CD74HC393MT Equivalent & Substitute Parts

Part Overview

The CD74HC393MT is a binary counter IC manufactured by Texas Instruments, featuring two independent 4-bit counters with negative edge triggering. This component is classified as a logic IC and is currently discontinued at DiGi Electronics. The part operates across a wide supply voltage range of 2V to 6V and supports operating temperatures from -55°C to 125°C. Due to its discontinued status, equivalent substitute parts from active manufacturers are necessary for new designs and ongoing production requirements.

Substiute Parts

CD74HC393MT

Texas InstrumentsIn Stock: 1489CD74HC393MT Datasheet

Current PartRFQ

CD74HC393M96

Texas InstrumentsIn Stock: 2265CD74HC393M96 Datasheet

Parametric EquivalentRFQ

MC74HC393ADR2G

onsemiIn Stock: 4691MC74HC393ADR2G Datasheet

DirectRFQ

74HC393D,652

Nexperia USA Inc.In Stock: 78874HC393D,652 Datasheet

MFR RecommendedRFQ

74HC393D,653

Nexperia USA Inc.In Stock: 216674HC393D,653 Datasheet

MFR RecommendedRFQ

MC74HC393ADG

onsemiIn Stock: 1789MC74HC393ADG Datasheet

MFR RecommendedRFQ

NLV74HC393ADR2G

onsemiIn Stock: 3728NLV74HC393ADR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CD74HC393MT is determined by strict parametric matching across the following critical criteria:

Core Functional Parameters:

• Logic Type: Binary Counter
• Number of Elements: 2
• Number of Bits per Element: 4
• Trigger Type: Negative Edge
• Reset: Asynchronous
• Voltage - Supply: 2V ~ 6V
• Package / Case: 14-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount

Compliance Parameters:

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts must match all core functional parameters and maintain equivalent compliance certifications. Count rate and operating temperature ranges may vary within acceptable limits for the 74HC logic family. Packaging format (Tape & Reel, Cut Tape, or Tube) does not affect functional substitution but impacts procurement and handling.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: CD74HC393M96

CD74HC393M96 from Texas Instruments is the parametric equivalent with active product status. This part maintains identical functional specifications to the CD74HC393MT, including the same 35 MHz count rate and -55°C to 125°C operating temperature range. The primary difference is packaging format (Cut Tape & Digi-Reel versus Tape & Reel), which does not affect functional compatibility. This option provides continuity with the original manufacturer and ensures long-term availability.

Secondary Recommendation: MC74HC393ADR2G

MC74HC393ADR2G from onsemi is an active product with full parametric compatibility. This part exceeds the original count rate specification at 50 MHz while maintaining all other functional parameters. It is available in Tape & Reel packaging and carries ROHS3 compliance with MSL 1 rating. This option provides an alternative source from an established logic IC manufacturer.

Alternative Options: 74HC393D,653 and MC74HC393ADG

Both 74HC393D,653 (Nexperia) and MC74HC393ADG (onsemi) are active products with full functional equivalence. The Nexperia part offers enhanced count rate performance at 107 MHz. Both maintain ROHS3 compliance and MSL 1 ratings. These options are suitable for applications where higher performance margins are beneficial.

Obsolete Parts: 74HC393D,652 and NLV74HC393ADR2G

74HC393D,652 and NLV74HC393ADR2G are classified as obsolete. While parametrically equivalent, these parts present supply chain risk and should be avoided for new designs. The NLV74HC393ADR2G carries automotive qualification (AEC-Q100) and may be considered only for legacy automotive applications where this certification is required.

Frequently Asked Questions (FAQ)

Q: Can I use CD74HC393M96 as a direct replacement for CD74HC393MT?

A: Yes. CD74HC393M96 is a parametric equivalent with identical functional specifications. The only difference is packaging format (Cut Tape & Digi-Reel versus Tape & Reel), which does not affect circuit performance or pin compatibility.

Q: What is the difference between the substitute parts in terms of count rate?

A: The CD74HC393MT and CD74HC393M96 operate at 35 MHz. MC74HC393ADR2G and MC74HC393ADG operate at 50 MHz. The Nexperia parts (74HC393D,652 and 74HC393D,653) operate at 107 MHz. Higher count rates provide additional performance margin but do not affect compatibility in applications designed for the original 35 MHz specification.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level, matching the original CD74HC393MT specifications.

Q: Why should I avoid the obsolete parts?

A: Obsolete parts present supply chain risk due to limited inventory and no ongoing manufacturing. For new designs and production, active products (CD74HC393M96, MC74HC393ADR2G, 74HC393D,653, MC74HC393ADG) are recommended to ensure long-term availability and support.

Q: Does operating temperature range affect substitution?

A: The CD74HC393MT operates from -55°C to 125°C. The Nexperia parts (74HC393D,652 and 74HC393D,653) operate from -40°C to 125°C. For applications requiring the full -55°C lower limit, select parts with -55°C minimum rating. For standard industrial applications, the -40°C minimum is acceptable.

Q: Can I use MC74HC393ADR2G in automotive applications?

A: MC74HC393ADR2G is not automotive qualified. For automotive applications requiring AEC-Q100 qualification, NLV74HC393ADR2G is available, though it is classified as obsolete. Consult with the manufacturer for current automotive-grade alternatives.

Q: What is the significance of packaging format differences?

A: Packaging format (Tape & Reel, Cut Tape, or Tube) affects procurement, handling, and automated assembly processes but does not affect electrical or mechanical compatibility. Select based on your production equipment and volume requirements.