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Product Detailed Parameters
- Description：IC COMPARATOR 1 W/LATCH 8SO
- Series：UltraFast™
- Mfr：Analog Devices Inc.
- Package：Tube
- Type：with Latch
- Number of Elements：1
- Output Type：CMOS, Complementary, TTL
- Voltage - Supply, Single/Dual (±)：-
- Voltage - Input Offset (Max)：2.5mV @ ±5V
- Current - Input Bias (Max)：4.5µA @ ±5V
- Current - Output (Typ)：20mA
- Current - Quiescent (Max)：8.5mA
- CMRR, PSRR (Typ)：100dB CMRR, 100dB PSRR
- Propagation Delay (Max)：9ns
- Hysteresis：-
- Operating Temperature：0°C ~ 70°C
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Mounting Type：Surface Mount
- Supplier Device Package：8-SO
- Grade：-
- Qualification：-
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Overview
The LT1394CS8#PBF is a single-channel analog comparator in an 8-lead SOIC package. It features a propagation delay of 7 ns and operates on a supply voltage range from 4.5 V to 10 V. The device draws 6 mA of operating current and provides complementary CMOS/TTL outputs with a 4 mA output current capability. Input offset voltage is specified at 800 µV, with an input bias current of 7 µA. Common mode rejection ratio is 100 dB, and power supply rejection ratio is 65 dB.
Feature Summary
- Features complementary TTL and CMOS compatible outputs for direct logic interfacing.
- Includes an internal latch mechanism to retain data at the outputs when enabled.
- Input common mode range extends down to the negative supply rail.
- Operates stably without requiring a minimum input slew rate.
Applications
- High Speed A/D Converters
- Zero-Crossing Detectors
- Current Sense for Switching Regulators
- Fast Pulse Height/Width Discriminators
Procurement Notes
Verify the specific suffix #PBF indicates lead-free compliance and RoHS adherence. Confirm the S8 package designation matches the required surface mount footprint. Ensure the temperature grade aligns with the intended operational environment limits.
Selection Notes
Select this component for applications requiring fast response times with low power consumption. The ground-sensing input capability simplifies single-supply designs. Verify that the latch functionality meets the system's data retention requirements.
Part Context
This part belongs to the UltraFast comparator series from Analog Devices. It shares pin compatibility with legacy parts like the LT1016 and LT1116. The design focuses on high speed stability and low offset voltage for precision timing applications.
Replacement Considerations
LT1394IS8#PBF
FAQ
Can the inputs exceed the supply voltages?
Yes, the inputs can exceed the supplies without causing phase reversal.
What is the function of the LATCH ENABLE pin?
Holding this pin high retains the current output state independent of the input signals.
