HD74HC4511
BCD-to-Seven Segment Latch/Decoder/Driver
ADE-205-539 (Z)
1st. Edition
Sep. 2000
Description
The HD74HC4511 provides the functions of a 4-bit storage latch, a BCD-to-seven-segment decoder, and
an output driver. Lamp test (LT), blanking (BI), and latch enable (LE) inputs are used to test the display, to
turn off or pulse-modulate the brightness of the display, and to store a BCD code, respectively.
Features
•
High Speed Operation: t
pd
(A, B, C, D to a – g) = 31 ns typ (C
L
= 50 pF)
•
High Output Current: Fanout of 10 LSTTL Loads
•
Wide Operating Voltage: V
CC
= 2 to 6 V
•
Low Input Current: 1 µA max
•
Low Quiescent Supply Current: I
CC
(static) = 4 µA max (Ta = 25°C)
HD74HC4511
Function Table
Inputs
LE
X
X
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
H
Note:
BI
X
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
LT
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
D
X
X
L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
X
C
X
X
L
L
L
L
H
H
H
H
L
L
L
L
H
H
H
H
X
B
X
X
L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
X
A
X
X
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
X
Outputs
a
H
L
H
L
H
H
L
H
L
H
H
H
L
L
L
L
L
L
*
1
b
H
L
H
H
H
H
H
L
L
H
H
H
L
L
L
L
L
L
c
H
L
H
H
L
H
H
H
H
H
H
H
L
L
L
L
L
L
d
H
L
H
L
H
H
L
H
H
L
H
L
L
L
L
L
L
L
e
H
L
H
L
H
L
L
L
H
L
H
L
L
L
L
L
L
L
f
H
L
H
L
L
L
H
H
H
L
H
H
L
L
L
L
L
L
g
H
L
H
L
H
H
H
H
H
L
H
H
L
L
L
L
L
L
Display
8
Blank
0
1
2
3
4
5
6
7
8
9
Blank
Blank
Blank
Blank
Blank
Blank
*
1
1. Depends upon the BCD code previously applied when LE = L
a
f
e
d
g
c
b
2
HD74HC4511
Pin Arrangement
B
C
LT
BI
LE
D
A
GND
1
2
3
4
5
6
7
8
(Top view)
C
LT
BI
LE
D
A
B
f
g
a
b
c
d
16 V
CC
15 f
14 g
13 a
12 b
11 c
10 d
9
e
e
3
HD74HC4511
DC Characteristics
Ta = 25°C
Item
Input voltage
Symbol
V
IH
Ta = –40 to
+85°C
Max
—
—
—
0.5
1.35
1.8
—
—
—
—
—
0.1
0.1
0.1
0.33
0.33
±1.0
40
µA
µA
I
OL
= 4 mA
I
OL
= 5.2 mA
Vin = V
CC
or GND
Vin = V
CC
or GND, Iout = 0
µA
V
I
OH
= –4 mA
I
OH
= –5.2 mA
Vin = V
IH
or V
IL
I
OL
= 20
µA
V
Vin = V
IH
or V
IL
I
OH
= –20
µA
V
Unit
V
Test Conditions
V
CC
(V) Min Typ Max Min
2.0
4.5
6.0
1.5 —
3.15 —
4.2 —
—
—
—
—
—
—
—
—
—
0.5
1.5
3.15
4.2
—
V
IL
2.0
4.5
6.0
1.35 —
1.8
—
1.9
4.4
5.9
4.13
5.63
—
—
—
Output voltage
V
OH
2.0
4.5
6.0
4.5
6.0
1.9 2.0 —
4.4 4.5 —
5.9 6.0 —
4.18 —
5.68 —
—
—
—
—
—
—
—
—
—
V
OL
2.0
4.5
6.0
4.5
6.0
0.0 0.1
0.0 0.1
0.0 0.1
—
—
—
—
0.26 —
0.26 —
±0.1
—
4.0
—
Input current
Quiescent supply
current
Iin
I
CC
6.0
6.0
4
HD74HC4511
AC Characteristics
(C
L
= 50 pF, Input t
r
= t
f
= 6 ns)
Ta = 25°C
Item
Symbol
Ta = –40 to
+85°C
Max
500
100
86
315
63
54
190
38
33
500
100
86
—
—
—
—
—
—
—
—
—
75
15
13
95
19
16
10
pF
ns
ns
ns
ns
ns
LE to a – g
LT
to a – g
BI
to a – g
Unit
ns
Test Conditions
A, B, C or D to a – g
V
CC
(V) Min Typ Max Min
2.0
4.5
6.0
—
—
—
—
—
—
—
—
—
—
—
—
80
16
14
—
31
—
—
25
—
—
17
—
—
35
—
—
6
—
400 —
80
68
—
—
Propagation delay t
PLH
time
t
PHL
t
PLH
t
PHL
2.0
4.5
6.0
250 —
50
43
—
—
t
PLH
t
PHL
2.0
4.5
6.0
150 —
30
26
—
—
t
PLH
t
PHL
2.0
4.5
6.0
400 —
80
68
—
—
—
—
—
—
—
—
—
60
12
10
75
15
13
10
—
—
100
20
17
125
25
21
5
5
5
—
—
—
—
—
—
—
Pulse width
t
w
2.0
4.5
6.0
Setup time
t
su
2.0
4.5
6.0
100 —
20
17
5
5
5
—
—
—
—
—
—
—
4
—
—
0
—
—
4
—
—
5
—
5
Hold time
t
h
2.0
4.5
6.0
Output rise time
t
TLH
2.0
4.5
6.0
Output fall time
t
THL
2.0
4.5
6.0
Input capacitance
Cin
—
5
