Document Outline
- DESCRIPTION
- PINNING
- FAMILY DATA, IDD LIMITS category MSI
- FUNCTION TABLE
- RATINGS
- DC CHARACTERISTICS
- AC CHARACTERISTICS
- APPLICATION INFORMATION
DATA SHEET
Product specification
File under Integrated Circuits, IC04
January 1995
INTEGRATED CIRCUITS
HEF4511B
MSI
BCD to 7-segment
latch/decoder/driver
For a complete data sheet, please also download:
The IC04 LOCMOS HE4000B Logic
Family Specifications HEF, HEC
The IC04 LOCMOS HE4000B Logic
Package Outlines/Information HEF, HEC
January 1995
2
Philips Semiconductors
Product specification
BCD to 7-segment latch/decoder/driver
HEF4511B
MSI
DESCRIPTION
The HEF4511B is a BCD to 7-segment
latch/decoder/driver with four address inputs (D
A
to D
D
),
an active LOW latch enable input (EL), an active LOW
ripple blanking input (BI), an active LOW lamp test input
(LT), and seven active HIGH n-p-n bipolar transistor
segment outputs (O
a
to O
g
).
When EL is LOW, the state of the segment outputs (O
a
to
O
g
) is determined by the data on D
A
to D
D
.
When EL goes HIGH, the last data present on D
A
to
D
D
are stored in the latches and the segment outputs
remain stable. When LT is LOW, all the segment outputs
are HIGH independent of all other input conditions. With
LT HIGH, a LOW on BI forces all segment outputs LOW.
The inputs LT and BI do not affect the latch circuit.
Fig.1 Functional diagram.
PINNING
HEF4511BP(N):
16-lead DIL; plastic (SOT38-1)
HEF4511BD(F):
16-lead DIL; ceramic (cerdip) (SOT74)
HEF4511BT(D):
16-lead SO; plastic (SOT109-1)
( ): Package Designator North America
D
A
to D
D
address (data) inputs
EL
latch enable input (active LOW)
BI
ripple blanking input (active LOW)
LT
lamp test input (active LOW)
O
a
to O
g
segment outputs
Fig.2 Pinning diagram.
Fig.3 Schematic diagram of output stage.
FAMILY DATA, I
DD
LIMITS category MSI
See Family Specifications
Fig.4
Segment
designation.
January 1995
3
Philips Semiconductors
Product specification
BCD to 7-segment latch/decoder/driver
HEF451
1B
MSI
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Fig.5 Logic diagram; for one latch see Fig.6.
January 1995
4
Philips Semiconductors
Product specification
BCD to 7-segment latch/decoder/driver
HEF4511B
MSI
FUNCTION TABLE
Note
1. H = HIGH state (the more positive voltage)
L = LOW state (the less positive voltage)
X = state is immaterial
* Depends upon the BCD code applied during the LOW to HIGH transition of EL.
INPUTS
OUTPUTS
EL
BI
LT
D
D
D
C
D
B
D
A
O
a
O
b
O
c
O
d
O
e
O
f
O
g
DISPLAY
X
X
L
X
X
X
X
H
H
H
H
H
H
H
8
X
L
H
X
X
X
X
L
L
L
L
L
L
L
blank
L
H
H
L
L
L
L
H
H
H
H
H
H
L
0
L
H
H
L
L
L
H
L
H
H
L
L
L
L
1
L
H
H
L
L
H
L
H
H
L
H
H
L
H
2
L
H
H
L
L
H
H
H
H
H
H
L
L
H
3
L
H
H
L
H
L
L
L
H
H
L
L
H
H
4
L
H
H
L
H
L
H
H
L
H
H
L
H
H
5
L
H
H
L
H
H
L
L
L
H
H
H
H
H
6
L
H
H
L
H
H
H
H
H
H
L
L
L
L
7
L
H
H
H
L
L
L
H
H
H
H
H
H
H
8
L
H
H
H
L
L
H
H
H
H
L
L
H
H
9
L
H
H
H
L
H
L
L
L
L
L
L
L
L
blank
L
H
H
H
L
H
H
L
L
L
L
L
L
L
blank
L
H
H
H
H
L
L
L
L
L
L
L
L
L
blank
L
H
H
H
H
L
H
L
L
L
L
L
L
L
blank
L
H
H
H
H
H
L
L
L
L
L
L
L
L
blank
L
H
H
H
H
H
H
L
L
L
L
L
L
L
blank
H
H
H
X
X
X
X
*
*
Fig.6 Logic diagram (one latch); see also Fig.5.
