CD4047BMT Equivalent & Substitute Parts

Part Overview

The CD4047BMT is a monostable multivibrator logic integrated circuit manufactured by Texas Instruments, housed in a 14-SOIC surface mount package. This device is classified as discontinued at DiGi Electronics, making equivalent and substitute parts necessary for ongoing design support and procurement. The CD4047BMT belongs to the 4000B logic series and operates across a wide supply voltage range of 3V to 18V, making it suitable for diverse industrial and consumer applications requiring astable or monostable multivibrator functionality.

Substiute Parts

CD4047BMT

Texas InstrumentsIn Stock: 698CD4047BMT Datasheet

Current PartRFQ

CD4047BM96

Texas InstrumentsIn Stock: 37847CD4047BM96 Datasheet

DirectRFQ

HEF4047BT,653

Nexperia USA Inc.In Stock: 2216HEF4047BT,653 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the CD4047BMT is determined by strict alignment of the following electrical and mechanical parameters:

Critical Substitution Parameters:

• Logic Type: Astable and Monostable capability
• Package / Case: 14-SOIC surface mount form factor
• Voltage - Supply: Operating range compatibility
• Operating Temperature: Temperature range coverage
• Series: 4000B logic family membership
• Independent Circuits: Single circuit configuration
• RoHS Status: ROHS3 compliance requirement

Substitute parts must maintain identical or superior performance within these defined parameters. Propagation delay, output current, and supply voltage ranges are primary technical criteria for functional equivalence. Parts are grouped by direct manufacturer equivalence (same manufacturer, different packaging or product status) and cross-manufacturer alternatives (different manufacturer, same functional specification).

Parameter Comparison

Engineering Selection Recommendations

CD4047BM96 (Direct Equivalent - Recommended Primary Substitute)

The CD4047BM96 is the direct equivalent substitute for the CD4047BMT. Both parts are manufactured by Texas Instruments, share identical electrical specifications (80 ns propagation delay, 3V to 18V supply range, -55°C to 125°C operating temperature), and are housed in the same 14-SOIC package. The CD4047BM96 maintains active product status with significantly higher inventory availability (37,771 pieces in stock versus 628 pieces for the main part). This part is the optimal choice for direct replacement in existing designs without circuit modification.

HEF4047BT,653 (Cross-Manufacturer Alternative)

The HEF4047BT,653 manufactured by Nexperia USA Inc. provides a cross-manufacturer alternative within the 4000B logic series. This part maintains the same 14-SOIC package and astable/monostable logic functionality. Key differences include faster propagation delay (50 ns versus 80 ns), narrower supply voltage range (4.5V to 15.5V versus 3V to 18V), and reduced operating temperature range (-40°C to 85°C versus -55°C to 125°C). The HEF4047BT,653 is suitable for applications where the narrower operating parameters are acceptable and faster switching performance is beneficial. All three parts maintain ROHS3 compliance and are classified as unaffected by REACH regulations.

Frequently Asked Questions (FAQ)

Q: Can the CD4047BM96 be used as a direct replacement for the CD4047BMT?

A: Yes. The CD4047BM96 is a direct equivalent substitute. Both parts are manufactured by Texas Instruments and share identical electrical specifications, package form factor, and operating parameters. No circuit modification is required.

Q: What are the key differences between the CD4047BMT and HEF4047BT,653?

A: The primary differences are manufacturer (Texas Instruments versus Nexperia), propagation delay (80 ns versus 50 ns), supply voltage range (3V-18V versus 4.5V-15.5V), and operating temperature range (-55°C to 125°C versus -40°C to 85°C). The HEF4047BT,653 offers faster switching but operates within narrower electrical and thermal limits.

Q: Is the HEF4047BT,653 compatible with designs specified for the CD4047BMT?

A: Compatibility depends on circuit requirements. If the design operates within the HEF4047BT,653 supply voltage range (4.5V to 15.5V) and temperature range (-40°C to 85°C), and does not require the extended low-voltage capability (3V minimum) of the CD4047BMT, the HEF4047BT,653 is compatible. Designs requiring operation below 4.5V supply voltage or below -40°C ambient temperature must use the CD4047BM96.

Q: Are all substitute parts RoHS compliant?

A: Yes. The CD4047BMT, CD4047BM96, and HEF4047BT,653 are all ROHS3 compliant and unaffected by REACH regulations.

Q: What is the package compatibility between these parts?

A: All three parts use the 14-SOIC (0.154", 3.90mm width) surface mount package. They are mechanically and electrically interchangeable at the package level, allowing direct PCB footprint compatibility.

Q: Why is the CD4047BMT discontinued?

A: The CD4047BMT is discontinued at DiGi Electronics. The CD4047BM96, also manufactured by Texas Instruments, remains in active production and serves as the recommended replacement for ongoing procurement and new designs.