CD4520BME4 Equivalent & Substitute Parts

Part Overview

The CD4520BME4 is a binary counter logic IC manufactured by Texas Instruments, part of the 4000B series. This component functions as a dual 4-bit binary counter with asynchronous reset and synchronous timing, operating across a wide voltage range of 3V to 18V. The CD4520BME4 is currently discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design support and procurement.

Substiute Parts

CD4520BME4

Texas InstrumentsIn Stock: 1190CD4520BME4 Datasheet

Current PartRFQ

CD4520BM96

Texas InstrumentsIn Stock: 17637CD4520BM96 Datasheet

DirectRFQ

CD4520BM

Texas InstrumentsIn Stock: 2000CD4520BM Datasheet

MFR RecommendedRFQ

HEF4520BT,653

Nexperia USA Inc.In Stock: 2533HEF4520BT,653 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD4520BME4 is determined by strict equivalence across the following critical parameters:

• Logic Type: Binary Counter (2 Element, 4 Bit)
• Direction: Up counting only
• Reset: Asynchronous
• Timing: Synchronous
• Trigger Type: Positive and Negative edge triggering
• Package / Case: 16-SOIC form factor
• Mounting Type: Surface Mount

Substitute parts must maintain identical functional specifications for counter operation, bit width, and element count. Voltage supply range, operating temperature, and count rate may vary within acceptable engineering tolerances for the application. Package compatibility is mandatory for direct PCB replacement without layout modification.

Parameter Comparison

Engineering Selection Recommendations

CD4520BM96 (Texas Instruments, Active Status) Direct manufacturer substitute with identical electrical and mechanical specifications. Supplied in Tape & Reel packaging with 17,600 units in stock. Recommended as primary replacement for new procurement and design continuation.

CD4520BM (Texas Instruments, Obsolete Status) Manufacturer-recommended substitute with identical functional parameters. Supplied in Tube packaging with 1,970 units in stock. Suitable for legacy system support where existing inventory exists, though long-term availability is limited.

HEF4520BT,653 (Nexperia USA Inc., Active Status) Cross-manufacturer substitute from Nexperia with identical counter architecture and package form factor. Operates at higher count rate (40 MHz vs. 8 MHz) and narrower voltage range (4.5V–15.5V vs. 3V–18V). Suitable for applications within the specified voltage window and where higher speed performance is acceptable. ROHS3 compliant with unlimited MSL rating.

Frequently Asked Questions (FAQ)

Q: Can CD4520BM96 directly replace CD4520BME4 on existing PCBs? A: Yes. CD4520BM96 maintains identical package form factor (16-SOIC), pin configuration, and electrical specifications. No PCB layout modification is required.

Q: What is the primary difference between CD4520BM96 and CD4520BM? A: Both parts are functionally equivalent. The primary difference is packaging format: CD4520BM96 is supplied in Tape & Reel, while CD4520BM is supplied in Tube. CD4520BM96 is currently active in production; CD4520BM is obsolete.

Q: Is HEF4520BT,653 a suitable replacement for all applications? A: HEF4520BT,653 is functionally compatible for counter operation but operates at a higher count rate (40 MHz) and requires a minimum supply voltage of 4.5V. Applications requiring operation below 4.5V or the full 3V–18V range of the original part must use Texas Instruments alternatives.

Q: Are all substitute parts ROHS3 compliant? A: Yes. CD4520BM96, CD4520BM, and HEF4520BT,653 are all ROHS3 compliant with MSL rating of 1 (Unlimited).

Q: Which substitute part has the best long-term availability? A: CD4520BM96 (Texas Instruments, Active Status) and HEF4520BT,653 (Nexperia, Active Status) are both in active production. CD4520BM is obsolete and should not be selected for new designs requiring long-term support.