Request Quote
(Ships tomorrow)
DG445DY Equivalent & Substitute Parts
Part Overview
The DG445DY is a 4-circuit SPST-NO IC switch manufactured by Vishay Siliconix, designed for interface applications requiring low on-state resistance and fast switching performance. This part operates across a wide supply voltage range (5V to 36V single supply, ±5V to ±20V dual supply) with 85Ohm maximum on-state resistance and switching times of 250ns (Ton) and 210ns (Toff).
The DG445DY is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for new production runs and system upgrades.
Substiute Parts
Key Parameters
| Parameter | DG445DY |
|---|---|
| Switch Circuit | SPST - NO |
| Number of Circuits | 4 |
| Multiplexer/Demultiplexer Circuit | 1:1 |
| On-State Resistance (Max) | 85Ohm |
| Voltage - Supply, Single (V+) | 5V ~ 36V |
| Voltage - Supply, Dual (V±) | ±5V ~ 20V |
| Switch Time Ton (Max) | 250ns |
| Switch Time Toff (Max) | 210ns |
| Charge Injection | -1pC |
| Channel Capacitance CS(off) | 4pF |
| Channel Capacitance CD(off) | 4pF |
| Current - Leakage IS(off) (Max) | 500pA |
| Crosstalk | -100dB @ 1MHz |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Package / Case | 16-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
| RoHS Status | RoHS non-compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute parts for the DG445DY are classified into two functional groups based on electrical parameter compatibility:
Group 1: Direct Electrical Equivalents (85Ohm On-State Resistance) These parts maintain the same on-state resistance specification (85Ohm maximum) and are functionally interchangeable with the DG445DY in applications where this resistance value is required. Parts in this group include DG445DY-E3, DG445DY+, DG445DYZ, and DG445DYZ-T. These parts share identical switch circuit topology (SPST-NO, 4 circuits, 1:1 multiplexer configuration), package form factor (16-SOIC), and core electrical characteristics including charge injection, channel capacitance, leakage current, and crosstalk performance.
Group 2: Enhanced Performance Alternative (4Ohm On-State Resistance) The MAX4605CSE+ and MAX4605CSE+T represent an alternative with significantly lower on-state resistance (4Ohm maximum). These parts are suitable for applications where reduced on-state resistance provides system benefits, such as lower power dissipation or improved signal integrity. However, these parts exhibit different electrical characteristics including higher charge injection (225pC vs. -1pC), increased channel capacitance (34pF vs. 4pF), reduced crosstalk performance (-60dB vs. -100dB @ 1MHz), and a narrower operating temperature range (0°C to 70°C vs. -40°C to 85°C).
Key Parameters Determining Substitution:
- On-state resistance (85Ohm vs. 4Ohm)
- Switch circuit topology (SPST-NO, 4 circuits, 1:1)
- Package form factor (16-SOIC)
- Supply voltage ranges
- Operating temperature range
- Charge injection and channel capacitance characteristics
Parameter Comparison
| Parameter | DG445DY | DG445DY-E3 | DG445DY+ | DG445DY+T | DG445DYZ | DG445DYZ-T | MAX4605CSE+ | MAX4605CSE+T |
|---|---|---|---|---|---|---|---|---|
| Manufacturer | Vishay Siliconix | Vishay Siliconix | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated | Renesas Electronics Corporation | Renesas Electronics Corporation | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated |
| Product Status | Obsolete | Active | Active | Active | Active | Active | Active | Active |
| Switch Circuit | SPST - NO | SPST - NO | SPST - NO | SPST - NO | SPST - NO | SPST - NO | SPST - NO | SPST - NO |
