480227 Datasheet, PDF (779/794 Pages) Texas Instruments – Pocket Data Book

162721
3.3-V 20-BIT FLIP-FLOP WITH 3-STATE OUTPUTS
● SN74ALVCH162721: Output Ports Have Equivalent 26-Ω Series Resistors
1
OE
56
CLK
29
CLKEN
55
D1
Logic Diagram
CE
C1
1D
2
Q1
To 19 Other Channels
FUNCTION TABLE
(each flip-flop)
INPUTS
OE CLKEN CLK
D
L
H
X
X
L
L
↑
H
L
L
↑
L
L
L L or H X
H
X
X
X
OUTPUT
Q
Q0
H
L
Q0
Z
ELECTRICAL CHARACTERISTICS AND RECOMMENDED OPERATING CONDITIONS
PARAMETER
MAX or MIN
ALVCH
3V
UNIT
ICC
MAX
0.04 mA
IOH
MAX
-12 mA
IOL
MAX
12
mA
TIMING REQUREMENTS AND SWITCHING CHARACTERISTICS
PARAMETER
INPUT
OUTPUT
MAX or MIN
fmax
tw Pulse duration CLK high or low
tsu Setup time
Data before CLK ↑
CLKEN before CLK ↑
th Hold time
Data after CLK ↑
CLKEN after CLK ↑
tPLH
CLK
Q
tPHL
tPZH
OE
Q
tPZL
tPHZ
OE
Q
tPLZ
UNIT fmax : MHz other : ns
MIN
MIN
MIN
MIN
MIN
MIN
MAX
MAX
MAX
ALVCH
3V
150
3.3
3.1
2.7
0
0
5.3
5.3
5.8
5.8
5
5
774
: OBSOLETED or NOT RECOMMENDED NEW DESIGNS