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October 1987
Revised January 1999
CD4511BC BCD-to-7 Segment Latch/Decoder/Driver
© 1999 Fairchild Semiconductor Corporation DS005991.prf www.fairchildsemi.com
CD4511BC
BCD-to-7 Segment Latch/Decoder/Driver
General Description
The CD4511BC BCD-to-seven segment latch/decoder/
driver is constructed with complementary MOS (CMOS)
enhancement mode devices and NPN bipolar output drivers in a single monolithic structure. The circuit provides the
functions of a 4-bit storage la tch, an 8421 BCD-to-seven
segment decoder, and an output drive capability. 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. It can
be used with seven-segment ligh t emitting diodes (LED),
incandescent, fluorescent , gas discharge, or liquid cr ystal
readouts either dire ctly or indirectly.
Applications include instr ument (e.g., counter, DVM, etc.)
display driver, computer/calculator display driver, cockpit
display driver, and various clock, watch, and timer uses.
Features
■ Low logic circuit power dissipation
■ High current sourcing outputs (up to 25 mA)
■ Latch storage of code
■ Blanking input
■ Lamp test provision
■ Readout blanking on all illegal input combinations
■ Lamp intensity modulation capability
■ Time share (multiplexing) facility
■ Equivalent to Motorola MC14511
Ordering Code:
Devices also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.
Connection Diagrams
Pin Assignments for SOIC and DIP
Top View
Segment Identification
Order Number Package Number Package Description
CD4511BCWM M16B 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300” Wide
CD4511BCN N16E 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide
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CD4511BC
Truth Table
X = Don’t Care
*Depends upon th e BCD code applied du ring the 0 to 1 transition of LE.
Display
Inputs Outputs
LE BI
LT DCBAa bcd e f gDisplay
XX0 XXXX11 11111 B
X01XX XX0000 000
011000 011111 10 0
0 110001 011000 0 1
01 100101 101101 2
011 001111 11001 3
01101 000110 011 4
011010 110110 11 5
0 110110 001111 1 6
01 101111 110000 7
011 100011 11111 8
01110 011110 011 9
011101 000000 00
0 111011 000000 0
01 111000 000000
0111 101000 0000
011111 000000 00
0 111111 000000 0
1 1 1XXXX * *
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CD4511BC
Absolute Maximum Ratings(Note 1) Recommended Operating
Conditions
Note 1: Devices should not be connected with power on.
DC Electrical Characteristics
DC Supply Voltage (VDD) −0.5V to +18V
Input Voltage (V
IN
) −0.5V to VDD +0.5V
Storage Temperature Range (T
S
) −65°C to +150°C
Power Dissipation (P
D
)
Dual-In-Line 700 mW
Small Outline 500 mW
Lead Temperature (T
L
)
(Soldering, 10 seconds ) 260°C
DC Supply Voltage (V
DD
) 3V to 15V
Input Voltage (V
IN
)0V to V
DD
Operating Temperature Range (TA) −40°C t o +85°C
Symbol Parameter Conditions
−40°C +25°C +85°C
Units
Min Max Min Typ Max Min Max
I
DD
Quiescent VDD = 5V 20 20 150 µA
Supply Current VDD = 10V 40 40 300 µA
VDD = 15V 80 80 600 µA
V
OL
Output Voltage VDD = 5V 0.01 0 0.01 0.05 V
Logical “0” VDD = 10V 0.01 0 0.01 0.05 V
Level VDD = 15V 0.01 0 0.01 0.05 V
V
OH
Output Voltage VDD = 5V 4.1 4.1 4.57 4.1 V
Logical “1” VDD = 10V 9.1 9.1 9.58 9.1 V
Level VDD = 15V 14.1 14.1 14.59 14.1 V
V
IL
LOW Level VDD = 5V, V
OUT
= 3.8V or 0.5V 1.5 2 1.5 1.5 V
Input Voltage VDD = 10V, V
OUT
= 8.8V or 1.0V 3.0 4 3.0 3.0 V
VDD = 15V, V
OUT
= 13.8V or 1.5V 4.0 6 4.0 4.0 V
V
IH
HIGH Level VDD = 5V, V
OUT
= 0.5V or 3.8V 3.5 3.5 3 3.5 V
Input Voltage VDD = 10V, V
OUT
= 1.0V or 8.8V 7.0 7.0 6 7.0 V
VDD = 15V, V
OUT
= 1.5V or 13.8V 11.0 11.0 9 11.0 V
V
OH
Output VDD = 5V, IOH = 0 mA 4.1 4.1 4.57 4.1 V
(Source) Drive VDD = 5V, IOH = 5 mA 4.24 V
Voltage VDD = 5V, IOH = 10 mA 3.6 3.6 4.12 3.3 V
VDD = 5V, IOH = 15 mA 3.94 V
VDD = 5V, IOH = 20 mA 2.8 2.8 3.75 2.5 V
VDD = 5V, I
OH
= 25 mA 3.54 V
VDD = 10V, IOH = 0 mA 9.1 9.1 9.58 9.1 V
