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Product Detailed Parameters
- Description：IC COMPARATOR 1 W/LATCH 8SO
- Series：UltraFast™
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- 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#TRPBF is a single-channel analog comparator from Analog Devices, packaged in an 8-lead SOIC. It features complementary CMOS and TTL outputs with integrated latch capability. The device operates on a single 5V supply or dual ±5V supplies, drawing 6mA of operating current. Key electrical parameters include a typical propagation delay of 7ns, input offset voltage of 0.8mV, and common mode rejection ratio of 100dB. The input common mode range extends to the negative supply rail.
Feature Summary
- Features complementary outputs designed for direct interface with TTL or CMOS logic families.
- Includes an internal latch mechanism to retain output data states upon command.
- Input common mode range extends down to the negative supply rail without phase reversal.
- Operates stably with slow input transitions, eliminating minimum slew rate requirements.
Applications
- High-speed A/D converters
- Zero-crossing detectors
- Current sense circuits for switching regulators
- Fast pulse height/width discriminators
Procurement Notes
Verify the specific suffix TRPBF indicates tape and reel packaging when ordering. Confirm the CS8 package designation matches the required surface mount footprint. Ensure the temperature grade aligns with system operational limits. Cross-reference the manufacturer part number with authorized distributor catalogs to ensure authenticity and correct revision levels.
Selection Notes
Select this component for applications requiring fast response times with low power consumption. The ground-sensing input capability simplifies single-supply designs. Consider the integrated latch feature if signal retention is necessary. Verify that the complementary output drive strength meets the load requirements of the downstream logic circuitry.
Part Context
This part belongs to the LT1394 series of UltraFast comparators. It shares pin compatibility with the LT1016, LT1116, and LT1671 models. The series is characterized by high speed and low power operation. The CS8 variant specifically denotes the plastic small outline package configuration.
Replacement Considerations
LT1016CS8#PBF
FAQ
How does the LATCH pin function?
When the LATCH pin is held high, the outputs remain in a latched condition independent of the current state of the inputs. The pin floats high when disconnected.
What is the input common mode range?
The input common mode range extends from 1.5V below the positive supply down to the negative supply rail.
