Revised January 1999 MM74C221 Dual Monostable Multivibrator General Description The MM74C221 dual monostable multivibrator is a monolithic complementary MOS integrated circuit. Each multivibrator features a negative-transition-triggered input and a positive-transition-triggered input, either of which can be used as an inhibit input, and a clear input. Once fired, the output pulses are independent of further transitions of the A and B inputs and are a function of the external timing components CEXT and REXT. The pulse width is stable over a wide range of temperature and VCC. Pulse stability will be limited by the accuracy of external timing components. The pulse width is approximately defined by the relationship tW(OUT) ≈ CEXT REXT. For further information and applications, see AN-138. Features ■ Wide supply voltage range: 4.5V to 15V ■ Guaranteed noise margin: ■ High noise immunity: 1.0V 0.45 VCC (typ.) ■ Low power TTL compatibility: fan out of 2 driving 74L Ordering Code: Order Number 74MMC221N Package Number N16E Package Description 16-Lead Plastic Dual-in-Line Package (PDIP), JEDEC MS-001, 0.300” Wide Truth Table Connection Diagrams Inputs Timing Component Outputs Clear A B Q Q L X X L H X H X L H X X L H L ↑ ↓ H H L H H = HIGH Level = One HIGH level pulse L = LOW Level = One LOW level pulse ↑ = Transition from LOW-to-HIGH X= Irrelevant ↓ = Transition from HIGH-to-LOW Pin Assignments for DIP Top View © 1999 Fairchild Semiconductor Corporation DS005904.prf www.fairchildsemi.com MM74C221 Dual Monostable Multivibrator November 1987 MM74C221 Absolute Maximum Ratings(Note 1) Absolute Maximum VCC −0.3V to VCC + 0.3V Voltage at Any Pin Operating Temperature Range Storage Temperature Range Lead Temperature −40°C to +85°C (Soldering, 10 seconds) −65°C to +150°C Power Dissipation Dual-In-Line Small Outline 260°C Note 1: “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. Except for “Operating Temperature Range” they are not meant to imply that the devices should be operated at these limits. The Electrical Characteristics table provides conditions for actual device operation. 700 mW 500 mW Operating VCC Range 18V REXT ≥ 80 VCC (Ω) 4.5V to 15V DC Electrical Characteristics Max/min limits apply across temperature range, unless otherwise noted Symbol Parameter Conditions Min Typ Max Units CMOS to CMOS VIN(1) Logical “1” Input Voltage VIN(0) Logical “0” Input Voltage VOUT(1) Logical “1” Output Voltage VOUT(0) Logical “0” Output Voltage VCC = 5V 3.5 VCC = 10V 8.0 V V VCC = 5V 1.5 VCC = 10V 2.0 VCC = 5V, IO = −10 µA 4.5 VCC = 10V, IO = −10 µA 9.0 V V V V VCC = 5V, IO = +10 µA 0.5 V VCC = 10V, IO = +10 µA 1 V IIN(1) Logical “1” Input Current VCC = 15V, VIN = 15V IIN(0) Logical “0” Input Current VCC = 15V, VIN = 0V ICC Supply Current (Standby) VCC = 15V, REXT = ∞, 0.005 −1.0 1.0 −0.005 0.05 µA µA 300 µA Q1, Q2 = Logic “0” (Note 2) ICC Supply Current VCC = 15V, Q1 = Logic “1”, (During Output Pulse) Q2 = Logic “0” (Figure 4) VCC = 5V, Q1 = Logic “1”, 15 mA 2 mA Q2 = Logic “0” (Figure 4) Leakage Current at R/CEXTPin VCC = 15V, VCEXT = 5V 0.01 3.0 µA 0.8 V 0.4 V CMOS/LPTTL Interface VIN(1) Logical “1” Input Voltage V CC = 4.75V VIN(0) Logical “0” Input Voltage VCC = 4.75V VCC − 1.5 VOUT(1) Logical “1” Output Voltage V CC = 4.75V, IO = −360 µA VOUT(0) Logical “0” Output Voltage VCC = 4.75V, IO = 360 µA V 2.4 V Output Drive (See Family Characteristics Data Sheet) (Short Circuit Current) ISOURCE ISOURCE ISINK ISINK Output Source Current VCC = 5V (P-Channel) TA = 25°C, VOUT = 0V Output Source Current VCC = 10V (P-Channel) TA = 25°C, VOUT = 0V Output Sink Current VCC = 5V (N-Channel) TA = 25°C, VOUT = VCC Output Sink Current