VDD = 10V, IOH = 5 mA 9.26 V
VDD = 10V, IOH = 10 mA 8.75 8.75 9.17 8.45 V
VDD = 10V, I
OH
= 15 mA 9.04 V
VDD = 10V, IOH = 20 mA 8.1 8.1 8.9 7.8 V
VDD = 10V, IOH = 25 mA 8.75 V
VDD = 15V, IOH = 0 mA 14.1 14.1 14.59 14.1 V
VDD = 15V, I
OH
= 5 mA 14.27 V
VDD = 15V, IOH = 10 mA 13.75 13.75 14.18 13.45 V
VDD = 15V, IOH = 15 mA 14.07 V
VDD = 15V, IOH = 20 mA 13.1 13.1 13.95 12.8 V
VDD = 15V, I
OH
= 25 mA 13.8 V
I
OL
LOW Level VDD = 5V, VOL = 0.4V 0.52 0.44 0.88 0.36 mA
Output Current VDD = 10V, VOL = 0.5V 1.3 1.1 2.25 0.9 mA
VDD = 15V, VOL = 1.5V 3.6 3.0 8.8 2.4 mA
I
IN
Input Current VDD = 15V, VIN = 0V −0.30 −10−5−0.30 −1.0 µA
VDD = 15V, VIN = 15V 0.30 10−50.30 1.0 µA
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CD4511BC
AC Electrical Charac teristics (Note 2)
T
A
= 25°C and CL = 50 pF, typical temperature coefficient for all values of VDD = 0.3%/°C
Note 2: AC Parameters are guara nt eed by DC correlated testing.
Symbol Parameter Conditions Min Typ Max Units
C
IN
Input Capacitance VIN = 05.07.5pF
t
r
Output Rise Time VDD = 5V 40 80 ns
(Figure 1a) VDD = 10V 30 60 ns
VDD = 15V 25 50 ns
t
f
Output Fall Time VDD = 5V 125 250 ns
(Figure 1a)V
DD
= 10V 75 150 ns
VDD = 15V 65 130 ns
t
PLH
Turn-Off Delay Time VDD = 5V 640 1280 ns
(Data) (Figure 1a)V
DD
= 10V 250 500 ns
VDD = 15V 175 350 ns
t
PHL
Turn-On Delay Time VDD = 5V 720 1440 ns
(Data) (Figure 1a) VDD = 10V 290 580 ns
VDD = 15V 195 400 ns
t
PLH
Turn-Off Delay Time VDD = 5V 320 640 ns
(Blank) (Figure 1a)V
DD
= 10V 130 260 ns
VDD = 15V 100 200 ns
t
PHL
Turn-On Delay Time VDD = 5V 485 970 ns
(Blank) (Figure 1a) VDD = 10V 200 400 ns
VDD = 15V 160 320 ns
t
PLH
Turn-Off Delay Time VDD = 5V 313 625 ns
(Lamp Test) (Figure 1a)V
DD
= 10V 125 250 ns
VDD = 15V 90 180 ns
t
PHL
Turn-On Delay Time VDD = 5V 313 625 ns
(Lamp Test) (Figure 1 a)V
DD
= 10V 125 250 ns
VDD = 15V 90 180 ns
t
SETUP
Setup Time VDD = 5V 180 90 ns
(Figure 1b)V
DD
= 10V 76 38 ns
VDD = 15V 40 20 ns
t
HOLD
Hold Time VDD = 5V 0 −90 ns
(Figure 1b)V
DD
= 10V 0 −38 ns
VDD = 15V 0 −20 ns
PWLEMinimum Latch Enable VDD = 5V 520 260 ns
Pulse Width (Figure 1 c)V
DD
= 10V 220 110 ns
VDD = 15V 130 65 ns
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CD4511BC
Switching Time Waveforms
FIGURE 1.
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CD4511BC
Typical Applications
Light Emitting Diode (LED) Readout
Gas Discharge Readout Liquid Cryst al (LC) Readout
Direct DC drive of LC’s not recommended for life of LC readout s.
Incandescent Reado ut
**A filament pre -war m r esis tor is re comm end ed to reduc e f ilame nt th er m al
shock and increase th e ef fect ive cold resistance of the filament.
Fluorescen t Readout
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CD4511BC
Physical Dimensions inches (millimeters) unless otherwise noted
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300” Wide
Package Number M16B
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Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right at any time without notice to change said circuitry and specifications.
CD4511BC BCD-to-7 Segment Latch/Decoder/Driver
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD
SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or system s ar e devices or syste ms
which, (a) are intended for surgical implant into the
body, or (b) support or sustain life, and (c) whose failure
to perform when properly used in accordance with
instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the
user.
2. A critical component in any c omponent of a life suppor t
device or system whose failure to perform can be reasonably expected to cause the failure of the life suppor t
device or system, or to affect its safety or effectiveness.
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Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide
Package Number N16E
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