
2.3 V
2.3 V
2.7 V
3V
3V
1.65 V to 3.6 V
1.65 V
2.3 V
2.3 V
2.7 V
3V
3.6 V
1.65 V
1.65 V
2.3 V
2.3 V
3V
3V
3.6 V
3.6 V
3.6 V
3 V to 3.6 V
3.3 V
3.3 V
3.5
6
7
25
-25
45
-45
75
-75
±500
±10
40
750
µA
µA
µA
pF
pF
µA
MIN
V
CC
- 0.2
1.2
2
1.7
2.2
2.4
2
0.2
0.45
0.4
0.7
0.4
0.55
±5
µA
V
V
TYP
(1)
MAX
UNIT
All typical values are at V
CC
= 3.3 V, T
A
= 25°C.
This is the bus-hold maximum dynamic current. It is the minimum overdrive current required to switch the input from one state to
another.
TIMING REQUIREMENTS
over recommended operating free-air temperature range (unless otherwise noted) (see Figure 1)
V
CC
= 1.8 V
MIN
f
clock
t
w
t
su
t
h
(1)
Clock frequency
Pulse duration, CLK high or low
Setup time, data before CLK↑
Hold time, data after CLK↑
This information was not available at the time of publication.
(1)
(1)
(1)
V
CC
= 2.5 V
±
0.2 V
MIN
3.3
4.4
0
MAX
150
V
CC
= 2.7 V
MIN
3.3
3.9
0
MAX
150
V
CC
= 3.3 V
±
0.3 V
MIN
3.3
3.4
0
MAX
150
UNIT
MHz
ns
ns
ns
MAX
(1)
4
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