CD4511B - BCD-to-7-Segment Latch Decoder Driver | Texas Instruments
MPN: CD4511B β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.45 | $0.45 |
| 10 | $0.38 | $3.80 |
| 100 | $0.3 | $30.00 |
| 500 | $0.25 | $125.00 |
| 1,000 | $0.2 | $200.00 |
Drop-in alternatives for CD4511B β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
CD4511BE
β Drop-Inπ Reference alternative (not in catalog)
CD4511BNSR
β Drop-Inπ Reference alternative (not in catalog)
CD4511BPWR
β Drop-Inπ Reference alternative (not in catalog)
MC14511BCP
β Drop-Inπ Reference alternative (not in catalog)
HCF4511BEY
β Drop-Inπ Reference alternative (not in catalog)
TC4511BP
β Drop-Inπ Reference alternative (not in catalog)
HEF4511BP
β Drop-Inπ Reference alternative (not in catalog)
NTE4511B
β Drop-Inπ Reference alternative (not in catalog)
CD4511B Maximum Ratings & Electrical Characteristics
| Function | BCD-to-7-segment latch decoder driver |
| Technology | CMOS with bipolar outputs |
| Supply Voltage Range | 3 V to 18 V |
| Output Current (source) | 25 mA per segment |
| Input Type | BCD (4-bit) |
| Output Type | 7-segment active-high |
| Latch Enable | Yes |
| Lamp Test | Yes |
| Blanking | Yes |
| Quiescent Current (typical) | 80 Β΅A at 5 V |
| Operating Temperature Range | -55Β°C to +125Β°C |
| Package Options | PDIP-16, SOIC-16, TSSOP-16 |
| Mounting Type | Through-hole or Surface Mount |
| RoHS Status | Compliant |
| Number of Pins | 16 |
CD4511B Pin Configuration
| Pin 1 | B β BCD input B |
| Pin 2 | C β BCD input C |
| Pin 3 | LT β Lamp test input (active low) |
| Pin 4 | BL β Blanking input (active high) |
| Pin 5 | LE β Latch enable input |
| Pin 6 | D β BCD input D (MSB) |
| Pin 7 | A β BCD input A (LSB) |
| Pin 8 | VSS β Ground |
| Pin 9 | e β Segment e output |
| Pin 10 | d β Segment d output |
| Pin 11 | c β Segment c output |
| Pin 12 | b β Segment b output |
| Pin 13 | a β Segment a output |
| Pin 14 | g β Segment g output |
| Pin 15 | f β Segment f output |
| Pin 16 | VDD β Positive supply |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
CD4511B is suitable for 6 applications: Digital Clock, Frequency Counter, Digital Voltmeter, Industrial Control Panel, Battery-Powered Device, Multiplexed Display System.
Digital Clock
The CD4511B is used to drive 7-segment displays in digital clocks. Its latch enable allows multiplexing of multiple digits, reducing the number of decoder ICs needed. The 25 mA output current directly drives common-cathode LEDs, simplifying the design. The low quiescent current is ideal for battery-powered clocks, and the wide supply voltage range accommodates various power sources.
Recommended
Frequency Counter
In frequency counters, the CD4511B converts the measured frequency count into a readable display. The latch enable feature holds the displayed value while the next measurement is taken, preventing flicker. The high noise immunity of CMOS ensures reliable operation in electrically noisy environments. The 25 mA segment drive allows bright displays for visibility in lab settings.
Recommended
Digital Voltmeter
The CD4511B is used in digital voltmeters to display the measured voltage. The BCD inputs come from an ADC or counter, and the decoder drives the 7-segment display. The blanking input can be used to implement auto-ranging or to blank leading zeros. The low power consumption is beneficial for portable multimeters, and the wide operating temperature range ensures accuracy in various environments.
Recommended
Industrial Control Panel
The CD4511B is used in industrial control panels to display process parameters such as temperature, pressure, or count. Its robust CMOS construction and wide supply voltage range make it suitable for industrial environments. The latch enable allows updating displays without flicker, and the lamp test feature aids in maintenance. The 25 mA output can drive large, high-brightness LEDs for visibility in factory settings.
Recommended
Battery-Powered Device
The CD4511B is ideal for battery-powered devices due to its low quiescent current of 80 Β΅A at 5V. It can drive low-power LEDs directly, minimizing additional components. The wide supply voltage range (3V to 18V) allows operation from various battery chemistries. The latch enable feature reduces power consumption by holding the display data, allowing the microcontroller to sleep.
Recommended
Multiplexed Display System
The CD4511B is commonly used in multiplexed display systems where multiple digits share a single decoder. The latch enable input stores the BCD code for each digit, allowing time-division multiplexing. This reduces the number of decoder ICs and I/O pins required. The high output current ensures each digit is bright enough even with a low duty cycle. The blanking input can be used to eliminate ghosting during multiplexing.
Recommended
Recommended Products Summary
Engineering reference data for CD4511B β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | CD4511BE | MC14511BCP | HCF4511BEY |
|---|---|---|---|---|
| Package | PDIP-16, SOIC-16, TSSOP-16 | PDIP-16 | PDIP-16 | PDIP-16 |
| Brand | Texas Instruments | Texas Instruments | onsemi | STMicroelectronics |
| Supply Voltage Range | 3V to 18V | 3V to 18V | 3V to 18V | 3V to 18V |
| Output Current (source) | 25 mA | 25 mA | 25 mA | 25 mA |
| Latch Enable | Yes | Yes | Yes | Yes |
| Lamp Test | Yes | Yes | Yes | Yes |
| Blanking | Yes | Yes | Yes | Yes |
| Operating Temperature Range | -55Β°C to +125Β°C | -55Β°C to +125Β°C | -55Β°C to +125Β°C | -55Β°C to +125Β°C |
Key Differentiators
- High output current capability (vs 74LS47)
- Wide supply voltage range (vs 74LS47)
- Low power consumption (vs 74LS47)
Design Notes
The CD4511B operates from 3V to 18V. Ensure the supply voltage is within this range and adequately decoupled with a 0.1Β΅F ceramic capacitor close to the VDD pin. The quiescent current is typically 80Β΅A at 5V, but increases with supply voltage and frequency. For battery-powered designs, consider using the latch enable to hold outputs and reduce dynamic power consumption.
Place current-limiting resistors (typically 220-470 ohms) in series with each segment output to prevent excessive current through the LEDs. The CD4511B can source up to 25mA per segment, so calculate resistor values based on LED forward voltage and desired brightness. Keep traces short to minimize noise and ensure proper grounding.
The blanking (BL) input is active high; when high, all outputs are off. Do not leave BL floating; tie it to ground for normal operation. Similarly, the lamp test (LT) input is active low; tie it high for normal operation. The latch enable (LE) should be low for transparent mode; when high, the outputs are latched. Ensure BCD inputs are valid (0-9); invalid codes (10-15) will blank the display.
Compliance Information
RoHS compliant per TI product page. Not AEC-Q100 qualified. Halogen-free status not specified in provided data.