January 1995
5
Philips Semiconductors
Product specification
BCD to 7-segment latch/decoder/driver
HEF4511B
MSI
RATINGS
Limiting values in accordance with the Absolute Maximum System (IEC 134).
Note
1. A destructive high current mode may occur if V
I
and V
O
are not constrained to the range V
SS
V
I
or V
O
V
DD
.
Output (source) current HIGH
-
I
OH
max.
25
mA
For other RATINGS see Family Specifications.
Fig.7 Display.
January 1995
6
Philips Semiconductors
Product specification
BCD to 7-segment latch/decoder/driver
HEF4511B
MSI
DC CHARACTERISTICS
V
SS
= 0 V
HEF
V
DD
V
I
OH
mA
SYMBOL
T
amb
(
C)
-
40
+
25
+
85
MIN.
MAX.
MIN.
TYP.
MIN.
MAX.
Output voltage
5
0
4,10
4,10
4,40
4,10
V
HIGH
10
0
V
OH
9,10
9,10
9,40
9,10
V
15
0
14,10
14,10
14,40
14,10
V
Output voltage
5
5
4,20
V
HIGH
10
5
V
OH
9,20
V
15
5
14,20
V
Output voltage
5
10
3,60
3,60
4,05
3,30
V
HIGH
10
10
V
OH
8,75
8,75
9,10
8,45
V
15
10
13,75
13,75
14,10
13,45
V
Output voltage
5
15
4,00
V
HIGH
10
15
V
OH
9,00
V
15
15
14,00
V
Output voltage
5
20
2,80
2,80
3,80
2,50
V
HIGH
10
20
V
OH
8,10
8,10
9,00
7,80
V
15
20
13,10
13,10
14,00
12,80
V
Output voltage
5
25
3,70
V
HIGH
10
25
V
OH
8,90
V
15
25
14,00
V
January 1995
7
Philips Semiconductors
Product specification
BCD to 7-segment latch/decoder/driver
HEF4511B
MSI
AC CHARACTERISTICS
V
SS
= 0 V; T
amb
= 25
C; input transition times
20 ns
HEC
V
DD
V
I
OH
mA
SYMBOL
T
amb
(
C)
-
55
+
25
+
125
MIN.
MAX.
MIN.
TYP.
MIN.
MAX.
Output voltage
5
0
4,10
4,10
4,40
4,10
V
HIGH
10
0
V
OH
9,10
9,10
9,90
9,10
V
15
0
14,10
14,10
14,40
14,40
V
Output voltage
5
5
4,30
V
HIGH
10
5
V
OH
9,30
V
15
5
14,30
V
Output voltage
5
10
3,60
3,60
4,25
3,20
V
HIGH
10
10
V
OH
8,75
8,75
9,25
8,35
V
15
10
13,75
13,75
14,25
13,35
V
Output voltage
5
15
4,20
V
HIGH
10
15
V
OH
9,20
V
15
15
14,20
V
Output voltage
5
20
2,80
2,80
4,20
2,30
V
HIGH
10
20
V
OH
8,10
8,10
9,20
7,60
V
15
20
13,10
13,10
14,20
12,60
V
Output voltage
5
25
4,15
V
HIGH
10
25
V
OH
9,20
V
15
25
14,20
V
V
DD
V
TYPICAL FORMULA FOR P (
W)
Dynamic power
5
1 000 f
i
+
(f
o
C
L
)
V
DD
2
where
dissipation per
10
4 000 f
i
+
(f
o
C
L
)
V
DD
2
f
i
= input freq. (MHz)
package (P)
15
10 000 f
i
+
(f
o
C
L
)
V
DD
2
f
o
= output freq. (MHz)
C
L
= load capacitance (pF)
(f
o
C
L
) = sum of outputs
V
DD
= supply voltage (V)
January 1995
8
Philips Semiconductors
Product specification
BCD to 7-segment latch/decoder/driver
HEF4511B
MSI
AC CHARACTERISTICS
V
SS
= 0 V; T
amb
= 25
C; C
L
= 50 pF; input transition times
20 ns
V
DD
V
SYMBOL
MIN.
TYP.
MAX.
