SN7406DRE4 Equivalent & Substitute Parts

Part Overview

The SN7406DRE4 is a 6-channel inverter logic IC with open collector outputs in a 14-SOIC surface mount package, manufactured by Texas Instruments as part of the 7400 series. This part is currently discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design support and procurement.

The SN7406DRE4 functions as a logic inverter with open collector architecture, suitable for applications requiring active-low output control and external pull-up resistor configurations. Discontinuation status necessitates identification of functionally equivalent alternatives to maintain design continuity and component availability.

Key Parameters

Parameter	Value
Logic Type	Inverter
Number of Circuits	6
Number of Inputs	1
Features	Open Collector
Voltage - Supply	4.75V ~ 5.25V
Current - Output Low	40mA
Input Logic Level - Low	0.8V
Input Logic Level - High	2V
Max Propagation Delay	23ns @ 5V, 15pF
Operating Temperature	0°C ~ 70°C
Package / Case	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the SN7406DRE4 is determined by strict equivalence across the following critical parameters:

Logic Type: Inverter
Number of Circuits: 6
Number of Inputs: 1
Features: Open Collector output architecture
Voltage Supply Range: 4.75V ~ 5.25V
Output Current Capability: 40mA low
Input Logic Thresholds: 0.8V low, 2V high
Propagation Delay: 23ns @ 5V, 15pF
Operating Temperature Range: 0°C ~ 70°C
Package: 14-SOIC form factor
Mounting: Surface Mount

All identified substitute parts maintain identical electrical specifications and mechanical compatibility with the SN7406DRE4, ensuring direct functional replacement without circuit redesign.

Parameter Comparison

Parameter	SN7406DRE4	SN7406DR	SN7406DRG4	SN7416DR
Logic Type	Inverter	Inverter	Inverter	Inverter
Number of Circuits	6	6	6	6
Number of Inputs	1	1	1	1
Features	Open Collector	Open Collector	Open Collector	Open Collector
Voltage - Supply	4.75V ~ 5.25V	4.75V ~ 5.25V	4.75V ~ 5.25V	4.75V ~ 5.25V
Current - Output Low	40mA	40mA	40mA	40mA
Input Logic Level - Low	0.8V	0.8V	0.8V	0.8V
Input Logic Level - High	2V	2V	2V	2V
Max Propagation Delay	23ns @ 5V, 15pF	23ns @ 5V, 15pF	23ns @ 5V, 15pF	23ns @ 5V, 15pF
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C
Package / Case	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

SN7406DR is the primary substitute for the SN7406DRE4. This part maintains active product status at the manufacturer and offers the highest inventory availability (24,192 units). It is supplied in Tape & Reel packaging, suitable for high-volume production environments. All electrical and mechanical specifications are identical to the SN7406DRE4.

SN7406DRG4 provides an alternative with 2,081 units in stock. This part is discontinued at DiGi Electronics but remains available through inventory channels. Electrical and mechanical compatibility is complete with the SN7406DRE4.

SN7416DR is an active product offering 3,200 units in inventory. This part represents a long-term availability option with active manufacturer support. All parametric specifications match the SN7406DRE4 requirements. The SN7416 base product number indicates a variant within the 7400 series maintaining full electrical equivalence.

All three substitute parts carry ROHS3 compliance and unlimited moisture sensitivity rating, meeting the same environmental and regulatory requirements as the original SN7406DRE4.

Frequently Asked Questions (FAQ)

Q: Can SN7406DR be used as a direct replacement for SN7406DRE4?

A: Yes. The SN7406DR is electrically and mechanically identical to the SN7406DRE4. Both parts share the same logic type, circuit count, input/output specifications, voltage supply range, propagation delay, operating temperature range, and 14-SOIC package form factor. The primary difference is packaging format (Tape & Reel versus individual packaging) and product status (Active versus Discontinued).

Q: What is the difference between SN7406DR and SN7416DR?

A: Both parts are 6-channel inverters with open collector outputs in 14-SOIC packages with identical electrical specifications. The base product numbers (SN7406 versus SN7416) indicate different product lines within the 7400 series, but the parametric performance is equivalent for the specified operating conditions.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. The SN7406DRE4, SN7406DR, SN7406DRG4, and SN7416DR all carry ROHS3 compliance certification. All parts also maintain Moisture Sensitivity Level 1 (Unlimited), indicating no special moisture handling requirements during storage or assembly.

Q: Which substitute part offers the best long-term availability?

A: The SN7406DR is recommended for long-term designs. It maintains active product status at Texas Instruments with the highest inventory level (24,192 units). The SN7416DR also offers active status with 3,200 units available, providing a secondary long-term option.

Q: Can these parts be used interchangeably in existing PCB designs?

A: Yes. All substitute parts use the identical 14-SOIC surface mount package with matching pin assignments and electrical characteristics. No PCB layout modifications are required for substitution.

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