SN74LS279AN

The SN74LS279AN is a Quad S-R Latch integrated circuit manufactured by Texas Instruments. This component is designed for logic applications and features four independent S-R latches within a single package. It operates with a supply voltage range of 4.75V to 5.25V and functions across an operating temperature range of 0°C to 70°C.

The SN74LS279AN utilizes bipolar technology with push-pull output type and supports a maximum data rate of 70 Mbps. It has an IOL of 8mA and an IOH of -0.4mA. The device is characterized by its very high speed, with propagation delays typically between 5-10ns.

This latch is available in a 16-pin DIP (Dual In-line Package) with a 0.300-inch lead spacing, suitable for through-hole mounting. 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, as the Q output will be unpredictable in this condition.