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HCF4538B
DUAL MONOSTABLE MULTIVIBRATOR
s
s
s
s s s s
s s
s
s s
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 = 25C 100% TESTED FOR QUIESCENT CURRENT MEETS ALL REQUIREMENTS OF JEDEC JESD13B " STANDARD SPECIFICATIONS FOR DESCRIPTION OF B SERIES CMOS DEVICES"
DIP
SOP
ORDER CODES
PACKAGE DIP SOP TUBE HCF4538BEY HCF4538BM1 T&R HCF4538M013TR
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 PIN CONNECTION
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
September 2001
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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 4K. The max. and min. values of external capacitance, CX, are 100 F and 5nF, respectively. PIN DESCRIPTION
PIN No 4, 12 5, 11 3, 13 1, 15 2, 14 6, 10 7, 9 8 16 SYMBOL +TR -TR RESET CX1, CX2 RXCX1 RXCX2 Q1, Q2 Q1, Q2 VSS VDD NAME AND FUNCTION Trigger Inputs (Low to High, Edge-Triggered) Trigger Inputs (High to Low, Edge-Triggered) Direct Reset Inputs (Active Low) External Capacitor Connections External Resistor/Capacitor Connections Pulse Outputs Complementary Pulse Outputs Negative Supply Voltage Positive Supply Voltage
Terminals 1, 8, 15 are electrically connected internally
FUNCTIONAL DIAGRAM
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TABLE 1 : Functional Terminal Connections
VDD to Term. N VSS to Term. N Input Pulse to Term. N Other Connections
FUNCTION Leading Edge Trigger/ Retriggerable Leading Edge Trigger/Non Retriggerable Trailing Edge Trigger/ Retriggerable Trailing Edge Trigger/Non Retriggerable
Mono (1) Mono (2) Mono (1) Mono (2) Mono (1) Mono (2) Mono (1) Mono (2) 3, 5 3 3 3 11, 13 13 13 13 4 12 4 4 5 5 12 12 11 11 4, 6 12, 10 5, 7 11, 9
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
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LOGIC DIAGRAM
ABSOLUTE MAXIMUM RATINGS
Symbol VDD VI II PD Top Tstg Supply Voltage DC Input Voltage DC Input Current Power Dissipation per Package Power Dissipation per Output Transistor Operating Temperature Storage Temperature Parameter Value -0.5 to +22 -0.5 to VDD + 0.5 10 200 100 -55 to +125 -65 to +150 Unit V V mA mW mW C C
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 VI Top Supply Voltage Input Voltage Operating Temperature Parameter Value 3 to 20 0 to VDD -55 to 125 Unit V V C
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DC SPECIFICATIONS
Test Condition Symbol Parameter VI (V) 0/5 0/10 0/15 0/20 0/5 0/10 0/15 5/0 10/0 15/0 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 VO (V) |IO| VDD (A) (V) 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 = 25C Min. Typ. 0.04 0.04 0.04 0.08 4.95 9.95 14.95 0.05 0.05 0.05 3.5 7 11 1.5 3 4 -1.6 -0.51 -1.3 -3.4 -0.51 -1.3 -3.4 -3.2 -1 -2.6 -6.8 1 2.6 6.8 10-5 5 0.1 7.5 -1.3 -0.42 -1.1 -2.8 -0.42 -1.1 -2.8 1 3.5 7 11 1.5 3 4 -1.3 -0.42 -1.1 -2.8 -0.42 -1.1 -2.8 1 Max. 5 10 20 100 4.95 9.95 14.95 0.05 0.05 0.05 3.5 7 11 1.5 3 4 Value -40 to 85C Min. Max. 150 300 600 3000 4.95 9.95 14.95 0.05 0.05 0.05 -55 to 125C Min. Max. 150 300 600 3000 Unit
IL
Quiescent Current
A
VOH
High Level Output Voltage Low Level Output Voltage High Level Input Voltage Low Level Input Voltage Output Drive Current
VOL
VIH
VIL
IOH
IOL
Output Sink Current Input Leakage Current Input Capacitance
0/5 0/5 0/10 0/15 0/5 0/10 0/15 0/18
<1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1
V
V
V
V
mA
mA A pF
II CI
Any Input Any Input
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
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DYNAMIC ELECTRICAL CHARACTERISTICS (Tamb = 25C, CL = 50pF, RL = 200K, tr = tf = 20 ns)
Test Condition Symbol Parameter 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 15 5 10 15 Any Input 0 0 0 5 7.5 Min. Value (*) Typ. 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 1 ns pF Max. 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 Unit
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 Minimum Input Pulse Width +TR, -TR or Reset Output Pulse Width - Q or Q (CX = 0.005 F, RX = 10K (1)) tWT Output Pulse Width - Q or Q (CX = 0.1F, RX = 100K) Output Pulse Width - Q or Q (CX = 10F, RX = 100K) Pulse Width Match Between Circuits in Same Package : (100(T1 - T2)/T1) (CX = 0.1F, RX = 100K) Minimum Retrigger Time
ns
RL = 1K
ns
RL = 1K 57 55 55 9.4 9.4 9.5 0.95 0.95 0.96
ns
tWT
s
ms
tWT
s
tW
%
trr
CIN
Input Capacitance
(*) Typical temperature coefficient for all VDD value is 0.3 %/C. (1) Minimum RX value = 4K , minimum CX value = 5000 pF
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TEST CIRCUIT
CL = 50pF or equivalent (includes jig and probe capacitance) RL = 200K RT = ZOUT of pulse generator (typically 50)
WAVEFORM : PROPAGATION DELAY TIMES (f=1MHz; 50% duty cycle)
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Plastic DIP-16 (0.25) MECHANICAL DATA
mm. DIM. MIN. a1 B b b1 D E e e3 F I L Z 3.3 1.27 8.5 2.54 17.78 7.1 5.1 0.130 0.050 0.51 0.77 0.5 0.25 20 0.335 0.100 0.700 0.280 0.201 1.65 TYP MAX. MIN. 0.020 0.030 0.020 0.010 0.787 0.065 TYP. MAX. inch
P001C
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SO-16 MECHANICAL DATA
DIM. A a1 a2 b b1 C c1 D E e e3 F G L M S 3.8 4.6 0.5 9.8 5.8 1.27 8.89 4.0 5.3 1.27 0.62 8 (max.) 0.149 0.181 0.019 10 6.2 0.35 0.19 0.5 45 (typ.) 0.385 0.228 0.050 0.350 0.157 0.208 0.050 0.024 0.393 0.244 0.1 mm. MIN. TYP MAX. 1.75 0.2 1.65 0.46 0.25 0.013 0.007 0.019 0.003 MIN. inch TYP. MAX. 0.068 0.007 0.064 0.018 0.010
PO13H
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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. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. (c) The ST logo is a registered trademark of STMicroelectronics (c) 2001 STMicroelectronics - Printed in Italy - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia - Malta - Morocco Singapore - Spain - Sweden - Switzerland - United Kingdom (c) http://www.st.com
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