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CD4511BC BCD-to-7 Segment Latch/Decoder/Driver
October 1987 Revised April 2002
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 latch, 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 light emitting diodes (LED), incandescent, fluorescent, gas discharge, or liquid crystal readouts either directly or indirectly. Applications include instrument (e.g., counter, DVM, etc.) display driver, computer/calculator display driver, cockpit display driver, and various clock, watch, and timer uses.
Features
s Low logic circuit power dissipation s High current sourcing outputs (up to 25 mA) s Latch storage of code s Blanking input s Lamp test provision s Readout blanking on all illegal input combinations s Lamp intensity modulation capability s Time share (multiplexing) facility s Equivalent to Motorola MC14511
Ordering Code:
Order Number CD4511BCWM CD4511BCN Package Number M16B N16E Package Description 16-Lead Small Outline Intergrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
Devices also available in Tape and Reel. Specify by appending suffix letter "X" to the ordering code.
Connection Diagrams
Segment Identification
Top View
(c) 2002 Fairchild Semiconductor Corporation
DS005991
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CD4511BC
Truth Table
Inputs LE X X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 BI X 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 LT 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 D X X 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 X C X X 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 X B X X 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 X A X X 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 X a 1 0 1 0 1 1 0 1 0 1 1 1 0 0 0 0 0 0 b 1 0 1 1 1 1 1 0 0 1 1 1 0 0 0 0 0 0 c 1 0 1 1 0 1 1 1 1 1 1 1 0 0 0 0 0 0 d 1 0 1 0 1 1 0 1 1 0 1 0 0 0 0 0 0 0 * Outputs e 1 0 1 0 1 0 0 0 1 0 1 0 0 0 0 0 0 0 f 1 0 1 0 0 0 1 1 1 0 1 1 0 0 0 0 0 0 g 1 0 0 0 1 1 1 1 1 0 1 1 0 0 0 0 0 0 * 0 1 2 3 4 5 6 7 8 9 Display B
X = Don't Care *Depends upon the BCD code applied during the 0 to 1 transition of LE.
Display
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CD4511BC
Absolute Maximum Ratings(Note 1)
DC Supply Voltage (VDD) Input Voltage (VIN) Storage Temperature Range (TS) Power Dissipation (PD) Dual-In-Line Small Outline Lead Temperature (TL) (Soldering, 10 seconds) 260C 700 mW 500 mW
-0.5V to +18V -0.5V to VDD +0.5V -65C to +150C
Recommended Operating Conditions
DC Supply Voltage (VDD) Input Voltage (VIN) Operating Temperature Range (TA) 3V to 15V 0V to VDD
-55C to +125C
Note 1: Devices should not be connected with power on.
DC Electrical Characteristics
Symbol IDD Quiescent Supply Current VOL Output Voltage Logical "0" Level VOH Output Voltage Logical "1" Level VIL LOW Level Input Voltage VIH HIGH Level Input Voltage VOH Output (Source) Drive Voltage Parameter VDD = 5V VDD = 10V VDD = 15V VDD = 5V VDD = 10V VDD = 15V VDD = 5V VDD = 10V VDD = 15V VDD = 5V, VOUT = 3.8V or 0.5V VDD = 10V, VOUT = 8.8V or 1.0V VDD = 15V, VOUT = 13.8V or 1.5V VDD = 5V, VOUT = 0.5V or 3.8V VDD = 10V, VOUT = 1.0V or 8.8V VDD = 15V, V OUT = 1.5V or 13.8V VDD = 5V, IOH = 0 mA VDD = 5V, IOH = 5 mA VDD = 5V, IOH = 10 mA VDD = 5V, IOH = 15 mA VDD = 5V, IOH = 20 mA VDD = 5V, IOH = 25 mA VDD = 10V, IOH = 0 mA VDD = 10V, IOH = 5 mA VDD = 10V, IOH = 10 mA VDD = 10V, I OH = 15 mA