Product Summary

The LM78H24K is a highly integrated Data Acquisition system for hardware monitoring of servers, Personal Computers, or virtually any microprocessor based system. The LM78H24K has an on-chip temperature sensor, 5 positive analog inputs, two inverting inputs (for monitoring negative voltages), and an 8-bit ADC. The applications of the LM78H24K are System Hardware Monitoring for Servers and PCs, Office Electronics, Electronic Test Equipment and Instrumentation.

Parametrics

LM78H24K absolute maximum ratings: (1)Positive Supply Voltage (VCC): 6.5V; (2)Voltage on Any Input or Output Pin: -0.3V to (VCC+0.3V); (3)Ground Difference (GNDD–GNDA): ±300 mV; (4)Input Current at any Pin: ±5mA; (5)Package Input Current: ±20 mA; (6)Maximum Junction Temperature(TJ max): 150℃; (7)ESD Susceptibility: Human Body Model: 2000V, Machine Model: 175V; (8)Soldering Information: Vapor Phase (60 seconds): 215℃, Infrared(15 seconds): 220℃; (9)Storage Temperature: -65℃ to +150℃.

Features

LM78H24K features: (1)Temperature sensing; (2)5 positive voltage inputs; (3)2 op amps for negative voltage monitoring; (4)3 fan speed monitoring inputs; (5)Input for additional temperature sensors; (6)Chassis Intrusion Detector input; (7)WATCHDOG comparison of all monitored values; (8)POST code storage RAM; (9)ISA and I2C Serial Bus interfaces.

Diagrams

LM78H24K block diagram