N74F06D,623 Equivalent & Substitute Parts

Part Overview

The N74F06D,623 is a 6-channel inverter IC with open collector output configuration, manufactured by NXP Semiconductors in 14-SO surface mount packaging. This component operates within the 74F logic family and is classified as obsolete. Due to its obsolete status and limited availability relative to active alternatives, identifying functionally equivalent substitute parts is essential for ongoing system support and new design implementations.

Substiute Parts

N74F06D,623

NXP SemiconductorsIn Stock: 877N74F06D,623 Datasheet

Current PartRFQ

SN74ALS1005DR

Texas InstrumentsIn Stock: 2194SN74ALS1005DR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the N74F06D,623 is determined by the following critical parameters:

• Logic Function: 6-channel inverter with single input per channel
• Output Configuration: Open collector topology
• Supply Voltage Range: 4.5V to 5.5V compatibility
• Input Threshold Levels: Low 0.8V, High 2V
• Package Compatibility: 14-SOIC form factor with identical pin pitch (0.154", 3.90mm width)
• Mounting Standard: Surface mount technology
• Environmental Compliance: ROHS3 and REACH compliance

The SN74ALS1005DR from Texas Instruments satisfies all substitution criteria. Both parts maintain identical logic function, input thresholds, supply voltage range, package geometry, and compliance certifications. The substitute operates within the same thermal range (0°C ~ 70°C) and maintains open collector output architecture.

Parameter Comparison

Engineering Selection Recommendations

The SN74ALS1005DR is the qualified substitute for the N74F06D,623 based on the following engineering criteria:

Functional Equivalence: Both parts implement identical 6-channel inverter logic with open collector outputs, single input per channel, and matching input threshold specifications.

Package Compatibility: Identical 14-SOIC package geometry ensures direct pin-for-pin replacement without PCB redesign.

Compliance Alignment: Both parts maintain ROHS3 and REACH compliance, supporting equivalent environmental and regulatory requirements.

Supply Voltage Compatibility: Identical 4.5V to 5.5V operating range ensures seamless integration into existing power distribution architectures.

Availability Advantage: The SN74ALS1005DR maintains active product status with 2100 units in stock, compared to the obsolete N74F06D,623 with limited inventory of 847 units.

Performance Consideration: The N74F06D,623 exhibits faster propagation delay (6ns versus 30ns at 5V, 50pF load). Applications requiring sub-10ns timing margins must evaluate whether the 24ns delay increase of the substitute impacts system performance.

Frequently Asked Questions (FAQ)

Q: Can the SN74ALS1005DR directly replace the N74F06D,623 without PCB modifications?

A: Yes. Both parts use identical 14-SOIC packaging with matching pin pitch (0.154", 3.90mm width) and pin assignments. Direct socket substitution is possible without PCB redesign.

Q: What is the significance of the propagation delay difference (6ns vs. 30ns)?

A: The N74F06D,623 operates at 6ns propagation delay while the SN74ALS1005DR operates at 30ns. This 24ns difference is relevant only for high-speed timing-critical applications. Standard logic applications operating below 10MHz are unaffected by this specification variance.

Q: Are the output current ratings compatible?

A: The N74F06D,623 specifies 64mA output low current, while the SN74ALS1005DR specifies 24mA. Applications requiring output currents exceeding 24mA must retain the original part or evaluate alternative solutions. Standard TTL-level loads (typically 16mA per output) are supported by both parts.

Q: Do both parts meet the same environmental compliance standards?

A: Yes. Both the N74F06D,623 and SN74ALS1005DR are ROHS3 compliant and REACH unaffected, supporting identical environmental and regulatory requirements.

Q: Why is the N74F06D,623 classified as obsolete?

A: The N74F06D,623 belongs to the 74F logic family, which has been superseded by more modern logic families including 74ALS and 74HC variants. The SN74ALS1005DR represents the active equivalent within the 74ALS family, which maintains backward compatibility while offering improved availability and manufacturing support.