DM7406M Equivalent & Substitute Parts

Part Overview

The DM7406M is a 6-channel inverter logic IC manufactured by onsemi in 14-SOIC surface mount packaging. This part operates as an open collector inverter with supply voltage range of 4.75V to 5.25V and maximum output current of 40mA. The DM7406M is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement.

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 High, Low	-, 40mA
Input Logic Level - Low	0.8V
Input Logic Level - High	2V
Max Propagation Delay @ V, Max CL	23ns @ 5V, 15pF
Operating Temperature	0°C ~ 70°C
Mounting Type	Surface Mount
Package / Case	14-SOIC (0.154", 3.90mm Width)
Series	7400

Substitute Part Grouping Explanation

Substitution of the DM7406M is determined by strict equivalence across the following parameters: logic type (inverter), number of circuits (6), number of inputs (1), open collector feature, supply voltage range (4.75V ~ 5.25V), output current specification (40mA), input logic levels (0.8V low, 2V high), propagation delay (23ns @ 5V, 15pF), operating temperature range (0°C ~ 70°C), and surface mount packaging in 14-SOIC form factor.

Substitute parts are grouped into the following categories:

Direct Manufacturer Equivalents (Texas Instruments SN7406 Series): Parts SN7406D, SN7406DR, and SN7406DRG4 are direct functional equivalents manufactured by Texas Instruments. These parts maintain identical electrical specifications and 14-SOIC packaging.

Package Variant (14-SO): Part SN7406NSR is functionally equivalent but uses 14-SO packaging (0.209", 5.30mm width) instead of 14-SOIC (0.154", 3.90mm width). This represents a mechanical variation only.

Related Series Part (SN7416): Part SN7416D shares the same logic configuration, circuit count, and electrical parameters as the DM7406M but represents a different base product number within the 7400 series.

Parameter Comparison

Part Number	Manufacturer	Logic Type	Circuits	Inputs	Features	Supply Voltage	Output Current	Propagation Delay	Operating Temp	Package	Product Status
DM7406M	onsemi	Inverter	6	1	Open Collector	4.75V ~ 5.25V	40mA	23ns @ 5V, 15pF	0°C ~ 70°C	14-SOIC (0.154")	Obsolete
SN7406D	Texas Instruments	Inverter	6	1	Open Collector	4.75V ~ 5.25V	40mA	23ns @ 5V, 15pF	0°C ~ 70°C	14-SOIC (0.154")	Last Time Buy
SN7406DR	Texas Instruments	Inverter	6	1	Open Collector	4.75V ~ 5.25V	40mA	23ns @ 5V, 15pF	0°C ~ 70°C	14-SOIC (0.154")	Active
SN7406DRG4	Texas Instruments	Inverter	6	1	Open Collector	4.75V ~ 5.25V	40mA	23ns @ 5V, 15pF	0°C ~ 70°C	14-SOIC (0.154")	Discontinued at DiGi Electronics
SN7406DG4	Texas Instruments	Inverter	6	1	Open Collector	4.75V ~ 5.25V	40mA	23ns @ 5V, 15pF	0°C ~ 70°C	14-SOIC (0.154")	Last Time Buy
SN7416D	Texas Instruments	Inverter	6	1	Open Collector	4.75V ~ 5.25V	40mA	23ns @ 5V, 15pF	0°C ~ 70°C	14-SOIC (0.154")	Last Time Buy
SN7406NSR	Texas Instruments	Inverter	6	1	Open Collector	4.75V ~ 5.25V	40mA	23ns @ 5V, 15pF	0°C ~ 70°C	14-SO (0.209")	Active

Engineering Selection Recommendations

Primary Recommendation: SN7406DR (Texas Instruments) is the preferred substitute. This part maintains active product status, ROHS3 compliance, and identical electrical and mechanical specifications to the DM7406M. Availability is highest among alternatives at 24,192 pieces in stock.

Secondary Recommendation: SN7406D (Texas Instruments) provides direct functional equivalence with ROHS3 compliance. Product status is Last Time Buy with 2,308 pieces available. This part is suitable for applications where active product status is not critical.

Package Variant Option: SN7406NSR (Texas Instruments) is active and ROHS3 compliant but uses 14-SO packaging (0.209" width) instead of 14-SOIC (0.154" width). PCB layout modification is required for this substitution.

Discontinued Options: SN7406DRG4 and SN7406DG4 are discontinued or last-time-buy status. SN7416D is functionally equivalent but represents a different base product number.

All substitute parts maintain RoHS3 compliance and REACH unaffected status. The DM7406M is RoHS non-compliant, making Texas Instruments alternatives preferable for new designs requiring regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can SN7406DR directly replace DM7406M without PCB modification? A: Yes. SN7406DR is electrically and mechanically identical to DM7406M. Both use 14-SOIC packaging with 0.154" width and identical pin configuration. No PCB layout changes are required.

Q: What is the difference between SN7406D and SN7406DR? A: Both parts are electrically identical. SN7406D is supplied in tube packaging, while SN7406DR is supplied in cut tape and Digi-Reel format. Selection depends on procurement and assembly requirements.

Q: Why is SN7406NSR listed as a substitute if the package is different? A: SN7406NSR uses 14-SO packaging (0.209" width) versus 14-SOIC (0.154" width). While electrically equivalent, this part requires PCB footprint modification and is suitable only when package size constraints are not critical.

Q: What is the difference between SN7406 and SN7416 series parts? A: Both are 6-channel inverters with identical electrical specifications. SN7416 represents a different base product number within the 7400 logic series. Electrical performance is equivalent for the specified parameters.

Q: Are all substitute parts RoHS compliant? A: All Texas Instruments substitutes (SN7406D, SN7406DR, SN7406DRG4, SN7406DG4, SN7416D, SN7406NSR) are ROHS3 compliant. The original DM7406M is RoHS non-compliant.

Q: Which substitute has the best availability? A: SN7406DR has the highest inventory at 24,192 pieces in stock and maintains active product status.

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