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The part KA2903 is a dual differential comparator manufactured by SEC (Samsung Electronics). Below are the factual specifications, descriptions, and features from the Manufactor Datasheet:

Specifications:

• Manufacturer: SEC (Samsung Electronics)
• Type: Dual Differential Comparator
• Supply Voltage (VCC): +5V to +36V (single supply) or ±2.5V to ±18V (dual supply)
• Input Offset Voltage (Max): 7mV
• Input Bias Current (Max): 250nA
• Response Time (Typical): 1.3μs
• Operating Temperature Range: -40°C to +85°C
• Package Options: DIP-8, SOIC-8

Descriptions:

• The KA2903 is a dual independent precision voltage comparator capable of single or split-supply operation.
• It is designed for use in level detection, low-level sensing, and memory driving applications.
• The device features low input bias current and offset voltage, making it suitable for precision applications.

Features:

• Low Power Consumption: Typically 0.8mA per comparator
• Wide Supply Voltage Range: Compatible with both single and dual supplies
• Low Input Bias Current: Ensures minimal loading on signal sources
• High Voltage Gain: Provides accurate comparison even with small input differences
• Output Compatible with TTL, CMOS, and MOS Logic

This information is strictly based on the manufacturer's datasheet.