TYPICAL EXTRAPOLATION
FORMULA
Propagation delays
D
n
O
n
5
155
310 ns
128 ns
+
(0,55 ns/pF) C
L
HIGH to LOW
10
t
PHL
60
120 ns
49 ns
+
(0,23 ns/pF) C
L
15
40
80 ns
32 ns
+
(0,16 ns/pF) C
L
5
135
270 ns
108 ns
+
(0,55 ns/pF) C
L
LOW to HIGH
10
t
PLH
55
110 ns
44 ns
+
(0,23 ns/pF) C
L
15
40
80 ns
32 ns
+
(0,16 ns/pF) C
L
EL
O
n
5
160
320 ns
133 ns
+
(0,55 ns/pF) C
L
HIGH to LOW
10
t
PHL
60
120 ns
49 ns
+
(0,23 ns/pF) C
L
15
45
90 ns
37 ns
+
(0,16 ns/pF) C
L
5
160
320 ns
133 ns
+
(0,55 ns/pF) C
L
LOW to HIGH
10
t
PLH
70
140 ns
59 ns
+
(0,23 ns/pF) C
L
15
50
100 ns
42 ns
+
(0,16 ns/pF) C
L
BI
O
n
5
120
240 ns
93 ns
+
(0,55 ns/pF) C
L
HIGH to LOW
10
t
PHL
50
100 ns
39 ns
+
(0,23 ns/pF) C
L
15
35
70 ns
27 ns
+
(0,16 ns/pF) C
L
BI
O
n
5
105
210 ns
78 ns
+
(0,55 ns/pF) C
L
LOW to HIGH
10
t
PLH
40
80 ns
29 ns
+
(0,23 ns/pF) C
L
15
30
60 ns
22 ns
+
(0,16 ns/pF) C
L
LT
O
n
5
80
160 ns
52 ns
+
(0,55 ns/pF) C
L
HIGH to LOW
10
t
PHL
30
60 ns
19 ns
+
(0,23 ns/pF) C
L
15
20
40 ns
12 ns
+
(0,16 ns/pF) C
L
5
60
120 ns
33 ns
+
(0,55 ns/pF) C
L
LOW to HIGH
10
t
PLH
30
60 ns
19 ns
+
(0,23 ns/pF) C
L
15
25
50 ns
17 ns
+
(0,16 ns/pF) C
L
Output transition times
5
60
120 ns
10 ns
+
(1,0 ns/pF) C
L
HIGH to LOW
10
t
THL
30
60 ns
9 ns
+
(0,42 ns/pF) C
L
15
20
40 ns
6 ns
+
(0,28 ns/pF) C
L
5
25
50 ns
20 ns
+
(1,0 na/pF) C
L
LOW to HIGH
10
t
TLH
16
32 ns
13 ns
+
(0,06 ns/pF) C
L
15
13
26 ns
10 ns
+
(0,06 ns/pF) C
L
January 1995
9
Philips Semiconductors
Product specification
BCD to 7-segment latch/decoder/driver
HEF4511B
MSI
Minimum EL
5
80
40
ns
see also waveforms
Fig.8
pulse width; LOW
10
t
WELL
40
20
ns
15
35
17
ns
Set-up time
5
50
25
ns
D
n
EL
10
t
su
25
12
ns
15
20
9
ns
Hold-time
5
60
30
ns
D
n
EL
10
t
hold
30
15
ns
15
25
12
ns
V
DD
V
SYMBOL
MIN.
TYP.
MAX.
TYPICAL EXTRAPOLATION
FORMULA
Fig.8 Waveforms showing minimum EL pulse width, set-up and hold time for DC to EL.
Conditions:
D
D
= LOW
D
A
= D
B
= B
I
= LT = HIGH
January 1995
10
Philips Semiconductors
Product specification
BCD to 7-segment latch/decoder/driver
HEF4511B
MSI
APPLICATION INFORMATION
Some examples of applications for the HEF4511B are:
Driving LED displays.
Driving incandescent displays.
Driving fluorescent displays.
Driving LCD displays.
Driving gas discharge displays.
Fig.9 Connection to common cathode LED display readout.
Fig.10 Connection to common anode LED display readout.
January 1995
11
Philips Semiconductors
Product specification
BCD to 7-segment latch/decoder/driver
HEF4511B
MSI
Fig.11 Connection to incandescent display readout.
(1) A filament pre-warm resistor is recommended to
reduce filament thermal shock and increase the
effective cold resistance of the filament.
Fig.12 Connection to fluorescent display readout.
Fig.13 Connection to gas discharge display
readout.
Fig.14 Connection to liquid crystal (LCD) display
readout. Direct d.c. drive of LCDs not
recommended for life of LCD readouts.
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