M74HC77
4 BIT D TYPE LATCH
s
s
s
s
s
s
s
HIGH SPEED :
t
PD
= 11 ns (TYP.) at V
CC
= 6V
LOW POWER DISSIPATION:
I
CC
=2µA(MAX.) at T
A
=25°C
HIGH NOISE IMMUNITY:
V
NIH
= V
NIL
= 28 % V
CC
(MIN.)
SYMMETRICAL OUTPUT IMPEDANCE:
|I
OH
| = I
OL
= 4mA (MIN)
BALANCED PROPAGATION DELAYS:
t
PLH
≅
t
PHL
WIDE OPERATING VOLTAGE RANGE:
V
CC
(OPR) = 2V to 6V
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 77
DIP
SOP
TSSOP
ORDER CODES
PACKAGE
DIP
SOP
TSSOP
TUBE
M74HC77B1R
M74HC77M1R
T&R
M74HC77RM13TR
M74HC77TTR
DESCRIPTION
The M74HC77 is an high speed CMOS 4 BIT D
TYPE LATCH fabricated with silicon gate C
2
MOS
technology.
It contains two groups of 2 bit latches controlled by
an enable input (G1
•
2 or G3
•
4). These two latch
groups can be used in different circuits. The data
applied to the data inputs (1D, 2D, or 3D, 4D) are
transferred to the Q outputs (1Q, 2Q, or 3Q, 4Q)
respectively when the enable input (G1
•
2 or G3
•
4)
is taken high. The Q outputs will follow the data
inputs as long as the enable input is kept high.
When the enable input is taken low, the
information data applied to the data input is
retained at the Q outputs.
All inputs are equipped with protection circuits
against static discharge and transient excess
voltage.
PIN CONNECTION AND IEC LOGIC SYMBOLS
August 2001
1/10
M74HC77
IINPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
PIN No
1, 2, 5, 6
3
7, 10
8, 9, 13, 14
12
11
4
SYMBOL
1D to 4D
G3
•
4
NC
1Q to 4Q
G1
•
2
GND
V
CC
NAME AND FUNCTION
Data Inputs
Latch Enable Input,
Latches 3 and 4
No Internal Connection
Latch Outputs
Latch Enable Input,
Latches 1 and 2
Ground (0V)
Positive Supply Voltage
TRUTH TABLE
INPUTS
D
L
H
X
X : Don’t Care
OUTPUTS
FUNCTION
G
H
H
L
Q
L
H
Qn
LATCH
LOGIC DIAGRAM
2/10
M74HC77
ABSOLUTE MAXIMUM RATINGS
Symbol
V
CC
V
I
V
O
I
IK
I
OK
I
O
Supply Voltage
DC Input Voltage
DC Output Voltage
DC Input Diode Current
DC Output Diode Current
DC Output Current
Parameter
Value
-0.5 to +7
-0.5 to V
CC
+ 0.5
-0.5 to V
CC
+ 0.5
±
20
±
20
±
25
±
50
500(*)
-65 to +150
300
Unit
V
V
V
mA
mA
mA
mA
mW
°C
°C
I
CC
or I
GND
DC V
CC
or Ground Current
P
D
Power Dissipation
T
stg
T
L
Storage Temperature
Lead Temperature (10 sec)
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied
(*) 500mW at 65
°
C; derate to 300mW by 10mW/
°
C from 65
°
C to 85
°
C
RECOMMENDED OPERATING CONDITIONS
Symbol
V
CC
V
I
V
O
T
op
t
r
, t
f
Supply Voltage
Input Voltage
Output Voltage
Operating Temperature
Input Rise and Fall Time
V
CC
= 2.0V
V
CC
= 4.5V
V
CC
= 6.0V
Parameter
Value
2 to 6
0 to V
CC
0 to V
CC
-55 to 125
0 to 1000
0 to 500
0 to 400
Unit
V
V
V
°C
ns
ns
ns
3/10
M74HC77
DC SPECIFICATIONS
Test Condition
Symbol
Parameter
V
CC
(V)
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
4.5
6.0
V
OL
Low Level Output
Voltage
2.0
4.5
6.0
4.5
6.0
I
I
I
CC
Input Leakage
Current
Quiescent Supply
Current
6.0
6.0
I
O
=-20
µA
I
O
=-20
µA
I
O
=-20
µA
I
O
=-4.0 mA
I
O
=-5.2 mA
I
O
=20
µA
I
O
=20
µA
I
O
=20
µA
I
O
=4.0 mA
I
O
=5.2 mA
V
I
= V
CC
or GND
V
I
= V
CC
or GND
T
A
= 25°C
Min.
1.5
3.15
4.2
0.5
1.35
1.8
1.9
4.4
5.9
4.18
5.68
2.0
4.5
6.0
4.31
5.8
0.0
0.0
0.0
0.17
0.18
0.1
0.1
0.1
0.26
0.26
±
0.1
2
1.9
4.4
5.9
4.13
5.63
0.1
0.1
0.1
0.33
0.33
±
1
20
Typ.
Max.
Value
-40 to 85°C
Min.
1.5
3.15
4.2
0.5
1.35
1.8
1.9
4.4
5.9
4.10
5.60
0.1
0.1
0.1
0.40
0.40
±
1
40
µA
µA
V
V
Max.
-55 to 125°C
Min.
1.5
3.15
4.2
0.5
1.35
1.8
Max.
V
Unit
V
IH
High Level Input
Voltage
Low Level Input
Voltage
High Level Output
Voltage
V
IL
V
V
OH
4/10
M74HC77
AC ELECTRICAL CHARACTERISTICS
(C
L
= 50 pF, Input t
r
= t
f
= 6ns)
Test Condition
Symbol
Parameter
V
CC
(V)
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
T
A
= 25°C
Min.
Typ.
30
8
7
39
13
11
39
13
11
15
6
6
15
3
3
Max.
75
15
13
100
20
17
100
20
17
75
15
13
50
10
9
25
5
4
Value
-40 to 85°C
Min.
Max.
95
19
16
125
25
21
125
25
21
95
19
16
65
13
11
30
6
5
-55 to 125°C
Min.
Max.
110
22
19
150
30
26
150
30
26
110
22
19
75
15
13
40
8
7
ns
Unit
t
TLH
t
THL
Output Transition
Time
t
PLH
t
PHL
Propagation Delay
Time (D - Q)
t
PLH
t
PHL
Propagation Delay
Time (G-Q)
t
W(H)
Minimum Pulse
Width (G)
Minimum Set-up
Time
Minimum Hold
Time
ns
ns
ns
t
s
ns
t
h
ns
CAPACITIVE CHARACTERISTICS
Test Condition
Symbol
Parameter
V
CC
(V)
5.0
5.0
T
A
= 25°C
Min.
Typ.
5
20
Max.
10
Value
-40 to 85°C
Min.
Max.
10
-55 to 125°C
Min.
Max.
10
pF
pF
Unit
C
IN
C
PD
Input Capacitance
Power Dissipation
Capacitance (note
1)
1) C
PD
is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without
load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. I
CC(opr)
= C
PD
x V
CC
x f
IN
+ I
CC
/4(per
LATCH)
5/10
