M54HC221/221A M74HC221/221A DUAL MONOSTABLE MULTIVIBRATOR . . . . . . . . . HIGH SPEED tPD = 25 ns (TYP) at VCC = 5V LOW POWER DISSIPATION STANDBY STATE ICC=4 µA (MAX.) AT TA=25°C ACTIVE STATE ICC = 700 µA (MAX.) AT VCC=5V HIGH NOISE IMMUNITY VNIH = VNIL = 28 % VCC (MIN.) OUTPUT DRIVE CAPABILITY 10 LSTTL LOADS SYMMETRICAL OUTPUT IMPEDANCE IOH = IOL = 4 mA (MIN.) BALANCED PROPAGATION DELAYS tPLH = tPHL WIDE OPERATING VOLTAGE RANGE VCC (OPR) = 2 V TO 6 V WIDE OUTPUT PULSE WIDTH RANGE tWOUT = 150 ns ∼ 60 s OVER AT VCC = 4.5 V PIN AND FUNCTION COMPATIBLE WITH 54/74LS221 DESCRIPTION The M54/74HC221/221A are high speed CMOS MONOSTABLE multivibrators fabricated with silicon gate C2MOS technology. It achieves the high speed operation similar to equivalent LSTTL while maintaining the CMOS low power dissipation. There are two trigger inputs, A INPUT (negative edge) and B INPUT (positive edge). Triggering on the B input occurs at a particular voltage threshold and is not related to the rise and fall time of the applied pulse. The device may also be triggered by using the CLR input (positive-edge) because of the Schmitt-trigger input ; after triggering the output maintains the MONOSTABLEstate for the time period determined by the external resistor Rx and capacitor Cx.Taking CLR low breaks this MONOSTABLE STATE. If the next trigger pulse occurs during the MONOSTABLE period it makes the MONOSTABLE period longer. Limit for values of Cx and Rx : Cx : NO LIMIT Rx : VCC < 3.0 V 5 K Ω to 1 M Ω VCC ≥ 3.0 V 1 K Ω to 1 M Ω Two different pulse width constants are available: K ≅ 0.7 for HC221 K ≅ 1 for HC221A All inputs are equipped with protection circuits against static discharge and transient excess voltage. October 1993 B1R (Plastic Package) F1R (Ceramic Package) M1R (Micro Package) C1R (Chip Carrier) ORDER CODES : M54HCXXXF1R M74HCXXXXM1R M74HCXXXB1R M74HCXXXC1R PIN CONNECTIONS (top view) NC = No Internal Connection 1/14 M54/M74HC221/221A SYSTEM DIAGRAM TIMING CHART 2/14 M54/M74HC221/221A BLOCK DIAGRAM Note : (1) Cx, Rx, Dx are external components. (2) Dx is a clamping diode. The external capacitor is charged to VCC inthe stand-by state, i.e. no trigger. When the supply voltage is turned off Cx is discharged mainly through an internal parasitic diode (see figures). If Cx is sufficiently large and VCC decreases rapidy, there will be some possibility of damaging the I.C. with a surge current or latch-up. If the voltage supply filter capacitor is large enough and VCC decrease slowly, the surge current is automatically limited and damage the I.C. is avoided. The maximum forward current of the parasitic diode is approximately 20 mA. In cases where Cx is large the time taken for the supply voltage to fall to 0.4 VCC can be calculated as follows : tf ≥ (VCC – 0.7) ⋅ Cx/20mA In cases where tf is too short an external clamping diode is required to protect the I.C. from the surge current. FUNCTIONAL DESCRIPTION STAND-BY STATE The external capacitor, Cx, is fully charged to VCC in the stand-by state. Hence, before triggering, transistor Qp and Qn (connected to the Rx/Cx node) are both turned-off. The two comparators that control the timing and the two reference voltage sources stop operating. The total supply current is therefore only leakage current. TRIGGER OPERATION Triggering occurs when : 1st) A is ”low” and B has a falling edge ; 2nd) B is ”high” and A has a rising edge ; rd 3 ) A is low and B is high and C1 has a rising edge. After the multivibrator has been retriggered comparator C1 and C2 start operating and Qn is turned on. Cx then discharges through Qn. The voltage at the node R/C external falls. When it reaches VREFL the output of comparator C1 becomes low. This in turn resets the flip-flop and Qn is turned off. At this point C1 stops functioning