74HC283 Philips, 74HC283 Datasheet - Page 7

• Manufacturer Part Number: 74HC283
• Description: 4-bit binary full adder with fast carry
• Manufacturer: Philips

Philips Semiconductors
DC CHARACTERISTICS FOR 74HCT
For the DC characteristics see
Output capability: standard
I
Note to HCT types
The value of additional quiescent supply current ( I
To determine I
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; t
December 1990
CC
INPUT
C
B
B
B
SYMBOL PARAMETER
t
t
t
t
t
t
t
t
PHL
PHL
PHL
PHL
PHL
PHL
PHL
THL
2
1
4
4-bit binary full adder with fast carry
IN
, A
, A
category: MSI
/ t
/ t
/ t
/ t
/ t
/ t
/ t
/ t
2
4
TLH
PLH
PLH
PLH
PLH
PLH
PLH
PLH
, A
, A
1
3
, B
propagation delay
propagation delay
propagation delay
propagation delay
propagation delay
propagation delay
propagation delay
output transition time
r
3
= t
C
C
C
C
A
C
A
n
n
IN
IN
IN
IN
IN
CC
f
or B
or B
= 6 ns; C
to
to
to
to
to C
per input, multiply this value by the unit load coefficient shown in the table below.
n
n
1
2
3
4
OUT
to
to C
UNIT LOAD COEFFICIENT
1.50
1.00
0.40
0.50
L
n
OUT
= 50 pF
“74HC/HCT/HCU/HCMOS Logic Family Specifications”
min.
18
25
27
31
29
27
28
typ.
7
25
31
43
46
53
49
46
48
15
max. min.
CC
) for a unit load of 1 is given in the family specifications.
T
74HCT
amb
7
40 to 85
( C)
39
54
58
66
61
58
60
19
max.
min.
40 to 125
47
65
69
80
74
69
72
22
max.
.
ns
ns
ns
ns
ns
ns
ns
ns
UNIT
74HC/HCT283
4.5
4.5
4.5
4.5
4.5
4.5
4.5
4.5
V
(V)
TEST CONDITIONS
CC
Product specification
Fig.6
Fig.6
Fig.6
Fig.6
Fig.6
Fig.6
Fig.6
Fig.6
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