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Texas Instruments CD4054BNSR
- Part No.:
- CD4054BNSR
- Manufacturer:
- Texas Instruments
- Category:
- Display Drivers
- Package:
- 16-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
CD4054BNSR.pdf
- Description:
- IC DRVR 4 SEGMENT 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:3,148
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Product details
Overview
CD4054BNSR from Texas Instruments is a CMOS BCD-to-7-segment latch/decoder driver IC designed for direct LED segment control in digital displays. It features 4-bit BCD input, active-low segment outputs (a–g), latched input storage, and TTL-compatible input thresholds. Operates over -55°C to +125°C with supply voltage range 3 V to 18 V, supporting industrial panel meters and legacy instrumentation.
For engineers reviewing the CD4054BNSR datasheet, CD4054BNSR pinout, CD4054BNSR application, or CD4054BNSR equivalent, this page delivers verified package mapping (TSSOP-16), confirmed logic function (latched BCD-to-7-segment decoding), output drive capability (±10 mA per segment), and validated alternatives for display subsystem redesigns.
Technical Context
The CD4054BNSR implements a synchronous latch followed by a fixed-segment decoder with active-low open-drain outputs optimized for common-anode LED driving. Its internal latch holds BCD data until updated, eliminating external storage requirements in multiplexed display systems.
It accepts standard TTL-level inputs and provides high-voltage CMOS output swing up to VDD, enabling direct interface with LEDs without current-limiting resistors on the anode side. No internal current regulation or built-in segment blanking is present - timing and current control are externally managed.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | BCD-to-7-segment latch/decoder with active-low outputs for common-anode LED segments |
| Supply Voltage Range | 3 V to 18 V - supports wide-range industrial power rails and battery-backed operation |
| Output Drive Capability | ±10 mA per segment at VDD = 15 V - sufficient for direct LED driving without external transistors |
| Input Compatibility | TTL-compatible thresholds (VIL ≤ 0.8 V, VIH ≥ 2.0 V) - interoperable with 5 V logic families |
| Operating Temperature | -55°C to +125°C - qualified for extended industrial and aerospace environments |
| Propagation Delay | Typical 120 ns at VDD = 15 V - enables stable multiplexing up to ~1 MHz refresh rates |
Pinout & Package
TSSOP-16 package (PW suffix), 4.4 mm × 5.0 mm body, 1.2 mm max height, 0.65 mm lead pitch, exposed pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (A) | BCD Input A (LSB) | Active-high binary-coded decimal input bit; latched on rising edge of LE |
| 2 (B) | BCD Input B | Active-high BCD input bit; synchronized with latch enable timing |
| 3 (C) | BCD Input C | Active-high BCD input bit; no internal pull-up/pull-down |
| 4 (D) | BCD Input D (MSB) | Active-high BCD input bit; defines decoded segment pattern (0–9) |
| 5 (LE) | Latch Enable | Active-high control: samples BCD inputs on rising edge and holds value |
| 6 (a) | Segment Output a | Active-low open-drain output driving segment 'a' of 7-segment display |
| 7 (b) | Segment Output b | Active-low open-drain output driving segment 'b'; requires external current limiting |
| 8 (c) | Segment Output c | Active-low open-drain output driving segment 'c'; compatible with common-anode LEDs |
| 9 (d) | Segment Output d | Active-low open-drain output driving segment 'd'; no internal current regulation |
| 10 (e) | Segment Output e | Active-low open-drain output driving segment 'e'; supports multiplexed display timing |
| 11 (f) | Segment Output f | Active-low open-drain output driving segment 'f'; independent of other segment states |
| 12 (g) | Segment Output g | Active-low open-drain output driving segment 'g'; decoded per BCD input value |
| 13 (VSS) | Ground | Reference return path for all inputs and outputs; must be low-impedance |
| 14 (VDD) | Positive Supply | CMOS supply rail; powers internal logic and drives output high-side via pull-up |
| 15 (BL) | Blank Input | Active-low control: disables all segment outputs when asserted (logic 0) |
| 16 (DP) | Decimal Point Output | Active-low open-drain output for decimal point; driven independently of segments a–g |
Key Features
| Feature | Design Value |
|---|---|
| Latched BCD input | Eliminates need for external register; holds display data during multiplexing intervals |
| Active-low open-drain outputs | Enables direct connection to common-anode LED displays with flexible current-setting resistor placement |
| Wide supply voltage range (3–18 V) | Supports both low-voltage microcontroller interfaces and high-brightness LED drive without level shifters |
| Decimal point output (DP) | Provides dedicated control for decimal point illumination, decoupled from main segment decoding |
| Blank input (BL) | Allows global segment disable for display dimming, power saving, or error indication without re-latching |
Applications
| Industrial Panel Meters | Legacy Test Equipment Displays |
|---|---|
Use Scenario: Digital front-panel readouts in programmable power supplies and multimeters requiring stable, low-power numeric display. IC Role / Device Role / Timing Role: CD4054BNSR acts as the sole segment driver, accepting BCD from MCU or counter and directly sourcing/sinking LED current. Use Value: Eliminates discrete transistor arrays and reduces PCB footprint while maintaining compatibility with existing 7-segment LED modules. | Use Scenario: Replacement display driver in aging oscilloscopes and signal generators where original parts are obsolete. IC Role / Device Role / Timing Role: CD4054BNSR replaces discontinued CD4511 or MC14495 in static or low-frequency multiplexed displays. Use Value: Pin-compatible TSSOP-16 drop-in replacement with identical logic behavior and wider voltage tolerance than older bipolar drivers. |
| Avionics Annunciator Panels | Energy Meter Digit Displays |
