74abt16821a NXP Semiconductors, 74abt16821a Datasheet - Page 6

• Manufacturer Part Number: 74abt16821a
• Description: 20-bit Bus-interface D-type Flip-flop; Positive-edge Trigger 3-state
• Manufacturer: NXP Semiconductors

Philips Semiconductors
AC CHARACTERISTICS
GND = 0 V, t
AC SETUP REQUIREMENTS
GND = 0V, t
AC WAVEFORMS
2002 Dec 13
SYMBOL
SYMBOL
nDx
f
t
t
t
t
t
t
t
t
t
t
t
t
nCP
nQx
CP
MAX
PLH
PHL
PZH
PZL
PHZ
PLZ
s
s
h
h
w
w
20-bit bus-interface D-type flip-flop;
positive-edge trigger (3-State)
(H)
(L)
(H)
(L)
(H)
(L)
Waveform 1. Propagation Delay, Clock Input to Output,
Clock Pulse Width, and Maximum Clock frequency
V
Waveform 2. Data Set-up and Hold Times
R
t
R
M
PH
t
w
Maximum clock frequency
Propagation delay
nCP to nQx
Output enable time
to HIGH and LOW level
Output disable time
from HIGH and LOW level
Set-up time, HIGH or LOW
nDx to nCP
Hold time, HIGH or LOW
nDx to nCP
nCP pulse width
HIGH or LOW
= t
(H)
= t
L
t
V
F
s
F
(H)
M
= 2.5ns, C
1/f
= 2.5 ns, C
MAX
V
V
t
V
M
h
PARAMETER
PARAMETER
M
V
(H)
M
M
t
w
(L)
L
L
= 50pF, R
= 50 pF, R
V
M
t
PLH
t
V
s
(L)
L
M
= 500
L
= 500
V
V
t
h
V
M
(L)
M
M
WAVEFORM
WAVEFORM
3.0V or V
3.0V or V
1
1
3
4
3
4
2
2
1
3.0V or V
V
whichever
is less
0V
V
whichever
is less
0V
whichever
is less
0V
OH
OL
SH00005
SH00006
CC
CC
CC
MIN
160
1.3
1.1
1.4
1.2
1.6
1.3
6
MIN
1.8
1.8
1.0
1.0
2.5
2.5
nOE
T
T
nQx
nOE
V
V
nQx
amb
amb
CC
CC
Waveform 3. 3-State Output Enable Time to HIGH Level
Waveform 4. 3-State Output Enable Time to LOW Level
TYP
250
= +5.0 V
2.4
2.0
2.5
2.3
3.2
2.3
= +5.0 V
= +25 C
= +25 C
and Output Disable Time from HIGH Level
and Output Disable Time from LOW Level
TYP
–0.9
–1.0
1.2
0.8
0.8
1.0
MAX
3.3
2.6
3.3
3.0
4.1
3.1
LIMITS
LIMITS
V
V
M
M
t
t
PZL
PZH
T
T
amb
amb
V
V
MIN
MIN
V
160
1.3
1.1
1.4
1.2
1.6
1.3
1.8
1.8
1.0
1.0
2.5
2.5
V
CC
M
CC
M
= –40 C to +85 C
= –40 C to +85 C
= +5.0 V 0.5 V
= +5.0 V 0.5V
74ABTH16821A
V
V
t
M
PLZ
t
74ABT16821A
M
PHZ
MAX
MAX
3.7
3.0
4.1
3.7
4.8
3.3
V
V
V
V
X
OL
OH
Y
Product data
3.0V or V
3.0V or V
whichever
is less
whichever
is less
0V
3.0V or V
0V
0V
0V
SH00007
UNIT
UNIT
SH00008
MHz
ns
ns
ns
ns
ns
ns
CC
CC
CC