Texas Instruments CD4511BPWG4

Overview

CD4511BPWG4 from Texas Instruments is a CMOS BCD-to-7-segment latch decoder driver designed for directly driving common-cathode LED displays, low-voltage fluorescent displays, incandescent displays, and multiplexed numeric display circuits. The device accepts a 4-bit BCD input, stores the input code through an internal latch, decodes the value, and drives seven display segment outputs for decimal digit indication.

As part of the Texas Instruments CD4000 logic portfolio, CD4511BPWG4 combines BCD input decoding, input latches for BCD code storage, lamp-test control, blanking control, high output sourcing capability up to 25mA, and 5V, 10V, and 15V parametric ratings in a 16-pin TSSOP package. For engineers reviewing the CD4511BPWG4 datasheet, CD4511BPWG4 pinout, CD4511BPWG4 application, or CD4511BPWG4 equivalent, this device is widely used in digital counters, panel meters, numeric indicators, appliance displays, industrial control panels, instrumentation readouts, and common-cathode 7-segment LED display systems.

Technical Context

In numeric display circuits, CD4511BPWG4 functions as a complete BCD-to-7-segment latch decoder driver. The four BCD inputs represent decimal values 0 through 9, while the internal decoder translates the BCD code into seven segment-control outputs. The outputs are intended for common-cathode displays, where the IC sources current into the selected LED segments.

The device includes latch enable or strobe control, allowing the BCD input code to be stored and displayed even if the input bus changes. The lamp test input can force the display segments on for display verification, while the blanking input can turn off the display or support intensity modulation when driven by an external signal.

CD4511BPWG4 blanks the 7-segment outputs for BCD input codes greater than 1001, helping prevent undefined numeric display patterns for invalid BCD states. External current-limiting resistors are still normally required in LED display applications, and display current, supply voltage, package dissipation, and segment brightness should be verified during circuit design.

Key Specifications

Pinout & Package

The CD4511BPWG4 pinout uses a 16-pin TSSOP package with four BCD inputs, seven segment-output pins, latch enable, blanking, lamp test, VDD, and VSS. The segment outputs drive common-cathode display segments and should be connected through suitable current-limiting resistors unless the final display architecture provides controlled current limiting elsewhere.

For PCB implementation, VDD should be bypassed close to the device, BCD input lines should be routed with clean logic transitions, and display segment traces should be sized according to current requirements. When multiple digits are multiplexed, external digit-selection circuitry and timing must be designed so that latch, blanking, and segment current limits remain within the operating conditions.

Key Features

• BCD-to-7-segment latch decoder driver for common-cathode displays.
• Internal BCD input latches store the displayed digit code.
• High output sourcing capability supports direct segment drive in suitable designs.
• Lamp test input supports quick segment verification during production or service.
• Blanking input supports display shutoff or external intensity modulation.
• Outputs blank for invalid BCD input codes greater than 9.
• 5V, 10V, and 15V parametric ratings support CD4000 logic systems.
• CMOS logic provides low quiescent power dissipation and high noise immunity.
• Suitable for common-cathode LED, low-voltage fluorescent, and incandescent displays.
• 16-pin TSSOP package supports compact surface-mount display-control layouts.

Applications

Equivalent & Alternatives

When evaluating CD4511BPWG4 equivalent devices, engineers should compare display type, output polarity, output current, supply-voltage range, latch behavior, blanking and lamp-test functions, package footprint, operating temperature, and common-cathode versus common-anode compatibility.

Compared with MC14511B, CD4511BPWG4 is optimized for Texas Instruments CD4000-family display-driver sourcing and PW TSSOP package integration. CD4511BPWG4 vs SN74LS47 selection depends primarily on display type and output polarity: use CD4511BPWG4 for common-cathode displays and select a common-anode driver when the display hardware requires active-low segment outputs.

Quality

CD4511BPWG4 should be sourced as original Texas Instruments components through traceable and controlled supply channels. Quality verification procedures may include package inspection, top-mark validation, solderability testing, pin continuity checks, BCD decoding verification, latch-function testing, blanking and lamp-test validation, output-drive measurement, and incoming inspection according to standard logic and display-driver production requirements.

Because the device directly interfaces with display loads, system reliability depends on correct display type, segment current limiting, package thermal conditions, valid BCD timing, stable VDD decoupling, latch-control timing, and proper use of lamp-test and blanking pins. Traceable sourcing supports manufacturing quality and reduces counterfeit supply-chain risk for display-control production programs.

Availability

CD4511BPWG4 available at Aetrix Electronics and suitable for common-cathode LED displays, digital counters, panel meters, numeric indicators, instrumentation readouts, appliance displays, and embedded display-control systems requiring stable component supply and repeatable production support.

Supply support may include scheduled delivery planning, volume procurement support, BOM continuity assistance, traceable sourcing management, and long-term availability support for OEM manufacturers, display-module builders, instrumentation developers, industrial-control designers, and electronics production programs.

For production deployment, confirming display type, segment-current requirement, package footprint, supply voltage, latch-control behavior, blanking logic, and sourcing continuity helps reduce procurement risk and improve manufacturing stability.

Manufacturer

Texas Instruments is a semiconductor manufacturer specializing in analog ICs, embedded processors, power-management devices, standard logic, display-interface devices, signal-chain products, motor drivers, and industrial semiconductor solutions for automotive, industrial, communication, consumer, and embedded-system applications.

The Texas Instruments standard logic and CD4000 portfolio focuses on CMOS logic functions, display decoder drivers, counters, latches, gates, buffers, broad-voltage operation, low-power behavior, and long-term supply continuity for embedded logic, display control, industrial panels, and general-purpose digital systems.

FAQ

What is CD4511BPWG4 used for?

CD4511BPWG4 is used to decode a 4-bit BCD input and drive a common-cathode 7-segment display in counters, panel meters, numeric indicators, instrumentation readouts, appliance displays, and embedded display-control circuits.

Where can I find the CD4511BPWG4 datasheet download?

The CD4511BPWG4 datasheet is available from Texas Instruments and includes the functional description, pin configuration, truth table, latch behavior, lamp-test and blanking functions, electrical characteristics, switching data, and package information.

What should be considered in CD4511BPWG4 PCB design?

PCB implementation should provide close VDD decoupling, correct BCD input routing, suitable current-limiting resistors for LED segments, proper common-cathode display connection, and verified latch, lamp-test, and blanking control timing.

Does CD4511BPWG4 drive common-cathode displays?

Yes. CD4511BPWG4 is intended for common-cathode 7-segment display applications, with outputs that source current into the selected display segments.

What are common CD4511BPWG4 equivalent solutions?

Common alternatives include CD4511BPWRG4, MC14511B, HEF4511BT, and other 4511-family BCD-to-7-segment latch decoder drivers depending on package, display type, output-current requirement, supply voltage, and sourcing continuity.