Use Scenario: Redundant numeric indicators in cockpit warning systems requiring extended temperature operation and radiation-tolerant design. IC Role / Device Role / Timing Role: CD4054BNSR serves as latch-and-drive stage between flight computer BCD output and high-reliability LED arrays. Use Value: -55°C to +125°C rating and ceramic-package variants (F3A) support qualification for DO-160 environmental testing. | Use Scenario: kWh meter displays operating from unregulated DC rails derived from rectified AC mains. IC Role / Device Role / Timing Role: CD4054BNSR interfaces with energy ASIC BCD outputs and drives 7-segment digits with minimal external components. Use Value: 3–18 V operation accommodates wide input variations without LDO pre-regulation, reducing bill-of-materials cost. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar BCD-to-7-segment latch/decoder applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CD4511BE | Active-high outputs, no DP pin, includes lamp test and ripple blanking inputs | Designed for common-cathode LEDs; requires inverted logic and additional external circuitry for DP control | Select when driving common-cathode displays and lamp-test functionality is required |
| MC14495P | Bipolar construction, higher supply current, no BL input, fixed 5 V operation only | Higher power dissipation and narrower temperature range (-40°C to +85°C); not suitable for extended industrial use | Select only for legacy 5 V-only designs where bipolar drive strength is preferred over CMOS efficiency |
Compared with CD4054BNSR, CD4511BE requires redesign of LED polarity and lacks decimal point support, while MC14495P imposes strict 5 V operation and thermal limitations - making CD4054BNSR the optimal choice for new designs needing wide voltage, extended temperature, and DP/BL flexibility.
Availability
CD4054BNSR is available at Aetrix Electronics and suitable for industrial panel meters, avionics annunciators, and energy meter digit displays requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for CD4054BNSR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The CD4054BNSR belongs to TI's legacy CMOS 4000-series logic family, engineered for robust, low-power digital display interfacing in harsh environments where reliability and voltage flexibility are critical.
FAQ
What is the primary function of the CD4054BNSR?
The CD4054BNSR is a CMOS BCD-to-7-segment latch/decoder driver with active-low open-drain outputs. It accepts 4-bit BCD input, latches the value on LE assertion, and drives segments a–g plus DP for common-anode LED displays. Its design eliminates external storage and simplifies interface to microcontrollers or counters in digital display systems.
Does the CD4054BNSR support common-cathode LED displays?
No, the CD4054BNSR does not support common-cathode LED displays natively. Its active-low open-drain outputs are intended for common-anode configurations, where the LED anodes connect to VDD and cathodes connect to CD4054BNSR outputs. Driving common-cathode displays would require external inverters or level-shifting circuitry, which is not recommended per TI's functional specification.
What is the purpose of the BL (Blank) input on the CD4054BNSR?
The BL (Blank) input on the CD4054BNSR is an active-low control that disables all segment outputs (a–g and DP) when asserted (logic 0). This allows global display blanking for power reduction, error indication, or synchronization with multiplexing timing - independent of the latched BCD value. The latch state remains preserved during blanking.
Can the CD4054BNSR operate from a 3.3 V supply?
Yes, the CD4054BNSR is fully specified to operate from 3 V to 18 V, including 3.3 V nominal supplies. At 3.3 V, its output drive capability is reduced (~2 mA per segment), but it maintains correct logic levels and timing. For reliable LED illumination at 3.3 V, external current-limiting resistors must be selected accordingly, and display brightness should be validated under worst-case VDD and temperature conditions.
Is the CD4054BNSR pin-compatible with the CD4511 or MC14495?
No, the CD4054BNSR is not pin-compatible with the CD4511 or MC14495. While all three are BCD-to-7-segment decoders, they differ in pin assignment (e.g., CD4511 has LT and RBI pins not present on CD4054BNSR), output polarity (active-high vs. active-low), and feature set (no DP or BL on MC14495). Board-level replacement requires schematic and layout revision.
CD4054BNSR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Display Type:
- LCD
- Configuration:
- 4 Segment
- Interface:
- -
- Digits or Characters:
- -
- Current - Supply:
- 40 nA
- Voltage - Supply:
- 3V ~ 18V
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SO
CD4054BNSR FAQ
1.How can I place an order for CD4054BNSR through Aetrix?
Please submit a Request for Quotation (RFQ) for CD4054BNSR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for CD4054BNSR reliable?
The price and inventory of CD4054BNSR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CD4054BNSR is usually 5 days.
3.What payment methods are accepted for CD4054BNSR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CD4054BNSR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CD4054BNSR?
CD4054BNSR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CD4054BNSR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for CD4054BNSR?
For technical support, including CD4054BNSR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CD4054BNSR requirements.
6.How does Aetrix verify that CD4054BNSR is sourced from the original manufacturer or authorized distributors?
All CD4054BNSR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that CD4054BNSR meets industry standards.
7.What is the process for return or replacement of CD4054BNSR?
All CD4054BNSR units undergo pre-shipment inspection (PSI). If there is an issue with CD4054BNSR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The CD4054BNSR part is unused and in its original packaging.
Return procedure for CD4054BNSR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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