NTE926 Integrated Circuit Quad Timer Description: The NTE926 quad timer is a monolithic timing device which can be used to produce four independent timing functions. The NTE926 output sinks current. This highly stable, general purpose controller can be used in a monostable mode to produce accurate time delaysfrom microseconds to hours. In the time delay mode of operation, the time is precisely controlled by one external resistor and one capacitor. A stable operation can be achieved by using two of the four timer sections. The four timer section in the NTE926 are edgetriggered, therefore, when connected in tandem for sequential timing applications, no coupling capacitors are required. Output current capability of 100mA is provided in both devices. Features: 100mA Output Current per Section Edgetriggered (No Coupling Capacitor) Output Independent of Trigger Conditions Wide Supply Voltage Range 4.5V to 18V Timer Intervals from Microseconds to Hours Time Period Equals RC Applications: Sequential Timing Time Delay Generation Precision Timing Quad OneShot Absolute Maximum Ratings: Supply Voltage, V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +16V CC Maximum Power Dissipation (T = +25C), P . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1450mW A D Derate Above 25C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.6mW/C Operating Ambient Temperature Range, T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to +70C A Storage Temperature Range, T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 to +150C stg Lead Soldering Temperature (10 Sec Max), T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +300C SOLDDC & AC Electrical Characteristics: (T = +25C, V = +5V, unless otherwise specified) A CC Parameter Symbol Test Conditions Min Typ Max Unit Supply Voltage V 4.5 16 V CC Supply Current I V = Reset = 15V 16 36 mA CC CC Timing Accuracy (t = RC) R = 2k to 100k , C = 1 F Initial Accuracy 2 5 % Drift with Temperature 30 150 ppm/C Drift with Supply Voltage 0.1 0.9 %/V Trigger Voltage V = 15V, Note 1 0.8 2.4 V CC Trigger Current Trigger = 0V 5 100 A Reset Voltage Note 2 0.8 2.4 V Reset Current Reset 50 500 A Threshold Voltage 0.63 x V CC Threshold Leakage 15 nA Output Voltage V I = 10mA, Note 3 0.1 0.4 V OUT L 1.0 2.0 V Output Leakage 10 500 nA Propagation Delay t 1.0 S PD Rise Time of Output t I = 100mA 100 nS R L Fall Time of Output t I = 100mA 100 nS F L Note 1. The trigger functions only on the falling edge of the trigger pulse only after previously being high. After reset, the trigger must be brought high and then low to implement triggering. Note 2. For reset below 0.8V, outputs set low and trigger inhibited. For reset above 2.4V, trigger enabled. Note 3. The NTE926 output structure is opencollector which requires a pullup resistor to V to CC sink current. The output is normally low sinking current. Pin Connection Diagram 16 9 .260 (6.6) Max Output A 1 16 Output D Timing A 2 15 Timing D 18 Trigger A 3 14 Trigger D Control Voltage 4 13 Reset .785 (19.9) .300 Max (7.62) V 5 12 GND CC .200 (5.08) Trigger B 6 11 Trigger C Max .245 Timing B 7 10 Timing C (6.22) Min Output B 8 9 Output C .100 (2.54) .700 (17.7)