Texas Instruments CD4054BPWRG4

Overview

CD4054BPWRG4 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) controls for multiplexed display timing. Operates over −55°C to +125°C with supply voltage range 3 V to 18 V.

For engineers reviewing the CD4054BPWRG4 datasheet, CD4054BPWRG4 pinout, CD4054BPWRG4 application, or CD4054BPWRG4 equivalent, key selection criteria include its active-low open-drain segment outputs, built-in latch function, wide V_DD tolerance, and TSSOP-16 package suitability for space-constrained industrial panel meters and legacy instrumentation interfaces.

Technical Context

The CD4054BPWRG4 implements a synchronous latch followed by BCD-to-7-segment decoding logic, with all seven segment outputs (a–g) configured as open-drain N-channel MOSFETs capable of sinking up to 1.5 mA per segment at V_DD = 5 V. Its BL (blanking) input overrides decoding to force all outputs high, while PH (phase) enables alternating polarity drive for AC-coupled LED matrices.

This device belongs to the CD405xB family sharing identical logic architecture and DC electrical characteristics with CD4054B, CD4055B, and CD4056B - differing only in output configuration (e.g., CD4056B provides active-high outputs). All variants use standard CMOS process technology and exhibit typical propagation delays of 60 ns at V_DD = 10 V.

Key Specifications

Pinout & Package

TSSOP-16 package (PW suffix), 4.4 mm × 5.0 mm body, 1.2 mm max height, 0.65 mm lead pitch, RoHS-compliant NiPdAu lead 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 CD4054BM96, the CD4054BPWRG4 offers the smallest PCB footprint (4.4 × 5.0 mm), highest density packaging (90 pcs/tube), and optimized thermal profile for convection-cooled industrial displays - making it preferred for new compact designs where space and automated assembly efficiency are prioritized.

Availability

CD4054BPWRG4 is available at Aetrix Electronics and suitable for industrial panel meters, avionics annunciators, and energy meter digit drivers requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for CD4054BPWRG4 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 design and industrial-grade qualification.

The CD405xB series was developed to provide robust, latch-integrated display drivers for legacy and mission-critical instrumentation - emphasizing wide voltage operation, latch retention, and compatibility with both modern microcontrollers and vintage TTL systems.

FAQ

What is the maximum sink current per segment output on the CD4054BPWRG4?

The CD4054BPWRG4 segment outputs (pins 8–14) are open-drain N-channel MOSFETs rated for 1.5 mA sink current per segment at V_DD = 5 V and 25°C. This value decreases with rising temperature and lower V_DD; at V_DD = 15 V, the absolute maximum is 3.5 mA. External current-limiting resistors must be sized accordingly to avoid exceeding these limits in the CD4054BPWRG4.

Does the CD4054BPWRG4 require external pull-up resistors on its segment outputs?

Yes, the CD4054BPWRG4 segment outputs (a–g) are open-drain and require external pull-up resistors to V_DD or the LED anode supply rail. Typical values range from 1 kΩ to 10 kΩ depending on desired LED brightness and V_DD. No internal pull-ups exist - omitting external resistors will result in undefined or non-functional segment states in the CD4054BPWRG4.

Can the CD4054BPWRG4 drive common-anode LED displays?

No, the CD4054BPWRG4 is designed exclusively for common-cathode LED displays due to its active-low open-drain outputs. To drive common-anode configurations, an external inverting buffer or PNP transistor stage is required. The CD4056B variant - not the CD4054BPWRG4 - provides active-high outputs suitable for common-anode use.

What is the function of the PH (Phase) input on the CD4054BPWRG4?

The PH input on the CD4054BPWRG4 controls output polarity inversion logic: when PH = HIGH, segment outputs behave normally (active-low); when PH = LOW, the decoded segment pattern is inverted - useful for AC-coupled LED matrix drive to prevent electrochemical degradation. This feature is unique to the CD4054B/CD4056B family and is fully operational in the CD4054BPWRG4.

Is the CD4054BPWRG4 pin-compatible with the CD4054BE or CD4054BM96?

Yes, the CD4054BPWRG4 shares identical pinout, logic function, and electrical specifications with CD4054BE (PDIP-16) and CD4054BM96 (SOIC-16). All three are functionally interchangeable in circuit design - only package dimensions, thermal characteristics, and assembly methods differ. Layout adaptation is required solely for the TSSOP-16 footprint of the CD4054BPWRG4.