VCC = 10V (N-Channel) TA = 25°C, VOUT = VCC Note 2: In Standby (Q = Logic “0”) the power dissipated equals the leakage current plus VCC/REXT. www.fairchildsemi.com 2 −1.75 mA −8 mA 1.75 mA 8 mA (Note 3) Symbol Typ Max Units Propagation Delay from Trigger VCC = 5V 250 500 ns Input (A, B) to Output Q, Q VCC = 10V 120 250 ns Propagation Delay from Clear VCC = 5V 250 500 ns Input (CL) to Output Q, Q VCC = 10V 120 250 ns Time Prior to Trigger Input (A, B) VCC = 5V 150 50 that Clear must be Set VCC = 10V 60 20 ns tW(A, B) Trigger Input (A, B) Pulse Width VCC = 5V 150 50 ns VCC = 10V 70 30 ns tW(CL) Clear Input (CL) Pulse Width VCC = 5V 150 50 ns VCC = 10V 70 tW(OUT) Q or Q Output Pulse Width tpd A, B tpd CL tS Parameter Conditions Min VCC = 5V, REXT = 10k, ns 30 ns 900 ns 350 ns 320 ns CEXT = 0 pF VCC = 10V, REXT = 10k, CEXT = 0 pF VCC = 15V, REXT = 10k, CEXT = 0 pF VCC = 5V, REXT = 10k, 9.0 10.6 12.2 µs 9.0 10 11 µs 8.9 9.8 10.8 µs 900 1020 1200 µs 900 1000 1100 µs 900 990 1100 µs Ω CEXT = 1000 pF (Figure 1) VCC = 10V, REXT = 10k, CEXT = 1000 pF (Figure 1) VCC = 15V, REXT = 10k, CEXT = 1000 pF (Figure 1) VCC = 5V, REXT = 10k, CEXT = 0.1 µF (Figure 3) VCC = 10V, REXT = 10k, CEXT = 0.1 µF (Figure 3) VCC = 15V, REXT = 10k, CEXT = 0.1 µF (Figure 3) RON ON Resistance of Transistor VCC = 5V (Note 4) 50 150 between R/C EXT to CEXT VCC = 10V (Note 4) 25 65 Ω VCC = 15V (Note 4) 16.7 45 Ω Output Duty Cycle R = 10k, C = 1000 pF 90 % R = 10k, C = 0.1 µF 90 % 25 pF (Note 5) CIN Input Capacitance R/CEXT Input (Note 6) 15 Any Other Input (Note 6) 5 pF Note 3: AC Parameters are guaranteed by DC correlated testing. Note 4: See AN-138 for detailed explanation RON. Note 5: Maximum output duty cycle = REXT/REXT + 1000. Note 6: Capacitance is guaranteed by periodic testing. 3 www.fairchildsemi.com MM74C221 AC Electrical Characteristics TA = 25°C, CL = 50 pF, unless otherwise noted MM74C221 Typical Performance Characteristics 0% Point pulse width: 0% Point pulse width: At VCC = 5V, At VCC = 5V, TW = 10.6 µs At VCC = 10V,TW = 10 µs TW = 1020 µs At VCC = 10V,TW = 1000 µs At VCC = 15V,TW = 9.8 µs At VCC = 15V,TW = 982 µs Percentage of units within +4%: Percentage of units within +4%: At VCC = 5V,90% of units At VCC = 5V,95% of units At VCC = 10V,95% of units At VCC = 10V,97% of units At VCC = 15V,98% of units At VCC = 15V,98% of units FIGURE 1. Typical Distribution of Units for Output Pulse Width FIGURE 3. Typical Distribution of Units for Output Pulse Width FIGURE 2. Typical Variation in Output Pulse Width vs Temperature FIGURE 4. Typical Power Dissipation per Package www.fairchildsemi.com 4 MM74C221 Typical Performance Characteristics Switching Time Waveforms (Continued) tr = tf = 20 ns 5 www.fairchildsemi.com MM74C221 Dual Monostable Multivibrator Physical Dimensions inches (millimeters) unless otherwise noted 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide Package Number N16E LIFE SUPPORT POLICY FAIRCHILD’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 FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 2. A critical component in any component of a life support 1. Life support devices or systems are devices or systems device or system whose failure to perform can be reawhich, (a) are intended for surgical implant into the sonably expected to cause the failure of the life support body, or (b) support or sustain life, and (c) whose failure device or system, or to affect its safety or effectiveness. to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the www.fairchildsemi.com user. Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right at any time without notice to change said circuitry and specifications.