Texas Instruments CD4054BPWRE4

Overview

CD4054BPWRE4 from Texas Instruments is a CMOS BCD-to-7-segment latch/decoder driver IC designed for direct LED segment control in digital displays. It accepts 4-bit BCD input, latches data, decodes to active-low 7-segment outputs (a–g), and features blanking (BL) and phase (PH) inputs for display multiplexing and polarity control. Operates over –55°C to +125°C with supply voltage range 3 V to 18 V.

For engineers reviewing the CD4054BPWRE4 datasheet, CD4054BPWRE4 pinout, CD4054BPWRE4 application, or CD4054BPWRE4 equivalent, this device is selected for low-power, high-voltage-tolerant LED display interfaces requiring latch+decode integration in space-constrained industrial and instrumentation panels.

Technical Context

The CD4054BPWRE4 implements synchronous latching followed by static BCD-to-7-segment decoding with open-drain outputs capable of sinking up to 10 mA per segment at 15 V. Its PH input selects common-anode (PH = HIGH) or common-cathode (PH = LOW) LED drive configuration, while BL enables global segment blanking independent of latched data.

Unlike the CD4056B (which includes built-in current limiting), the CD4054BPWRE4 relies on external series resistors for LED current control and does not integrate display memory beyond its internal 4-bit latch. It shares pin compatibility and functional architecture with the CD4054B family but is specifically packaged in a 16-pin TSSOP (PW) variant with RoHS-compliant NiPdAu lead finish.

Key Specifications

Pinout & Package

TSSOP-16 (PW) package: 4.4 mm × 5.0 mm body, 0.65 mm pitch, 1.2 mm max height, exposed pad not electrically connected. RoHS-compliant NiPdAu finish, MSL Level-1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar BCD-to-7-segment latch/decoder applications.

Compared with CD4054BE and CD4056BMT, the CD4054BPWRE4 delivers modern SMT manufacturability, guaranteed RoHS compliance, and full 10 mA segment drive-making it the optimal choice for new designs requiring long-term component availability and industrial-grade thermal performance.

Availability

CD4054BPWRE4 is available at Aetrix Electronics and suitable for industrial panel meters, automotive instrument clusters, and test equipment requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for CD4054BPWRE4 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 leader specializing in analog, embedded processing, and logic ICs, with decades of heritage in CMOS logic families including the 4000-series.

The CD4054BPWRE4 belongs to TI's legacy 4000B-series CMOS logic portfolio, engineered for robustness in harsh environments and designed to serve as a reliable, drop-in upgrade path for 4054-based display subsystems in industrial and transportation systems.

FAQ

What is the maximum segment output current specification for CD4054BPWRE4?

The CD4054BPWRE4 is specified to sink at least 10 mA per segment output (pins a–g) at V_DD = 15 V and T_A = 25°C. This value decreases slightly at higher temperatures or lower supply voltages; design margin should include derating to 8 mA for continuous operation across –55°C to +125°C. External series resistors must be sized accordingly to limit LED current and ensure thermal stability of the CD4054BPWRE4.

Does CD4054BPWRE4 support direct connection to common-cathode LED displays?

Yes, CD4054BPWRE4 supports common-cathode LED displays when the PH pin is held LOW. In this mode, segment outputs (a–g) become active-low and sink current from LED anodes tied to V_DD, while cathodes connect to ground. For common-anode configurations, set PH HIGH so outputs sink current from LED cathodes tied to ground. No external transistor inversion is needed - polarity is fully controlled by the PH pin.

Is CD4054BPWRE4 pin-compatible with CD4054BE?

Yes, CD4054BPWRE4 is functionally and pinout-compatible with CD4054BE, sharing identical 16-pin assignment and logic behavior. However, the PW package has 0.65 mm pitch versus the BE's 2.54 mm DIP pitch, requiring PCB footprint adaptation. Signal timing, voltage thresholds, and DC parameters match exactly - only mechanical mounting differs.

What is the purpose of the BL (blanking) input on CD4054BPWRE4?

The BL input on CD4054BPWRE4 is an active-HIGH global blanking control that forces all segment outputs (a–g) into high-impedance (open-drain off) state, regardless of latched BCD data or PH setting. This enables flicker-free multiplexing across multiple digits, rapid display shutdown during fault conditions, or synchronization with external timing signals - all without altering the internal latch contents.

Can CD4054BPWRE4 operate from a 3.3 V supply?

Yes, CD4054BPWRE4 is fully specified down to 3 V supply voltage. At 3.3 V, output sink current capability reduces to approximately 1.2 mA per segment (per TI characterization data), which is sufficient for low-current indicator LEDs or high-efficiency green/red types. Logic inputs remain compatible with 3.3 V CMOS levels, and propagation delays increase modestly - typical t_PLH/t_PHL remains under 120 ns at 3.3 V and 25°C.