Philips Semiconductors
Product specification
10-bit D-type flip-flop; positive-edge trigger
(3-State)
74ABT821
DC ELECTRICAL CHARACTERISTICS
LIMITS
T
= –40°C
to +85°C
amb
SYMBOL
PARAMETER
TEST CONDITIONS
T
amb
= +25°C
UNIT
Min
Typ
Max
Min
Max
V
Input clamp voltage
V
V
V
V
V
= 4.5V; I = –18mA
–0.9
2.9
–1.2
–1.2
V
V
V
V
V
IK
CC
CC
CC
CC
CC
IK
= 4.5V; I = –3mA; V = V or V
2.5
3.0
2.0
2.5
3.0
2.0
OH
I
IL
IH
V
OH
High-level output voltage
= 5.0V; I = –3mA; V = V or V
3.4
OH
I
IL
IH
= 4.5V; I = –32mA; V = V or V
IH
2.4
OH
I
IL
V
OL
Low-level output voltage
Power-up output low
= 4.5V; I = 64mA; V = V or V
IH
0.42
0.55
0.55
0.55
0.55
OL
I
IL
V
RST
V
CC
= 5.5V; I = 1mA; V = GND or V
CC
0.13
V
O
I
3
voltage
I
Input leakage current
V
V
= 5.5V; V = GND or 5.5V
±0.01
±5.0
±1.0
±1.0
µA
µA
I
CC
I
I
Power-off leakage current
= 0.0V; V or V 4.5V
±100
±100
≤
I
OFF
CC
O
Power-up/down 3-State
output current
V
CC
V
OE
= 2.0V; V = 0.5V; V = GND or V
;
O
I
CC
I
/I
±5.0
±50
±50
µA
PU PD
4
= V
CC
I
3-State output High current
3-State output Low current
Output High leakage current
V
V
V
V
V
V
V
= 5.5V; V = 2.7V; V = V or V
5.0
–5.0
5.0
50
–50
50
50
–50
50
µA
µA
µA
mA
µA
mA
OZH
CC
CC
CC
CC
CC
CC
CC
O
I
IL
IH
I
= 5.5V; V = 0.5V; V = V or V
O I IL
OZL
IH
I
= 5.5V; V = 5.5V; V = GND or V
O I
CEX
CC
1
I
O
Output current
= 5.5V; V = 2.5V
–50
–100
0.5
–180
250
38
–50
–180
250
38
O
I
= 5.5V; Outputs High, V = GND or V
CCH
I
CC
I
Quiescent supply current
= 5.5V; Outputs Low, V = GND or V
25
CCL
I
CC
= 5.5V; Outputs 3-State;
I
0.5
0.5
250
1.5
250
1.5
µA
CCZ
V = GND or V
I
CC
Additional supply current per
V
CC
= 5.5V; one input at 3.4V,
∆I
mA
CC
2
input pin
other inputs at V or GND
CC
NOTES:
1. Not more than one output should be tested at a time, and the duration of the test should not exceed one second.
2. This is the increase in supply current for each input at 3.4V.
3. For valid test results, data must not be loaded into the flip-flops (or latches) after applying the power.
4. This parameter is valid for any V between 0V and 2.1V with a transition time of up to 10msec. For V = 2.1V to V = 5V " 10%, a
CC
CC
CC
transition time of up to 100µsec is permitted.
AC CHARACTERISTICS
GND = 0V, t = t = 2.5ns, C = 50pF, R = 500Ω
R
F
L
L
LIMITS
Max
T
= -40 to
+85 C
= +5.0V ±0.5V
amb
o
T
V
= +25 C
amb
CC
o
SYMBOL
PARAMETER
WAVEFORM
UNIT
= +5.0V
V
CC
Min
Typ
Typ
Max
f
Maximum clock frequency
1
1
125
185
125
ns
ns
MAX
t
t
Propagation delay
CP to Qn
2.1
2.8
4.1
4.6
5.6
6.2
2.1
2.8
6.2
6.7
PLH
PHL
t
t
Output enable time
to High and Low level
3
4
1.0
2.2
3.0
4.1
4.5
5.6
1.0
2.2
5.3
6.3
PZH
PZL
ns
ns
t
t
Output disable time
from High and Low level
3
4
2.7
2.8
4.7
4.6
6.2
6.1
2.7
2.8
6.7
6.5
PHZ
PLZ
4
1995 Sep 06