but C2 continues to operate. The voltage at R/C external begins to rise with a time constant set by the external components Rx, Cx. Triggering the multivibrator causes Q to go high after internal delay due to the flip-flop and the gate. Q remains high until the voltage at R/C external rises again to VREFH. At this point C2 output goes low and O goes low. C2 stop operating. That means that after triggering when the voltage R/C external returns to VREFH the multivibrator has returned to its MONOSTABLE STATE. In the case where Rx ⋅ Cx are large enough and the discharge time of the capacitor and the delay time in the I.C. can be ignored, the width of the output pulse tw (out) is as follows : tW(OUT) = 0.70 Cx ⋅ Rx (HC221) tW(OUT) = Cx ⋅ Rx (HC221A) RESET OPERATION CL is normally high. If CL is low, the trigger is not effective because Q output goes low and trigger control flip-flop is reset. Also transistor Op is turned on and Cx is charged quicky to VCC. This means if CL input goes low, the IC becomes waiting state both in operating and non operating state. 3/14 M54/M74HC221/221A TRUTH TABLE INPUTS A OUTPUTS B H CLR H Q Q OUTPUT ENABLE X L H L (*) H (*) INHIBIT H L X H H L (*) H (*) INHIBIT OUTPUT ENABLE L H X X L L H X: Don’t Care OUTPUT ENABLE (*): Except for monostble period INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION IEC LOGIC SYMBOL PIN No 1, 9 SYMBOL 1A, 2A 2, 10 1B, 2B 3, 11 1CLR, 2CLR Direct Reset LOW and Trigger Action at Positive Edge 4, 12 1Q, 2Q Outputs (Active LOW) 7 2REXT/CEXT External Resistor Capacitor Connection 13, 5 14, 6 1Q, 2Q 1CEXT 2CEXT Outputs (Active HIGH) External Capacitor Connection 15 1REXT/CEXT External Resistor Capacitor Connection 8 GND Ground (0V) 16 V CC Positive Supply Voltage 4/14 NOTE NAME AND FUNCTION Trigger Inputs (Negative Edge Triggered) Trigger Inputs (Positive Edge Triggered) INHIBIT M54/M74HC221/221A ABSOLUTE MAXIMUM RATING Symbol Value Unit VCC VI Supply Voltage DC Input Voltage -0.5 to +7 -0.5 to VCC + 0.5 V V VO DC Output Voltage -0.5 to VCC + 0.5 V IIK IOK DC Input Diode Current DC Output Diode Current ± 20 ± 20 mA mA IO DC Output Source Sink Current Per Output Pin ± 25 mA DC VCC or Ground Current ± 50 mA 500 (*) mW ICC or IGND Parameter PD Power Dissipation Tstg TL Storage Temperature Lead Temperature (10 sec) -65 to +150 300 o o C C Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition isnotimplied. (*) 500 mW: ≅ 65 oC derate to 300 mW by 10mW/oC: 65 oC to 85 oC RECOMMENDED OPERATING CONDITIONS Symbol VCC Parameter Supply Voltage VI Input Voltage VO Top Output Voltage Operating Temperature: M54HC Series M74HC Series Input Rise and Fall Time (CLR and A only) tr, tf CX External Capacitor RX External Resistor VCC = 2 V Value 2 to 6 Unit V 0 to VCC V 0 to VCC -55 to +125 -40 to +85 0 to 1000 V C o C ns VCC = 4.5 V 0 to 500 VCC = 6 V 0 to 400 VCC < 3 V VCC ≥ 3 V o > 100 (*) pF 5K to 1M (*) 1K to 1M (*) Ω (*)The maximum allowable values of Cx and Rx are a function of leackage of capacitor Cx, the leackage of HC221/A, and leackage due to the board layout and surface resistance. Susceptibility to externally induced noise signals may occur for Rx > 1MΩ 5/14 M54/M74HC221/221A DC SPECIFICATIONS Test Conditions Symbol VIH V IL Parameter High Level Input Voltage Low Level Input Voltage Value VCC (V) TA = 25 oC 54HC and 74HC Min. Typ. Max. 2.0 1.5 1.5 1.5 4.5 6.0 3.15 4.2 3.15 4.2 3.15 4.2 High Level Output Voltage (Q, Q Output) 0.5 0.5 0.5 4.5 1.35 1.35 1.35 2.0 4.5 6.0 4.5 VOL Low Level Output Voltage (Q, Q Output) 6.0 2.0 4.5 6.0 4.5 6.0 II II ICC ICC’ Input Leakage Current R/C Terminal Off State Current Quiescent Supply Current Active State Supply Current (1) 6/14 1.8 V 1.8 1.9 2.0 1.9 1.9 VI = IO=-20 µA VIH or V IL IO=-4.0 mA 4.4 5.9 4.5 6.0 4.4 5.9 4.4 5.9 4.18 4.31 4.13 