Part A
AD8561AR
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 4375 PCS
- Package
- SOIC-8
- Series
- Comparateur linéaire
Replacement verdict
Compatible functional replacement candidate
The AD8561AR and AD8561AR-REEL7 are the same AD8561 comparator die in the same 8-lead SOIC package, differing only in packaging format (tube vs. tape-and-reel). They are functionally identical and fully interchangeable in design, with the REEL7 variant suited to automated high-volume assembly lines.
Package Type
High match
Pin Configuration
High match
Electrical Specifications
High match
Packaging Format
High match
Parts at a glance
Part B
AD8561AR-REEL7
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 7283 PCS
- Package
- SOIC-8
- Series
- Comparateur linéaire
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD8561AR | AD8561AR-REEL7 | Why it matters |
|---|---|---|---|
| Manufacturer | Analog Devices Inc. | Analog Devices Inc. | Same manufacturer ensures identical design, process, and quality standards. |
| Part Status | Active | Active | Both are currently available for new designs and production. |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) | Identical footprint allows drop-in PCB replacement without layout changes. |
| Number of Circuits | 1 | 1 | Single comparator per package; functional channel count must match for substitutability. |
| Output Type | CMOS, TTL | CMOS, TTL | Compatible logic-level output ensures interoperability with downstream digital circuitry. |
| Supply Voltage Range | 2.5V to 5.5V | 2.5V to 5.5V | Matching supply range guarantees operation in the same system power domain. |
| Propagation Delay | 7ns | 7ns | Identical timing behavior preserves circuit response and signal integrity. |
| Operating Temperature | -40°C to 85°C | -40°C to 85°C | Same temperature rating ensures equivalent environmental robustness. |
| Packaging | Tube | Tape & Reel (7" reel) | Packaging differs for automated assembly; the reel variant suits high-volume pick-and-place production while the tube suits prototyping or low-volume runs. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD8561AR | AD8561AR-REEL7 |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Obsolete | Obsolete |
| Type | General Purpose | General Purpose |
| Number of Elements | 1 | 1 |
| Output Type | CMOS, Complementary, TTL | CMOS, Complementary, TTL |
| Voltage - Supply, Single/Dual (±) | 3V ~ 10V, ±1.5V ~ 5V | 3V ~ 10V, ±1.5V ~ 5V |
| Voltage - Input Offset (Max) | 7mV @ 5V | 7mV @ 5V |
| Current - Input Bias(Max) | 6µA @ 5V | 6µA @ 5V |
| Current - Quiescent (Max) | 6mA, 3.3mA, 5.5mA | 6mA, 3.3mA, 5.5mA |
| CMRRPSRR(Typ) | 85dB CMRR, 65dB PSRR | 85dB CMRR, 65dB PSRR |
| Propagation Delay(Max) | 9.8ns | 9.8ns |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What is the difference between AD8561AR and AD8561AR-REEL7?
The AD8561AR and AD8561AR-REEL7 are the same comparator die and package (8-lead SOIC); the difference is packaging format. AD8561AR is supplied in tube/rail form, while AD8561AR-REEL7 is supplied on a 7-inch tape-and-reel for automated assembly. Electrical and functional specifications are identical.
Are AD8561AR and AD8561AR-REEL7 electrically and functionally identical?
Yes. Both are the same AD8561 single high-speed comparator in an 8-lead SOIC package, with identical pinout, supply range, input characteristics, output configuration, and temperature grade. The suffix difference denotes shipping media only.
Can AD8561AR and AD8561AR-REEL7 be used interchangeably in a design?
Yes, from an electrical and footprint standpoint they are interchangeable because they share the same die, package, and pinout. The only practical consideration is assembly: AD8561AR-REEL7 is intended for pick-and-place reel-fed production, while AD8561AR is supplied in rails/tubes.
What package and pinout do AD8561AR and AD8561AR-REEL7 use?
Both devices are offered in an 8-lead SOIC (R-8) package with the standard AD8561 pinout. Designers should confirm the exact package drawing and pin assignment against the official Analog Devices AD8561 datasheet before layout.
Which should be selected for high-volume automated PCB assembly?
AD8561AR-REEL7 is the appropriate choice for high-volume automated assembly because it is supplied on 7-inch tape-and-reel compatible with standard SMT pick-and-place equipment. AD8561AR in rails/tubes is better suited to low-volume or hand-assembly workflows.
Do AD8561AR and AD8561AR-REEL7 differ in temperature grade or performance specifications?
No. Because they are the same AD8561 device in the same SOIC package, they share the same specified performance and temperature grade. The -REEL7 suffix indicates tape-and-reel packaging and does not denote a different speed, supply, or temperature rating.
What is the function of the AD8561 comparator used in both parts?
The AD8561 is a single high-speed voltage comparator. Both AD8561AR and AD8561AR-REEL7 provide the same comparator function and should be evaluated using the official Analog Devices AD8561 datasheet for supply voltage range, input common-mode range, output logic compatibility, and propagation delay.