DM74ALS573BWM Equivalent & Substitute Parts

Part Overview

The DM74ALS573BWM is a D-Type Transparent Latch logic IC with 1 channel, 8:8 configuration, and tri-state output capability. Manufactured by onsemi in a 20-SOIC package, this component is classified as obsolete. Due to its discontinued status, identifying equivalent and substitute parts from active manufacturers is essential for design continuity and procurement planning.

Substiute Parts

DM74ALS573BWM

onsemiIn Stock: 26750DM74ALS573BWM Datasheet

Current PartRFQ

SN74ALS573CDWR

Texas InstrumentsIn Stock: 2822SN74ALS573CDWR Datasheet

DirectRFQ

SN74ALS573CNSR

Texas InstrumentsIn Stock: 846SN74ALS573CNSR Datasheet

SimilarRFQ

SN74ALS573CDW

Texas InstrumentsIn Stock: 2255SN74ALS573CDW Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the DM74ALS573BWM is determined by strict equivalence across the following parameters: logic type (D-Type Transparent Latch), circuit configuration (8:8), output type (tri-state), supply voltage range (4.5V ~ 5.5V), propagation delay (2ns), output current specifications (2.6mA high, 24mA low), operating temperature range (0°C ~ 70°C), and mounting type (surface mount).

The substitute parts are grouped into three categories based on packaging and product status:

Direct Manufacturer Equivalent (SN74ALS573CDWR): Identical electrical specifications and primary package format (20-SOIC, 0.295" width) with active product status and tape & reel packaging.

Similar Manufacturer Part (SN74ALS573CNSR): Maintains all electrical specifications but uses a narrower 20-SO package variant (0.209" width instead of 0.295"), also with active status and tape & reel packaging.

Parametric Equivalent (SN74ALS573CDW): Identical electrical specifications and package dimensions (20-SOIC, 0.295" width) with last-time-buy status and tube packaging.

Parameter Comparison

Engineering Selection Recommendations

SN74ALS573CDWR is the primary substitute for the DM74ALS573BWM. This Texas Instruments part maintains identical electrical specifications and package dimensions while offering active product status and ROHS3 compliance. The tape & reel packaging format supports automated assembly processes.

SN74ALS573CDW serves as an alternative when tube packaging is preferred or when last-time-buy inventory is available. Electrical specifications and primary package dimensions remain identical to the original part, with ROHS3 compliance confirmed.

SN74ALS573CNSR is suitable only when the narrower 20-SO package variant (0.209" width) is compatible with the PCB layout. All electrical parameters remain equivalent, and the part carries active status with ROHS3 compliance. PCB footprint verification is required before selection.

All three substitutes are manufactured by Texas Instruments and comply with REACH and EAR99 regulations, matching the original part's compliance profile.

Frequently Asked Questions (FAQ)

Q: Can SN74ALS573CNSR be used as a direct replacement for DM74ALS573BWM?

A: SN74ALS573CNSR is electrically equivalent but uses a narrower package variant (0.209" width versus 0.295"). Direct PCB footprint compatibility must be verified. If the original design accommodates the narrower package, substitution is valid. If the PCB footprint is designed for the wider 0.295" package, this part will not fit without layout modification.

Q: What is the difference between the three substitute parts?

A: All three substitutes maintain identical electrical specifications. The differences are: SN74ALS573CDWR (active status, tape & reel, standard width), SN74ALS573CDW (last-time-buy status, tube packaging, standard width), and SN74ALS573CNSR (active status, tape & reel, narrow width). Selection depends on packaging requirements, product lifecycle needs, and PCB layout constraints.

Q: Is the DM74ALS573BWM still available?

A: The DM74ALS573BWM is classified as obsolete. Current inventory of 26,709 pieces is available, but long-term procurement should transition to active alternatives such as SN74ALS573CDWR or SN74ALS573CNSR.

Q: Are all substitutes RoHS compliant?

A: Yes. SN74ALS573CDWR, SN74ALS573CNSR, and SN74ALS573CDW are all ROHS3 compliant. The original DM74ALS573BWM RoHS status is not specified in available documentation.

Q: What are the key parameters that determine substitutability?

A: Logic type (D-Type Transparent Latch), circuit configuration (8:8), output type (tri-state), supply voltage (4.5V ~ 5.5V), propagation delay (2ns), output current (2.6mA / 24mA), operating temperature (0°C ~ 70°C), and mounting type (surface mount) must all match. Package dimensions must be verified for PCB compatibility.