HCF4538B DUAL MONOSTABLE MULTIVIBRATOR ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ RETRIGGERABLE/RESETTABLE CAPABILITY TRIGGER AND RESET PROPAGATION DELAYS INDEPENDENT OF RX, CX TRIGGERING FROM LEADING OR TRAILING EDGE Q AND Q BUFFERED OUTPUT AVAILABLE SEPARATE RESETS WIDE RANGE OF OUTPUT PULSE WIDTHS QUIESCENT CURRENT SPECIFIED UP TO 20V 5V, 10V AND 15V PARAMETRIC RATINGS SCHMITT TRIGGER INPUT ALLOWS UNLIMITED RISE AND FALL TIMES ON +TR AND -TR INPUTS INPUT LEAKAGE CURRENT II = 100nA (MAX) AT VDD = 18V TA = 25°C 100% TESTED FOR QUIESCENT CURRENT MEETS ALL REQUIREMENTS OF JEDEC JESD13B " STANDARD SPECIFICATIONS FOR DESCRIPTION OF B SERIES CMOS DEVICES" DESCRIPTION The HCF4538B is a monolithic integrated circuit fabricated in Metal Oxide Semiconductor technology available in DIP and SOP packages. The HCF4538B dual precision monostable multivibrator provides stable retriggerable/ resettable one-shot operation for any fixed voltage DIP SOP ORDER CODES PACKAGE TUBE T&R DIP SOP HCF4538BEY HCF4538BM1 HCF4538M013TR timing application. An external resistor (RX) and an external capacitor (CX) control the timing and accuracy for the circuit. Adjustment of RX and CX provides a wide range of output pulse widths from the Q and Q terminals. The time delay from trigger input to output transition (trigger propagation delay) and the time delay from reset input to output transition (reset propagation delay) and the time delay from reset input to output transition (reset propagation delay) are independent of RX and CX. Precision control of output pulse width is achieved through linear CMOS techniques. Leading edge triggering (+TR) and trailing edge triggering (-TR) inputs are provided for triggering PIN CONNECTION September 2001 1/10 HCF4538B from either edge of an input pulse. An unused +TR input should be tied to VSS. An unused -TR input should be tied to VDD . A RESET (on low level) is provided for immediate termination of the output pulse or to prevent output pulses when power is turned on. An unused RESET input should be tied to VDD . However, if an entire section of the HCF4538B is not used, its inputs must be tied to either VDD or VSS (see table 1). In normal operation the circuit triggers (extends the output IINPUT EQUIVALENT CIRCUIT pulse one period) on the application of each new trigger pulse. For operation in the non-retiggerable mode, Q is connected to -TR when leading edge triggering (+TR) is used or Q is connected to +TR when trailing edge triggering (-TR) is used. The time period (T) for this multivibrator can be calculated by : T = RX CX. The min. value of external resistance, RX, is 4KΩ. The max. and min. values of external capacitance, CX, are 100 µF and 5nF, respectively. PIN DESCRIPTION PIN No SYMBOL NAME AND FUNCTION 4, 12 +TR 5, 11 -TR 3, 13 RESET 1, 15 CX1, CX2 2, 14 RXCX1 RXCX2 External Resistor/Capacitor Connections 6, 10 Q1, Q2 7, 9 Q1, Q2 Pulse Outputs Complementary Pulse Outputs Trigger Inputs (Low to High, Edge-Triggered) Trigger Inputs (High to Low, Edge-Triggered) Direct Reset Inputs (Active Low) External Capacitor Connections 8 VSS Negative Supply Voltage 16 VDD Positive Supply Voltage Terminals 1, 8, 15 are electrically connected internally FUNCTIONAL DIAGRAM 2/10 HCF4538B TABLE 1 : Functional Terminal Connections FUNCTION VDD to Term. N° VSS to Term. N° Input Pulse to Term. N° Other Connections Mono (1) Mono (2) Mono (1) Mono (2) Mono (1) Mono (2) Mono (1) Mono (2) Leading Edge Trigger/ Retriggerable Leading Edge Trigger/Non Retriggerable Trailing Edge Trigger/ Retriggerable Trailing Edge Trigger/Non Retriggerable 3, 5 11, 13 4 12 3 13 4 12 3 13 5 11 3 13 5 11 4 12 5, 7 11, 9 4, 6 12, 10 A Retriggerable one-shot multivibrator has an output pulse width which is extended on full time period (T) after application of the last trigger pulse. A Non-Retriggerable one-shot multivibrator has a time period (T) referenced from the application of the firs trigger pulse. LOGIC