CD4543BPWR Equivalent & Substitute Parts

Part Overview

The CD4543BPWR is an active LCD driver IC manufactured by Texas Instruments, designed for 7-segment single-digit display applications. This Surface Mount device operates across a wide voltage range of 3V to 18V with minimal supply current of 40 nA, making it suitable for battery-powered and low-power applications. The part is in active production status with full RoHS3 compliance and unlimited moisture sensitivity rating. Alternative components may be required due to application-specific requirements such as multi-digit display support, different mounting technologies, or modified operating temperature ranges.

Substiute Parts

CD4543BPWR

Texas InstrumentsIn Stock: 2491CD4543BPWR Datasheet

Current PartRFQ

ICM7211AMIPLZ

Renesas Electronics CorporationIn Stock: 2235ICM7211AMIPLZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD4543BPWR is determined by the following critical parameters: LCD display driver functionality, BCD interface compatibility, 7-segment configuration support, and regulatory compliance status. The CD4543BPWR is optimized for single-digit applications with extended voltage range (3V–18V) and wide temperature operation (-55°C to 125°C). Substitute parts must maintain LCD driver capability and BCD interface protocol. However, substitutes may differ in digit capacity, mounting technology, voltage range, temperature range, and package form factor. The ICM7211AMIPLZ represents a functionally related alternative designed for multi-digit (4-digit) display applications with different electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the CD4543BPWR and ICM7211AMIPLZ maintain active product status and full RoHS3 compliance, ensuring regulatory alignment for current applications. Selection between these components depends on specific application requirements:

The CD4543BPWR is appropriate for single-digit display applications requiring Surface Mount assembly, extended voltage operation (3V–18V), wide temperature range (-55°C to 125°C), and minimal supply current (40 nA). This configuration suits battery-powered and temperature-critical applications.

The ICM7211AMIPLZ is appropriate for multi-digit (4-digit) display applications requiring Through Hole assembly, standard voltage operation (3V–6V), and standard temperature range (-20°C to 85°C). This configuration suits applications where multi-digit display capability and through-hole mounting are design requirements.

Both components share identical regulatory status (ROHS3 Compliant, REACH Unaffected, EAR99 classification) and identical HTSUS coding (8542.39.0001), confirming equivalent compliance profiles.

Frequently Asked Questions (FAQ)

Q: Can the ICM7211AMIPLZ directly replace the CD4543BPWR in existing designs?

A: Direct replacement is not recommended without design modification. The ICM7211AMIPLZ differs in mounting technology (Through Hole vs. Surface Mount), digit capacity (4 digits vs. 1 digit), voltage range (3V–6V vs. 3V–18V), temperature range (-20°C to 85°C vs. -55°C to 125°C), and package footprint (40-DIP vs. 16-TSSOP). Application requirements must be evaluated against these parameter differences.

Q: What are the key compatibility criteria for LCD driver substitution?

A: LCD driver substitution requires matching display type (LCD), segment configuration (7-segment), and interface protocol (BCD). Both the CD4543BPWR and ICM7211AMIPLZ satisfy these core criteria. Additional compatibility depends on digit capacity requirements, voltage supply constraints, temperature operating range, and mounting technology availability in the target PCB design.

Q: How do voltage supply ranges affect substitution feasibility?

A: The CD4543BPWR operates across 3V to 18V, supporting applications with higher supply voltages or wider voltage tolerance. The ICM7211AMIPLZ operates across 3V to 6V, limiting use to standard logic-level voltage supplies. Applications requiring operation above 6V cannot use the ICM7211AMIPLZ as a substitute.

Q: What is the impact of mounting type differences?

A: The CD4543BPWR uses Surface Mount technology (16-TSSOP package), suitable for automated assembly and compact PCB designs. The ICM7211AMIPLZ uses Through Hole technology (40-DIP package), requiring manual insertion or specialized through-hole assembly equipment. PCB design and manufacturing capabilities must accommodate the selected mounting technology.

Q: Are there temperature range limitations for substitution?

A: The CD4543BPWR supports -55°C to 125°C operation, covering extended industrial and automotive temperature ranges. The ICM7211AMIPLZ supports -20°C to 85°C operation, covering standard commercial temperature ranges. Applications requiring operation below -20°C or above 85°C cannot use the ICM7211AMIPLZ as a substitute.