| Number of Circuits | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| On-State Resistance (Max) | 85Ohm | 85Ohm | 85Ohm | 85Ohm | 85Ohm | 85Ohm | 4Ohm | 4Ohm |
| Voltage - Supply, Single (V+) | 5V ~ 36V | 5V ~ 36V | 10V ~ 30V | 10V ~ 30V | 5V ~ 34V | 5V ~ 34V | 4.5V ~ 36V | 4.5V ~ 36V |
| Voltage - Supply, Dual (V±) | ±5V ~ 20V | ±5V ~ 20V | ±4.5V ~ 20V | ±4.5V ~ 20V | ±5V ~ 22V | ±5V ~ 22V | ±4.5V ~ 20V | ±4.5V ~ 20V |
| Switch Time Ton (Max) | 250ns | 250ns | 250ns | 250ns | 250ns | 250ns | 120ns | 120ns |
| Switch Time Toff (Max) | 210ns | 210ns | 170ns | 170ns | 210ns | 210ns | 130ns | 130ns |
| Charge Injection | -1pC | -1pC | 5pC | 5pC | -1pC | -1pC | 225pC | 225pC |
| Channel Capacitance CS(off) | 4pF | 4pF | 4pF | 4pF | 4pF | 4pF | 34pF | 34pF |
| Channel Capacitance CD(off) | 4pF | 4pF | 4pF | 4pF | 4pF | 4pF | 34pF | 34pF |
| Current - Leakage IS(off) (Max) | 500pA | 500pA | 500pA | 500pA | 500pA | 500pA | 500pA | 500pA |
| Crosstalk | -100dB @ 1MHz | -100dB @ 1MHz | -100dB @ 1MHz | -100dB @ 1MHz | -100dB @ 1MHz | -100dB @ 1MHz | -60dB @ 1MHz | -60dB @ 1MHz |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | 0°C ~ 70°C | 0°C ~ 70°C |
| Package / Case | 16-SOIC | 16-SOIC | 16-SOIC | 16-SOIC | 16-SOIC | 16-SOIC | 16-SOIC | 16-SOIC |
| Packaging Type | Bulk | Tube | Tube | Tape & Reel (TR) | Bulk | Tape & Reel (TR) | Tube | Tape & Reel (TR) |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 3 (168 Hours) | 3 (168 Hours) | 1 (Unlimited) | 1 (Unlimited) |
Engineering Selection Recommendations
For Direct Replacement (85Ohm On-State Resistance):
DG445DY-E3 is the primary direct replacement. It maintains all electrical specifications of the original DG445DY while offering active product status and ROHS3 compliance. This part is available in tube packaging with 1,445 units in stock.
DG445DY+ and DG445DY+T (Analog Devices Inc./Maxim Integrated) are active alternatives with identical on-state resistance. These parts feature improved Toff performance (170ns vs. 210ns) and are available in both tube and tape & reel packaging. However, the single supply voltage range is narrower (10V to 30V vs. 5V to 36V), which may limit application scope in systems requiring the full 5V to 36V range.
DG445DYZ and DG445DYZ-T (Renesas Electronics Corporation) maintain the original electrical specifications including the full 5V to 36V single supply range and -40°C to 85°C operating temperature. These parts are active and ROHS3 compliant. DG445DYZ-T offers tape & reel packaging with 1,739 units in stock. Note that MSL rating is 3 (168 Hours) for these parts, compared to MSL 1 for other alternatives.
For Enhanced Performance Applications (4Ohm On-State Resistance):
MAX4605CSE+ and MAX4605CSE+T are suitable only for applications where the significantly lower on-state resistance (4Ohm) provides measurable system benefits. These parts exhibit substantially different electrical characteristics: higher charge injection (225pC), increased channel capacitance (34pF), and reduced crosstalk performance (-60dB @ 1MHz). The operating temperature range is also narrower (0°C to 70°C), restricting use in extended temperature applications. These parts are not direct replacements and require circuit re-evaluation.
Compliance Considerations:
All substitute parts except the original DG445DY are ROHS3 compliant. For applications requiring RoHS compliance, any of the active substitute parts are suitable. The original DG445DY is RoHS non-compliant and should be replaced in new designs targeting RoHS-compliant systems.
Frequently Asked Questions (FAQ)
Q: Can DG445DY-E3 be used as a direct replacement for DG445DY?
