Part A
ADG453BR
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5833 Stückzahl
- Package
- SOIC-16
- Series
- Schnittstelle für analoge Schalter, Multiplexer, Demultiplexer
Replacement verdict
Compatible functional replacement candidate
The ADG453BR and ADG451BR-REEL7 are functionally comparable quad SPST CMOS analog switches sharing the same pinout, package, and supply architecture, making the ADG453BR a viable replacement candidate for the ADG451BR-REEL7 in most designs. The primary distinction is on-resistance, where the ADG453BR offers a lower typical value, which generally benefits signal integrity but should be validated against the specific circuit's loading and accuracy requirements before substitution.
Switch Configuration
High match
Package Type
High match
On-Resistance
Validation required
Supply Voltage Range
High match
Parts at a glance
Part B
ADG451BR-REEL7
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 4830 Stückzahl
- Package
- SOIC-16
- Series
- Schnittstelle für analoge Schalter, Multiplexer, Demultiplexer
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ADG453BR | ADG451BR-REEL7 | Why it matters |
|---|---|---|---|
| Switch Configuration | 4 x SPST (Normally Open) | 4 x SPST (Normally Closed) | Determines the default conduction state of each switch when the control logic is unpowered or in its inactive state, which is critical for fail-safe and power-up behavior. |
| Number of Switches | 4 | 4 | Defines how many independent signal paths can be routed, affecting channel count and PCB layout. |
| On-Resistance (RON) | 4 Ω (typ) | 4 Ω (typ) | Lower on-resistance reduces signal attenuation and voltage drop across the switch, important for precision analog signal routing. |
| Supply Voltage Range | ±4.5 V to ±20 V dual, or 4.5 V to 40 V single | ±4.5 V to ±20 V dual, or 4.5 V to 40 V single | Determines compatibility with the system power rails and the allowable analog signal swing. |
| Control Logic Interface | TTL/CMOS compatible | TTL/CMOS compatible | Ensures the switch can be driven directly by standard digital logic levels without level shifting. |
| Package | 16-Lead SOIC | 16-Lead SOIC | Footprint and thermal characteristics must match for drop-in board compatibility. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Confirms the part is rated for the target application environment. |
| Switch Action (Logic) | Logic 1 = ON (Normally Open) | Logic 1 = OFF (Normally Closed) | Inverts the control polarity, so firmware or drive circuitry must be adjusted; a direct substitution changes system behavior. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADG453BR | ADG451BR-REEL7 |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| Part Status | Obsolete | Obsolete |
| Switch Circuit | SPST - NO/NC | SPST - NC |
| Multiplexer / Demultiplexer Circuit | 1:1 | 1:1 |
| Number of Circuits | 4 | 4 |
| On - State Resistance(Max) | 5Ohm | 5Ohm |
| Channel - to - Channel Matching(ΔRon) | 100mOhm | 100mOhm |
| Voltage - Supply, Single (V+) | 12V | 12V |
| Voltage - Supply, Dual (V±) | ±4.5V ~ 20V | ±4.5V ~ 20V |
| Switch Time(Ton Toff)(Max) | 180ns, 140ns | 180ns, 140ns |
| Charge Injection | 20pC | 20pC |
| Channel Capacitance(CS(off)CD(off)) | 37pF, 37pF | 37pF, 37pF |
| Current - Leakage(IS(off))(Max) | 500pA | 500pA |
| Crosstalk | -90dB @ 1MHz | -90dB @ 1MHz |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the key differences between the ADG453BR and ADG451BR-REEL7?
Both are quad SPST analog switches from Analog Devices. The ADG453BR features normally open (NO) switch configuration, while the ADG451BR-REEL7 features normally closed (NC) configuration. The ADG451BR-REEL7 is supplied in tape-and-reel packaging for automated assembly, whereas the ADG453BR is supplied in tube packaging. Both share the same 16-lead SOIC package and similar electrical performance characteristics.
Are the ADG453BR and ADG451BR-REEL7 pin-compatible?
Yes. Both devices are offered in the same 16-lead SOIC package with identical pin assignments. The difference lies in the switch logic state: the ADG453BR is normally open and the ADG451BR-REEL7 is normally closed. Pin-to-pin compatibility allows a common PCB footprint, but the switch state under power-off or logic-low conditions differs.
What is the on-resistance of these switches?
Both the ADG453BR and ADG451BR-REEL7 specify a typical on-resistance of approximately 4 Ω (with a maximum around 8 Ω) at ±15 V dual supplies, per Analog Devices datasheet parameters. On-resistance flatness is specified to ensure consistent signal transmission across the analog input range.
What supply voltage ranges do the ADG453BR and ADG451BR-REEL7 support?
Both devices operate from dual supplies of ±4.5 V to ±20 V, or a single supply of 9 V to 40 V, as specified in the Analog Devices datasheet. This flexibility supports use in both bipolar analog signal chains and single-supply systems.
What are the switching times of these devices?
Per the Analog Devices datasheet, both the ADG453BR and ADG451BR-REEL7 feature typical turn-on time (tON) of approximately 90 ns and turn-off time (tOFF) of approximately 70 ns at ±15 V supplies. These fast switching times suit applications requiring rapid signal routing.
Can the ADG453BR be used as a direct replacement for the ADG451BR-REEL7?
Not directly without design review. Although pin-compatible, the ADG453BR is normally open while the ADG451BR-REEL7 is normally closed. The default switch state during power-up, power-down, or logic-low conditions differs, which can affect system behavior. The designer must verify that the required default state matches the application.
What are the typical applications for these quad SPST switches?
Both devices are used in signal routing, data acquisition systems, communication systems, audio and video switching, and relay replacement. Their low on-resistance and fast switching make them suitable for precision analog signal path control in instrumentation and industrial equipment.
What packaging options are available for these parts?
The ADG453BR is available in a 16-lead SOIC package in tube form. The ADG451BR-REEL7 is the same 16-lead SOIC device supplied in tape-and-reel packaging (7-inch reel) for high-volume automated placement. Both share the same package outline and thermal characteristics.