LT1394 - 7ns, Low Power, Single Supply, Ground-Sensing Comparator

The LT®1394 is an UltraFast (7ns) comparator with complementary outputs and latch. The input common mode range extends from 1.5V below the positive supply down to the negative supply rail. Like the LT1016, LT1116 and LT1671, this comparator has complementary outputs designed to interface directly to TTL or CMOS logic. The LT1394 may operate from either a single 5V supply or dual ±5V supplies. Low offset voltage specifications and high gain allow the LT1394 to be used in precision applications. The LT1394 is designed for improved speed and stability for a wide range of operating conditions. The output stage provides active drive in both directions for maximum speed into TTL, CMOS or passive loads with minimal cross-conduction current. Unlike other fast comparators, the LT1394 remains stable even for slow transitions through the active region, which eliminates the need to specify a minimum input slew rate. The LT1394 has an internal, TTL/CMOS compatible latch for retaining data at the outputs. The latch holds data as long as the LATCH pin is held high. Device parameters such as gain, offset and negative power supply current are not significantly affected by variations in negative supply voltage.

  • UltraFastT™: 7ns
  • Low Power: 6mA
  • Low Offset Voltage: 0.8mV
  • Operates Off Single 5V or Dual ±5V Supplies
  • Input Common Mode Extends to Negative Supply
  • No Minimum Input Slew Rate Requirement
  • Complementary TTL Outputs
  • Inputs Can Exceed Supplies without Phase Reversal
  • Pin Compatible with LT1016, LT1116 and LT1671
  • Output Latch Capability
  • Available in 8-Lead MSOP and SO Packages
LT1394 Typical Application
LT1394 Typical Application
  • High Speed A/D Converters
  • Zero-Crossing Detectors
  • Current Sense for Switching Regulators
  • Extended Range V/F Coverters
  • Fast Pulse Height/Width Discriminators
  • High Speed Triggers
  • Line Receivers
  • High Speed Sampling Circuits
LT1394 Package Drawing
LT1394 Package Drawing
Order Information 订购型号
器件型号封装温度价格 (以 1 ~ 99 片为批量)价格 (以 1000 片为批量) *
LT Journal
CAD 符号
LT1394 - 7ns, Low Power, Single Supply, Ground-Sensing Comparator
AN118 - High Voltage, Low Noise, DC/DC Converters
AN72 - A Seven-Nanosecond Comparator for Single Supply Operation
AN79 - 30 Nanosecond Settling Time Measurement for a Precision Wideband Amplifier
AN85 - Low Noise Varactor Biasing with Switching Regulators: Vanquishing Villainous Vitiators Vis-à-Vis Vital Varactors
DN185 - A Seven Nanosecond Comparator for Single-Supply Operation
DN248 - Rail-to-Rail I/O and 2.4V Operation Allow UltraFast Comparators to be Used on Low Voltage Supplies
R377 Reliability Data
Feb 2001 New UltraFast Comparators: Rail-to-Rail Inputs and 2.4V Operation Allow Use on Low Supplies
May 1998 A 7ns, 6mA, Single-Supply Comparator Fabricated on Linear
Nov 1998 A 4.5ns, 4mA, Single-Supply, Dual Comparator Optimized for 3V/5V Operation
LT1394 Footprints and Symbols