A: Yes. DG445DY-E3 maintains identical electrical specifications including 85Ohm on-state resistance, 4-circuit SPST-NO topology, supply voltage ranges (5V to 36V single, ±5V to ±20V dual), switching times, charge injection, channel capacitance, leakage current, and crosstalk performance. The primary differences are product status (active vs. obsolete) and RoHS compliance (ROHS3 vs. non-compliant). Packaging is tube format instead of bulk.
Q: What are the key differences between DG445DY+ and DG445DYZ?
A: Both maintain 85Ohm on-state resistance and 4-circuit SPST-NO topology. DG445DY+ (Analog Devices Inc./Maxim Integrated) has a narrower single supply voltage range (10V to 30V vs. 5V to 34V) and improved Toff performance (170ns vs. 210ns). DG445DYZ (Renesas Electronics Corporation) maintains the original 5V to 34V single supply range and original switching times. DG445DYZ has MSL rating of 3 (168 Hours) compared to MSL 1 for DG445DY+.
Q: Are MAX4605CSE+ and MAX4605CSE+T direct replacements?
A: No. While these parts share the same 16-SOIC package and 4-circuit SPST-NO topology, they feature 4Ohm on-state resistance instead of 85Ohm. This fundamental difference results in substantially different electrical characteristics: charge injection increases from -1pC to 225pC, channel capacitance increases from 4pF to 34pF, and crosstalk performance degrades from -100dB to -60dB @ 1MHz. Operating temperature range is also narrower (0°C to 70°C vs. -40°C to 85°C). These parts are suitable only for applications where lower on-state resistance is required and the altered electrical characteristics are acceptable.
Q: What packaging options are available for substitute parts?
A: DG445DY-E3 is available in tube packaging. DG445DY+ is available in tube packaging. DG445DY+T is available in tape & reel (TR) packaging. DG445DYZ is available in bulk packaging. DG445DYZ-T is available in tape & reel (TR) packaging. MAX4605CSE+ is available in tube packaging. MAX4605CSE+T is available in tape & reel (TR) packaging. Select packaging based on production volume and assembly process requirements.
Q: Which substitute part has the best availability?
A: DG445DY-E3 has 1,445 units in stock. DG445DY+ has 4,345 units in stock (highest inventory). DG445DY+T has 1,210 units in stock. DG445DYZ has 1,114 units in stock. DG445DYZ-T has 1,739 units in stock. MAX4605CSE+ has 1,168 units in stock. MAX4605CSE+T has 921 units in stock.
Q: Can I use DG445DY+ in applications requiring the full 5V to 36V supply range?
A: No. DG445DY+ single supply voltage range is 10V to 30V, which does not cover the full 5V to 36V range of the original DG445DY. For applications requiring operation at 5V or above 30V, use DG445DY-E3, DG445DYZ, or DG445DYZ-T instead.
Q: What is the significance of MSL rating differences?
A: DG445DY-E3, DG445DY+, DG445DY+T, MAX4605CSE+, and MAX4605CSE+T have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. DG445DYZ and DG445DYZ-T have MSL 3 (168 Hours), requiring moisture control during storage and handling. For applications with extended storage periods or high-humidity environments, MSL 1 rated parts are preferred.
Alternative Parts
SJ6012L2TP
Littelfuse Inc.
6 Alternative Parts
JMK107BBJ476MA-RE
Taiyo Yuden
10 Alternative Parts
GMK107BBJ475MA-T
Taiyo Yuden
5 Alternative Parts
SJ6020N2ARP
Littelfuse Inc.
3 Alternative Parts
SJ6025R2ATP
Littelfuse Inc.
4 Alternative Parts
2474-05L
API Delevan Inc.
1 Alternative Parts
4590R-684K
API Delevan Inc.
1 Alternative Parts
CM6560R-334
API Delevan Inc.
1 Alternative Parts
CM6460-104
API Delevan Inc.
1 Alternative Parts
5526-12
API Delevan Inc.
1 Alternative Parts