SN74LS279ANSR

The SN74LS279ANSR from Texas Instruments is a versatile Quad S-R Latch integrated circuit. It is designed for applications requiring reliable latching functionality with four independent S-R flip-flop latches per package.

This device operates with a supply voltage range of 4.75V to 5.25V and supports a maximum data rate of 70 Mbps. The output current capabilities are 400µA for IOL and -0.4mA for IOH, with a typical IOL of 8mA. The propagation delay is typically between 5ns and 10ns, ensuring high-speed operation.

The SN74LS279ANSR is housed in a 16-SOIC surface mount package, making it suitable for automated assembly processes. It operates within a temperature range of 0°C to 70°C, suitable for various commercial and industrial environments. The '279 offers 4 basic S-R flip-flop latches in one 16-pin, 300-mil package. Under conventional operation, the S-R inputs are normally held high. When the S input is pulsed low, the Q output will be set high. When R is pulsed low, the Q output will be reset low. Normally, the S-R inputs should not be taken low simultaneously. The Q output will be unpredictable in this condition.