CD4056BPWR Equivalent & Substitute Parts

Part Overview

The CD4056BPWR is a 7-segment LCD driver IC manufactured by Texas Instruments, designed to drive a single digit display using BCD interface logic. This device is discontinued at DiGi Electronics, making equivalent or substitute parts necessary for new designs or production requirements. The CD4056BPWR operates across a wide supply voltage range (3V to 18V) with minimal current consumption (40 nA), making it suitable for battery-powered and low-power applications requiring single-digit display control.

Substiute Parts

CD4056BPWR

Texas InstrumentsIn Stock: 784CD4056BPWR Datasheet

Current PartRFQ

ICM7211AMIPLZ

Renesas Electronics CorporationIn Stock: 2235ICM7211AMIPLZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD4056BPWR is constrained by the following critical parameters:

• Display Interface: BCD input logic for 7-segment control
• Display Capacity: Single digit operation
• Supply Voltage Range: 3V to 18V operational window
• Mounting Technology: Surface mount package requirement
• Regulatory Compliance: ROHS3 compliance and REACH unaffected status

The ICM7211AMIPLZ is listed as a manufacturer-recommended substitute. However, this part operates as a 4-digit driver with a through-hole 40-DIP package and a narrower supply voltage range (3V to 6V). Direct substitution requires design-level evaluation due to differences in digit capacity, mounting type, and voltage specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the CD4056BPWR and ICM7211AMIPLZ maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for equivalent component selection.

The CD4056BPWR is optimized for single-digit display applications with extended supply voltage tolerance (3V to 18V) and wide operating temperature range (-55°C to 125°C). The surface mount 16-TSSOP package supports compact PCB layouts.

The ICM7211AMIPLZ is a 4-digit driver with through-hole mounting, narrower voltage specification (3V to 6V), and reduced temperature range (-20°C to 85°C). Selection of this substitute requires confirmation that the application design accommodates multi-digit capability, through-hole mounting, and the constrained voltage and temperature operating windows.

Frequently Asked Questions (FAQ)

Q: Can the ICM7211AMIPLZ directly replace the CD4056BPWR in existing designs?

A: Direct replacement requires design verification. The ICM7211AMIPLZ is a 4-digit driver versus the 1-digit CD4056BPWR, uses through-hole mounting instead of surface mount, and operates within a narrower supply voltage range (3V to 6V versus 3V to 18V). PCB layout and circuit topology modifications may be necessary.

Q: What is the primary functional difference between these parts?

A: The CD4056BPWR drives a single 7-segment digit, while the ICM7211AMIPLZ drives four 7-segment digits. Both use BCD interface logic and LCD display technology.

Q: Are there temperature or voltage constraints when using the ICM7211AMIPLZ as a substitute?

A: Yes. The ICM7211AMIPLZ operates at -20°C to 85°C (versus -55°C to 125°C for the CD4056BPWR) and requires supply voltage between 3V and 6V (versus 3V to 18V). Applications requiring extended temperature or voltage ranges must remain with the CD4056BPWR or identify alternative single-digit drivers.

Q: Do both parts meet current regulatory standards?

A: Yes. Both the CD4056BPWR and ICM7211AMIPLZ are ROHS3 compliant and REACH unaffected, meeting current electronic component regulatory requirements.

Q: What mounting considerations apply to substitution?

A: The CD4056BPWR uses surface mount 16-TSSOP packaging, while the ICM7211AMIPLZ uses through-hole 40-DIP packaging. PCB design and assembly process compatibility must be confirmed before substitution.