Texas Instruments SE555P, Timer Circuit, 8-Pin PDIP, Mounting Type: Through Hole, Timer Type: Standard, Number of Internal Timers: 1, Minimum Operating Supply Voltage: 4.5 V, Maximum Operating Supply Voltage: 18 V, Minimum Operating Temperature: -55 °C, Maximum Operating Temperature: +125 °C, Maximum Quiescent Current: 12mA, Maximum Low Level Output Current: 200mA, Maximum High Level Output Current: -200mA, Dimensions: 9.81 x 6.35 x 4.57mm, Length: 9.81mm