9601/DM9601 Retriggerable One Shot General Description Features These retriggerable one shots provide the designer with four inputs; two active high and two active low. This permits a choice of either leading-edge or trailing-edge triggering, independent of input transition times. When input conditons for triggering are met, a new cycle starts and the external capacitor is rapidly discharged and then allowed to charge again. The retriggerable feature allows for output pulse widths to be expanded. In fact a continuous true output can be maintained by having an input cycle time which is shorter than the output cycle time. Retriggering may be inhibited by tying the Q output to an active low input. Y Y Y Y Y Y Y Y High speed operationÐinput repetition rate l 10 MHz Flexibility of operationÐoptional retriggering/lock-out capability Output pulse width rangeÐ50 ns to % Leading or trailing edge triggering Complementary outputs/inputs Input clamping diodes DTL/TTL compatible logic levels Alternate Military/Aerospace device (9601) is available. Contact a National Semiconductor Sales Office/Distributor for specifications. Connection Diagram Dual-In-Line Package TL/F/6610 – 1 Order Number 9601DMQB, 9601FMQB, DM9601J, DM9601W or DM9601N See NS Package Number J14A, N14A or W14B Function Table Inputs A2 B1 B2 Q Q H X X L L L X X X H H X X X X X L L L X L X H X X L H H L L L L É É L É É É É É H H H H ß ß H ß ß ß ß ß v v v v H C1995 National Semiconductor Corporation TL/F/6610 Outputs A1 u H H u H H H H u H H u H H H H e High Logic Level L e Low Logic Level Xe Either Low or High Logic Level u e Low to High Level ve Transition High to Low Level Transition É e Positive Pulse ß e Negative Pulse RRD-B30M105/Printed in U. S. A. 9601/DM9601 Retriggerable One Shot June 1989 Absolute Maximum Ratings (Note) Note: The ‘‘Absolute Maximum Ratings’’ are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the ‘‘Electrical Characteristics’’ table are not guaranteed at the absolute maximum ratings. The ‘‘Recommended Operating Conditions’’ table will define the conditions for actual device operation. If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/Distributors for availability and specifications. Supply Voltage 7V Input Voltage 5.5V Operating Free Air Temperature Range b 55§ C to a 125§ C Military Commercial 0§ to a 70§ C Storage Temperature Range b 65§ C to a 150§ C Recommended Operating Conditions Symbol Military Parameter VCC Supply Voltage VIH High Level Input Voltage TA e b55§ C Commercial Nom Max Min Nom Max 4.5 5 5.5 4.75 5 5.25 TA e 0§ C 1.9 1.7 1.8 TA e 75§ C V 1.6 TA e 125§ C Low Level Input Voltage V 2 TA e 25§ C VIL Units Min 1.5 TA e b55§ C 0.85 TA e 0§ C 0.85 TA e 25§ C 0.9 0.85 TA e 75§ C V 0.85 TA e 125§ C 0.85 IOH High Level Output Current b 0.72 b 0.96 mA IOL Low Level Output Current 10 12.8 mA TA Free Air Operating Temperature 75 §C b 55 125 0 Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted) Symbol Parameter Conditions (Note 3) VI Input Clamp Voltage VCC e Min, II e b12 mA VOH High Level Output Voltage VCC e Min, IOH e Max VIL e Max, VIH e Min, (Note 4) VOL Low Level Output Voltage VCC e Min, IOL e Max VIL e Max, VIH e Min (Note 4) IIH High Level Input Current VCC e Max, VI e 4.5V IIL Low Level Input Current VCC e Max Short Circuit Output Current VCC e Max (Notes 2 and 4) Supply Current VCC e Max IOS ICC Min Typ (Note 1) Max Units b 1.5 V 2.4 V MIL 0.4 COM 0.45 60 MIL VIN e 0.40V b 1.6 COM VIN e 0.45V b 1.6 MIL b 10 b 40 COM b 10 b 40 25 Note 1: All typicals are at VCC e 5V, TA e 25§ C. Note 2: Not more than one output should be shorted at a time. Note 3: Unless otherwise noted, RX e 10k between PIN 13 and VCC on all tests. Note 4: Ground PIN 11 for VOL test on PIN 6, VOH and IOS tests on PIN 8. Open PIN 11 for VOL test on PIN 8, VOH and IOS tests on PIN 6. 2 V mA mA mA mA Switching Characteristics at VCC e 5V and TA e 25§ C (See Section 1 for Test Waveforms and Output Load) Symbol tPLH tPHL Parameter From (Input) To (Output) Conditions Propagation Delay Time Low to High Level Output Negative Trigger Input to True Output Propagation Delay Time High to Low Level Output Negative Trigger Input to Complement Output Min Max Units 40 ns 40 ns 65 ns 3.76 ms 50 pF CL e 15 pF CX e 0 RX e 5 kX tPW(MIN) Minimum True Output Pulse Width tPW Pulse Width RX e 10 kX CX e 1000 pF CSTRAY Maximum Allowable Wiring Capacitance Pin 13 to GND RX External Timing Resistor DM96 25 kX RX External Timing Resistor DM86 50 kX 3.08 Operating Rules 5. Retrigger pulse width (see Figure 3 ) is calculated as follows: 1. An external resistor RX and an external capacitor CX are required for operation. The value of RX can vary between the limits shown in switching characteristics. The value of CX is optional and may be adjusted to achieve the required output pulse width. 2. Output pulse width tPW may be calculated as follows: Ð Ð tW e tPW a tPLH e K RXCX 1 a ( 0.7 (for CX l 103 pF) RX K & 0.34 RX in kX, CX in pF and tPW in ns. (For CX k 103 pF, see curve.) 3. RX and CX must be kept as close as possible to the circuit in order to minimize stray capacitance and noise pickup. If remote trimming is required, RX may be split up such that at least RX(MIN) must be as close as possible to the circuit and the remote portion of the trimming resistor R k RX(MAX) b RX. 4. Set-up time (t1) for input trigger pulse must be l 40 ns. (See Figure 1 ). Release time (t2) for input trigger pulse must be l 40 ns. (See Figure 2 ). tPW e K RXCX 1 a ( 0.7 a tPLH RX TL/F/6610 – 4 FIGURE 3 Typical ‘‘K’’ Coefficient Variation vs Timing Capacitance The multiplicative factor ‘‘K’’ varies as a function of the timing capacitor, CX. The graph below details this characteristic: TL/F/6610 – 2 FIGURE 1 TL/F/6610 – 5 *For further detailed device characteristics and output performance, please refer to the NSC one-shot application note, AN-366. TL/F/6610 – 3 FIGURE 2 3 Typical Performance Characteristics Output Pulse Width vs Timing Resistance And Capacitance For CX k 103 pF Normalized Output Pulse Width vs Ambient Temperature Normalized Output Pulse Width vs Supply Voltage Normalized Output Pulse Width vs Operating Duty Cycle Pulse Width vs Timing Resistance Output Pulse Width vs Ambient Temperature TL/F/6610 – 6 Schematic Diagram TL/F/6610 – 7 4 Physical Dimensions inches (millimeters) 14-Lead Ceramic Dual-In-Line Package (J) Order Number 9601DMQB or DM9601J NS Package Number J14A 14-Lead Molded Dual-In-Line Package (N) Order Number DM9601N NS Package Number N14A 5 9601/DM9601 Retriggerable One Shot Physical Dimensions inches (millimeters) (Continued) 14-Lead Ceramic Flat Package (W) Order Number 9601FMQB or DM9601W NS Package Number W14B LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL SEMICONDUCTOR CORPORATION. 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