74ACT16373MTDX Equivalent & Substitute Parts

Part Overview

The 74ACT16373MTDX is a D-Type Transparent Latch IC with 2 independent channels, 8:8 circuit configuration, and tri-state output capability. Manufactured by onsemi in a 48-TSSOP package, this component is classified as obsolete. Due to its obsolete status and limited availability relative to active alternatives, identifying equivalent substitute parts is essential for design continuity and procurement planning.

Substiute Parts

74ACT16373MTDX

onsemiIn Stock: 88874ACT16373MTDX Datasheet

Current PartRFQ

74ACT16373DL

Texas InstrumentsIn Stock: 294074ACT16373DL Datasheet

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74ACT16373DLR

Texas InstrumentsIn Stock: 171474ACT16373DLR Datasheet

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SN74ACT16373QDLREP

Texas InstrumentsIn Stock: 712SN74ACT16373QDLREP Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74ACT16373MTDX is determined by the following critical parameters:

• Logic Type: D-Type Transparent Latch (must match exactly)
• Circuit Configuration: 8:8 (must match exactly)
• Output Type: Tri-State (must match exactly)
• Independent Circuits: 2 (must match exactly)
• Supply Voltage Range: 4.5V ~ 5.5V (must match exactly)
• Output Current Capability: Minimum 24mA / 24mA (equal or greater acceptable)
• Operating Temperature Range: Minimum -40°C ~ 85°C (extended range acceptable)
• Mounting Type: Surface Mount (must match exactly)
• Moisture Sensitivity Level: 1 (Unlimited) (must match exactly)

All identified substitute parts meet these core electrical and mechanical requirements. Differences in propagation delay time and package case dimensions are secondary considerations that do not affect functional substitution within the specified parameter envelope.

Parameter Comparison

Engineering Selection Recommendations

74ACT16373DLR (Texas Instruments) is the primary recommended substitute. This part is currently active in production, ROHS3 compliant, available in cut tape and digi-reel packaging formats, and meets all core electrical and mechanical requirements. The 48-BSSOP package is functionally compatible with the original 48-TFSOP, though PCB layout adjustments may be required due to package width differences (7.50mm vs. 6.10mm).

SN74ACT16373QDLREP (Texas Instruments) is an alternative substitute with extended operating temperature range (-40°C ~ 125°C). This part is active in production and ROHS3 compliant. Note that output current capability is reduced to 16mA / 16mA compared to the original 24mA / 24mA specification. This part is suitable only for applications where the reduced output current does not impact system performance.

74ACT16373DL (Texas Instruments) is available as a last-time-buy option. This part meets all core requirements but has limited procurement window due to its end-of-life status.

Frequently Asked Questions (FAQ)

Q: Can the 74ACT16373DLR directly replace the 74ACT16373MTDX without circuit modifications?

A: Electrical substitution is direct. The core logic function, tri-state output behavior, and electrical specifications are identical. However, the package case differs (48-BSSOP vs. 48-TFSOP), requiring PCB layout verification and potential footprint adjustment due to the 1.40mm increase in package width.

Q: What is the significance of the propagation delay difference (5.3ns vs. 9.3ns)?

A: The original part exhibits faster propagation delay. In timing-critical applications, the slower delay of substitute parts must be evaluated against system timing margins. For most general-purpose latch applications, the 9.3ns delay is functionally acceptable.

Q: Why is the SN74ACT16373QDLREP output current rated at 16mA instead of 24mA?

A: This is a device-specific characteristic. Applications requiring the full 24mA output current must use 74ACT16373DLR or 74ACT16373DL. For applications with lower output current requirements, the SN74ACT16373QDLREP is suitable.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All Texas Instruments substitute parts are ROHS3 compliant. The original onsemi part is REACH unaffected, which is compatible with ROHS3 requirements.

Q: What packaging options are available for the substitute parts?

A: 74ACT16373DL is supplied in tube packaging. 74ACT16373DLR is available in cut tape and digi-reel formats. SN74ACT16373QDLREP is supplied in tape and reel format. Select based on procurement and assembly requirements.

Q: Is the extended temperature range of SN74ACT16373QDLREP (-40°C ~ 125°C) a benefit or a limitation?

A: Extended temperature range is a capability enhancement, not a limitation. It allows operation in higher-temperature environments. However, it does not compensate for the reduced output current specification.