4.10 IO=-5.2 mA 5.68 5.8 0.0 5.63 5.60 V VI = IO= 20 µA VIH or V IL IO= 4.0 mA 0.1 0.1 0.1 0.0 0.1 0.1 0.1 0.0 0.17 0.1 0.26 0.1 0.33 0.1 0.40 IO= 5.2 mA 0.18 V 0.26 0.33 0.40 VI = VCC or GND ±0.1 ±1 ±1 µA VI = VCC or GND ±0.5 ±5 ±10 µA 6.0 VI = VCC or GND 4 40 80 µA 2.0 VI = VCC or GND VIN = VCC/2 6.0 6.0 4.5 6.0 (1): Per Circuit 1.8 Unit V 2.0 6.0 V OH -40 to 85 oC -55 to 125 oC 74HC 54HC Min. Max. Min. Max. 45 250 260 350 µA 400 530 650 850 µA 0.7 1 1.3 1.7 mA M54/M74HC221/221A AC ELECTRICAL CHARACTERISTICS (C L = 50 pF, Input t r = tf = 6 ns) Test Conditions Symbol Parameter tTLH tTHL Output Transition Time tPLH tPHL tPLH tPHL tPLH tPHL tWOUT tWOUT ∆tWOUT tW(H) tW(L) tW(L) CIN CPD (*) VCC (V) 2.0 4.5 6.0 Propagation 2.0 Delay Time 4.5 (A, B - Q, Q) 6.0 Propagation 2.0 Delay Time 4.5 (CLRTRIGGER- Q,Q) 6.0 Propagation 2.0 Delay Time 4.5 (CLR - Q, Q) 6.0 Output Pulse 2.0 Width 4.5 (for HC221) 6.0 2.0 4.5 6.0 Output Pulse 2.0 Width 4.5 (for HC221A) 6.0 2.0 4.5 6.0 Output Pulse Width Error Between Circuits in Same Package Minimum Pulse 2.0 Width 4.5 6.0 Minimum Pulse 2.0 Width 4.5 6.0 Input Capacitance Power Dissipation Capacitance CX = 100 pF RX = 10 KΩ CX = 0.1 µF RX = 100 KΩ CX = 100 pF RX = 10 KΩ CX = 0.1 µF RX = 100 KΩ TA = 25 oC 54HC and 74HC Min. Typ. Max. 30 75 8 15 7 13 102 210 30 42 24 36 102 235 30 47 24 40 67 160 20 32 16 27 1.5 1.3 1.2 7 6.9 6.9 1.8 1.5 1.4 10 9.7 9.6 ±1 Value -40 to 85 oC -55 to 125 oC 74HC 54HC Min. Max. Min. Max. 95 110 19 22 16 19 265 315 53 63 45 54 295 355 59 71 50 60 200 240 40 48 34 41 Unit ns ns ns ns µs ms µs ms % 5 174 75 15 13 75 15 13 10 95 19 16 95 19 16 10 110 22 20 110 22 20 10 ns ns pF pF (*) CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without load. (RefertoTestCircuit). Average operting current canbeobtained by thefollowing equation. ICC(opr) =CPD •VCC •fIN +ICC’ Duty/100 + IC/2 (per monostable) (ICC’: Active Supply Current) (Duty:%) 7/14 M54/M74HC221/221A Output Pulse Width Constant Characteristics (for HC221) Output Pulse Width Constant Characteristics (for HC221A) Output Pulse Width Characteristics (for HC221) Output Pulse Width Characteristics (for HC221A) 8/14 M54/M74HC221/221A SWITCHING CHARACTERISTICS TEST WAVEFORM TEST WAVEFORM Input Transition Time : 6ns VIH = VCC, VIL = GND. 9/14 M54/M74HC221/221A Plastic DIP16 (0.25) MECHANICAL DATA mm DIM. MIN. a1 0.51 B 0.77 TYP. inch 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 10/14 M54/M74HC221/221A Ceramic DIP16/1 MECHANICAL DATA mm DIM. MIN. TYP. inch MAX. MIN. TYP. MAX. A 20 0.787 B 7 0.276 D E 3.3 0.130 0.38 e3 0.015 17.78 0.700 F 2.29 2.79 0.090 0.110 G 0.4 0.55 0.016 0.022 H 1.17 1.52 0.046 0.060 L 0.22 0.31 0.009 0.012 M 0.51 1.27 0.020 0.050 N P Q 10.3 7.8 8.05 5.08 0.406 0.307 0.317 0.200 P053D 11/14 M54/M74HC221/221A SO16 (Narrow) MECHANICAL DATA mm DIM. MIN. TYP. A a1 inch MAX. MIN. TYP. 1.75 0.1 0.068 0.2 a2 MAX. 0.004 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 E 5.8 10 0.385 6.2 0.228 0.393 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.) P013H 12/14 M54/M74HC221/221A PLCC20 MECHANICAL DATA mm DIM. MIN. TYP. inch MAX. MIN. TYP. MAX. A 9.78 10.03 0.385 0.395 B 8.89 9.04 0.350 0.356 D 4.2 4.57 0.165 0.180 d1 2.54 0.100 d2 0.56 0.022 E 7.37 8.38 0.290 0.330 e 1.27 0.050 e3 5.08 0.200 F 0.38 0.015 G 0.101 0.004 M 1.27 0.050 M1 1.14 0.045 P027A 13/14 M54/M74HC221/221A Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsability for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may results from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use ascritical components in life support devices or systems without express written approval of SGS-THOMSON Microelectonics. 1994 SGS-THOMSON Microelectronics - All Rights Reserved SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A 14/14