VDD = 10V, IOH = 20 mA VDD = 10V, IOH = 25 mA VDD = 15V, IOH = 0 mA VDD = 15V, I OH = 5 mA VDD = 15V, IOH = 10 mA VDD = 15V, IOH = 15 mA VDD = 15V, IOH = 20 mA VDD = 15V, I OH = 25 mA IOL LOW Level Output Current IIN Input Current VDD = 5V, VOL = 0.4V VDD = 10V, VOL = 0.5V VDD = 15V, VOL = 1.5V VDD = 15V, VIN = 0V VDD = 15V, VIN = 15V 0.64 1.6 4.2 -0.1 0.1 0.51 1.3 3.4 13.6 13.6 14.0 14.0 14.1 14.1 8.6 8.6 9.0 9.0 9.1 9.1 3.4 3.4 3.9 3.9 3.5 7.0 11.0 4.1 4.1 9.1 14.1 1.5 3.0 4.0 3.5 7.0 11.0 4.1 Conditions -55C Min Max 5 10 20 0.01 0.01 0.01 4.1 9.1 14.1 0 0 0 4.57 9.58 14.59 2 4 6 3 6 9 4.57 4.24 4.12 3.94 3.75 3.54 9.58 9.26 9.17 9.04 8.9 8.75 9.58 14.27 14.17 14.07 13.95 13.80 0.88 2.25 8.8 -10-5 10-5 -0.1 0.1 0.36 0.9 2.4 -1.0 1.0 A mA 13.2 13.6 V 14.1 8.2 8.6 V 9.1 3.0 3.5 V 1.5 3.0 4.0 3.5 7.0 11.0 4.1 V Min +25C Typ Max 5 10 20 0.01 0.01 0.01 4.1 9.1 14.1 1.5 3.0 4.0 V V +125C Min Max 150 300 600 0.05 0.05 0.05 V A Units
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CD4511BC
AC Electrical Characteristics
Symbol CIN tr Parameter Input Capacitance Output Rise Time (Figure 1a) tf Output Fall Time (Figure 1a) tPLH Turn-Off Delay Time (Data) (Figure 1a) tPHL Turn-On Delay Time (Data) (Figure 1a) tPLH Turn-Off Delay Time (Blank) (Figure 1a) tPHL Turn-On Delay Time (Blank) (Figure 1a) tPLH Turn-Off Delay Time (Lamp Test) (Figure 1a) tPHL Turn-On Delay Time (Lamp Test) (Figure 1 a) tSETUP Setup Time (Figure 1b) tHOLD Hold Time (Figure 1b) PWLE Minimum Latch Enable Pulse Width (Figure 1 c) VIN = 0 VDD = 5V VDD = 10V VDD = 15V VDD = 5V VDD = 10V VDD = 15V VDD = 5V VDD = 10V VDD = 15V VDD = 5V VDD = 10V VDD = 15V VDD = 5V VDD = 10V VDD = 15V VDD = 5V VDD = 10V VDD = 15V VDD = 5V VDD = 10V VDD = 15V VDD = 5V VDD = 10V VDD = 15V VDD = 5V VDD = 10V VDD = 15V VDD = 5V VDD = 10V VDD = 15V VDD = 5V VDD = 10V VDD = 15V
(Note 2)
Conditions Min Typ 5.0 40 30 25 125 75 65 640 250 175 720 290 195 320 130 100 485 200 160 313 125 90 313 125 90 180 76 40 0 0 0 520 220 130 90 38 20 -90 -38 -20 260 110 65 ns ns ns Max 7.5 80 60 50 250 150 130 1280 500 350 1440 580 400 640 260 200 970 400 320 625 250 180 625 250 180 ns ns ns ns ns ns ns ns Units pF
TA = 25C and CL = 50 pF, typical temperature coefficient for all values of VDD = 0.3%/C
Note 2: AC Parameters are guaranteed by DC correlated testing.
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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 Crystal (LC) Readout
Direct DC drive of LC's not recommended for life of LC readouts.
Incandescent Readout
Fluorescent Readout
**A filament pre-warm resistor is recommended to reduce filament thermal shock and increase the effective cold resistance of the filament.
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CD4511BC
Physical Dimensions inches (millimeters) unless otherwise noted
16-Lead Small Outline Intergrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide Package Number M16B
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CD4511BC BCD-to-7 Segment Latch/Decoder/Driver
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
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. 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 systems are devices or systems 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. www.fairchildsemi.com 8 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.fairchildsemi.com

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