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Product Detailed Parameters
- Description：IC COMPARATOR 4 GEN PUR 14SOIC
- Series：-
- Mfr：Analog Devices Inc./Maxim Integrated
- Package：Tape & Reel (TR)
- Type：General Purpose
- Number of Elements：4
- Output Type：TTL
- Voltage - Supply, Single/Dual (±)：4.5V ~ 11V
- Voltage - Input Offset (Max)：2mV @ 5V
- Current - Input Bias (Max)：0.3µA @ 5V
- Current - Output (Typ)：-
- Current - Quiescent (Max)：1mA
- CMRR, PSRR (Typ)：86.02dB CMRR, 86.02dB PSRR
- Propagation Delay (Max)：50ns
- Hysteresis：-
- Operating Temperature：0°C ~ 70°C
- Package / Case：14-SOIC (0.154", 3.90mm Width)
- Mounting Type：Surface Mount
- Supplier Device Package：14-SOIC
- Grade：-
- Qualification：-
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Overview
The MAX908CSD-T is a quad, high-speed, ultra-low-power voltage comparator designed for single +5V supply operation. It features a typical propagation delay of 40ns with 5mV input overdrive and consumes only 3.5mW per comparator. The device incorporates internal hysteresis to ensure clean output switching and provides TTL-compatible outputs without external pullup circuitry. All inputs and outputs support continuous short-circuit protection to either supply rail.
Feature Summary
- Ultra-low power consumption of 3.5mW per comparator at 5V
- High-speed performance with 40ns propagation delay
- Built-in internal hysteresis eliminates external resistor requirements
- TTL-compatible outputs requiring no external pullup circuitry
Applications
- Battery-Powered Systems
- High-Speed A/D Converters
- Threshold Detectors/Discriminators
Procurement Notes
Verify the specific suffix 'T' indicates tape-and-reel packaging configuration. Confirm the 'C' designation corresponds to the commercial temperature range of 0°C to +70°C. Ensure compatibility with single +5V supply systems as the MAX908 does not support dual supplies unlike the MAX909 variant.
Selection Notes
Select this component for applications requiring multiple comparators in a compact footprint while maintaining low power dissipation. The quad configuration reduces board space compared to using individual dual units. Verify that the 40ns delay meets system timing requirements and that the fixed internal hysteresis aligns with noise immunity needs.
Part Context
This part belongs to the MAX907/MAX908/MAX909 family of single-supply TTL comparators manufactured by Analog Devices/Maxim Integrated. The MAX908 specifically offers a quad-channel configuration in 14-pin packages, distinguishing it from the dual MAX907 and single MAX909 variants which include additional features like complementary outputs or latches.
Replacement Considerations
The datasheet notes the MAX909 was manufactured using an unavailable process, but explicitly states other parts on the sheet are unaffected. No direct substitute part numbers are listed in the provided documentation.