DIAGRAM 3/10 HCF4538B LOGIC DIAGRAM ABSOLUTE MAXIMUM RATINGS Symbol VDD Parameter Supply Voltage Value Unit -0.5 to +22 V VI DC Input Voltage -0.5 to VDD + 0.5 V II DC Input Current ± 10 mA 200 100 mW mW Top Power Dissipation per Package Power Dissipation per Output Transistor Operating Temperature -55 to +125 °C Tstg Storage Temperature -65 to +150 °C PD Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied. All voltage values are referred to VSS pin voltage. RECOMMENDED OPERATING CONDITIONS Symbol VDD 4/10 Parameter Supply Voltage VI Input Voltage Top Operating Temperature Value Unit 3 to 20 V 0 to VDD V -55 to 125 °C HCF4538B DC SPECIFICATIONS Test Condition Symbol IL VOH VOL VIH VIL IOH IOL II CI Parameter Quiescent Current High Level Output Voltage Low Level Output Voltage VI (V) 0/5 0/10 0/15 0/20 0/5 0/10 0/15 5/0 10/0 15/0 High Level Input Voltage Low Level Input Voltage Output Drive Current Output Sink Current Input Leakage Current Input Capacitance VO (V) 0/5 0/5 0/10 0/15 0/5 0/10 0/15 0/18 0.5/4.5 1/9 1.5/13.5 4.5/0.5 9/1 13.5/1.5 2.5 4.6 9.5 13.5 0.4 0.5 1.5 Value |IO| VDD (µA) (V) <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 Any Input Any Input 5 10 15 20 5 10 15 5 10 15 5 10 15 5 10 15 5 5 10 15 5 10 15 18 TA = 25°C Min. Typ. Max. 0.04 0.04 0.04 0.08 5 10 20 100 4.95 9.95 14.95 -40 to 85°C -55 to 125°C Min. Min. 150 300 600 3000 4.95 9.95 14.95 0.05 0.05 0.05 4.95 9.95 14.95 3.5 7 11 1.5 3 4 -3.2 -1 -2.6 -6.8 1 2.6 6.8 ±0.1 5 7.5 0.05 0.05 0.05 1.5 3 4 V V 1.5 3 4 -1.3 -0.42 -1.1 -2.8 -0.42 -1.1 -2.8 ±1 µA V 3.5 7 11 -1.3 -0.42 -1.1 -2.8 -0.42 -1.1 -2.8 ±10-5 Max. 150 300 600 3000 0.05 0.05 0.05 3.5 7 11 -1.6 -0.51 -1.3 -3.4 -0.51 -1.3 -3.4 Max. Unit V mA mA ±1 µA pF The Noise Margin for both "1" and "0" level is: 1V min. with VDD =5V, 2V min. with VDD=10V, 2.5V min. with VDD=15V 5/10 HCF4538B DYNAMIC ELECTRICAL CHARACTERISTICS (Tamb = 25°C, CL = 50pF, RL = 200KΩ, tr = tf = 20 ns) Test Condition Symbol Parameter tTLH tTHL Transition Time tPLH tPHL Propagation Delay Time +TR or -TR to Q or Q tPLH tPHL Propagation Delay Time Reset to Q or Q tWH tWL tWT Minimum Input Pulse Width +TR, -TR or Reset Output Pulse Width - Q or Q (CX = 0.005 µF, RX = 10KΩ (1)) tWT tWT tW trr CIN Output Pulse Width - Q or Q (CX = 0.1µF, RX = 100KΩ) Output Pulse Width - Q or Q (CX = 10µF, RX = 100KΩ) Pulse Width Match Between Circuits in Same Package : (100(T1 - T2)/T1) (CX = 0.1µF, RX = 100KΩ) Minimum Retrigger Time Input Capacitance VDD (V) 5 10 15 5 10 15 5 10 15 5 10 15 5 10 15 5 10 15 5 10 15 5 10 Min. RL = 1KΩ RL = 1KΩ 57 55 55 9.4 9.4 9.5 0.95 0.95 0.96 5 10 15 Any Input Unit Typ. Max. 100 50 40 300 150 100 250 125 95 80 40 30 60.6 58.9 59.1 9.97 9.95 10.0 1.0 1.0 1.0 ±1 ±1 200 100 80 600 300 200 500 250 190 140 80 60 64.5 63.0 63.5 10.5 10.6 10.6 1.06 1.06 1.07 ns ns ns ns µs ms s % ±1 15 (*) Typical temperature coefficient for all VDD value is 0.3 %/°C. (1) Minimum RX value = 4KΩ , minimum CX value = 5000 pF 6/10 Value (*) 0 0 0 ns 5 7.5 pF HCF4538B TEST CIRCUIT CL = 50pF or equivalent (includes jig and probe capacitance) RL = 200KΩ RT = ZOUT of pulse generator (typically 50Ω) WAVEFORM : PROPAGATION DELAY TIMES (f=1MHz; 50% duty cycle) 7/10 HCF4538B Plastic DIP-16 (0.25) MECHANICAL DATA mm. inch DIM. MIN. a1 0.51 B 0.77 TYP MAX. MIN. TYP. MAX. 0.020 1.65 0.030 0.065 b 0.5 0.020 b1 0.25 0.010 D 20 0.787 E 8.5 0.335 e 2.54 0.100 e3 17.78 0.700 F 7.1 0.280 I 5.1 0.201 L Z 3.3 0.130 1.27 0.050 P001C 8/10 HCF4538B SO-16 MECHANICAL DATA DIM. mm. MIN. TYP A a1 inch MAX. MIN. TYP. 1.75 0.1 0.068 0.2 a2 MAX. 0.003 0.007 1.65 0.064 b 0.35 0.46 0.013 0.018 b1 0.19 0.25 0.007 0.010 C 0.5 0.019 c1 45° (typ.) D 9.8 10 0.385 0.393 E 5.8 6.2 0.228 0.244 e 1.27 0.050 e3 8.89 0.350 F 3.8 4.0 0.149 0.157 G 4.6 5.3 0.181 0.208 L 0.5 1.27 0.019 0.050 M S 0.62 0.024 8° (max.) PO13H 9/10 HCF4538B Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. 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