CD74HC4538PWR Equivalent & Substitute Parts Engineering Reference

Part Overview

CD74HC4538PWR is a monostable multivibrator logic IC from Texas Instruments, featuring 21 ns propagation delay in a 16-TSSOP surface-mount package. It is active and compliant with ROHS3 and REACH standards. Alternative models may be required for supply chain flexibility, lifecycle management, or if specific compliance or inventory specifications dictate.

Substiute Parts

CD74HC4538PWR

Texas InstrumentsIn Stock: 10499CD74HC4538PWR Datasheet

Current PartRFQ

74HC4538DB,112

Nexperia USA Inc.In Stock: 97374HC4538DB,112 Datasheet

MFR RecommendedRFQ

74HC4538PW,118

Nexperia USA Inc.In Stock: 1045774HC4538PW,118 Datasheet

MFR RecommendedRFQ

74HC4538PW-Q100,11

Nexperia USA Inc.In Stock: 295774HC4538PW-Q100,11 Datasheet

MFR RecommendedRFQ

MC74HC4538ADTR2G

onsemiIn Stock: 16531MC74HC4538ADTR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for CD74HC4538PWR are grouped strictly by matching the following key electrical and mechanical parameters: logic type (monostable), number of independent circuits (2), supply voltage range (2 V ~ 6 V), output current specifications (5.2mA, 5.2mA), mounting type (surface mount), package form factor (16-TSSOP or equivalent), and applicable compliance standards (ROHS3, REACH). Substitution eligibility also considers propagation delay, Schmitt Trigger presence where specified, and operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

For substitute selection, confirm part status as active for production use. All listed substitutes adhere to ROHS3 and REACH regulatory standards and maintain MSL 1 (Unlimited), matching compliance requirements. Substitute parts with "Obsolete" or "Last Time Buy" status should only be used for existing designs or in situations where lifecycle fulfillment is acceptable. Automotive grade (AEC-Q100) substitutes are available for certain application environments.

Frequently Asked Questions (FAQ)

Q1: What parameters are critical for substituting CD74HC4538PWR?
Key substitution parameters are logic type (monostable), number of independent circuits (2), electrical specifications (propagation delay, output current, supply voltage), packaging (16-TSSOP or compatible), mounting type (surface mount), and compliance with ROHS3 and REACH.

Q2: Are all substitute parts pin-compatible with CD74HC4538PWR?
All substitutes specified are provided in the 16-TSSOP package, suitable for direct surface mount replacement. Compare exact package dimensions for alternate packages such as SSOP.

Q3: How does propagation delay affect selection?
Propagation delay values among substitutes range from 21 ns to 30 ns. Select a substitute that matches the timing requirements of the intended application.

Q4: What about Schmitt Trigger input compatibility?
CD74HC4538PWR and MC74HC4538ADTR2G feature Schmitt Trigger inputs. Substitute selections without this input should be reviewed for suitability in applications requiring this feature.

Q5: Are substitutes compliant with environmental and safety standards?
All substitutes listed are ROHS3 compliant, REACH unaffected, and have MSL 1 (Unlimited), meeting commonly required environmental and safety compliance standards.

Q6: Are automotive grade substitutes available?
74HC4538PW-Q100,11 is designated with automotive grade and AEC-Q100 qualification. Verify application requirements for automotive certifications before selection.

Q7: What package considerations should be reviewed for substitution?
The primary package for substitution is 16-TSSOP with a 0.173" (4.40mm) width. If alternate packages such as 16-SSOP are considered, ensure form-factor compatibility with the PCB footprint.