General Description Features September 1983 The MM74HC123A high speed monostable multivibrators ■ Typical propagation delay: 25 ns Revised May 2001 (one shots) utilize advanced silicon-gate CMOS technol■ Wide power supply range: 2V–6V © 2013 Rochester Electronics, ogy. They feature speeds comparable to low power Schot- LLC. All Rights Reserved 04242013 ■ Low quiescent current: 80 µA maximum (74HC Series) tky TTL circuitry while retaining the low power and high ■ Low input current: 1 µA maximum noise immunity characteristic of CMOS circuits. 123A DualMM74HC123A RetriggerableDual Monostable Retriggerable Multivibrator Monostable Multivibrator MM74HC123A Dual Retriggerable Monostable Multivibrator 74HC123A ■ Fanout of 10 LS-TTL loads MM74HC123A ■ Simple pulse width formula T = RC Dual Retriggerable Monostable Multivibrator ■ Wide pulse range: 400 ns to ∞ (typ) Each multivibrator features both a negative, A, and a positive, B, transition triggered input, either of which can be used as an inhibit input. Also included is a clear input that when taken low resets the one shot. The MM74HC123A can be triggered on the positive transition of the clear while General Description A is held LOW and B is held HIGH. The MM74HC123A high speed monostable The MM74HC123A is retriggerable. That is itmultivibrators may be trig(one shots) utilizewhile advanced silicon-gate CMOS technolgered repeatedly their outputs are generating a pulse ogy. They feature speeds comparable to low power Schotand the pulse will be extended. tky TTL circuitry while retaining the low power and high Pulse width stability over a wide range circuits. of temperature and noise immunity characteristic of CMOS supply is achieved using linear CMOS techniques. The outEach multivibrator both A, and); awhere posiput pulse equationfeatures is simply: PWa negative, = (REXT) (C EXT tive, B, transition triggered input, either of which can be PW is in seconds, R is in ohms, and C is in farads. All used as an inhibit input. Also included is a clear input that inputs are protected from damage due to static discharge when taken low resets the one shot. The MM74HC123A by diodes to VCC and ground. can be triggered on the positive transition of the clear while A is held LOW and B is held HIGH. ■ Part to part variation: ±5% (typ) Features ■ Schmitt Trigger A & B inputs allow rise and fall times to as slow as one second ■ be Typical propagation delay: 25 ns ■ Wide power supply range: 2V–6V ■ Low quiescent current: 80 µA maximum (74HC Series) ■ Low input current: 1 µA maximum ■ Fanout of 10 LS-TTL loads ■ Simple pulse width formula T = RC ■ Wide pulse range: 400 ns to ∞ (typ) ■ Part to part variation: ±5% (typ) ■ Schmitt Trigger A & B inputs allow rise and fall times to be as slow as one second The MM74HC123A is retriggerable. That is it may be trigOrdering gered repeatedlyCode: while their outputs are generating a pulse and the pulse will be extended. Orderwidth Number Number Package Description Pulse stability Package over a wide range of temperature and MM74HC123AM M16A 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow supply is achieved using linear CMOS techniques. The output pulse equation is simply: PW = (REXT ) (CEXT ); where MM74HC123ASJ M16D 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide PW is in seconds, R is in ohms, and 16-Lead C is in farads. All Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide MM74HC123AMTC MTC16 Thin Shrink inputs are protected from damage due to static discharge MM74HC123AN N16E 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide by diodes to VCC and ground. Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Connection Diagram Ordering Code: Order Number MM74HC123AM MM74HC123ASJ MM74HC123AMTC MM74HC123AN Timing Component Package Number Package Description M16A 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow M16D 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide MTC16 N16E 16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Note: Pin 6 and Pin 14 must be hard-wired to GND. Connection Diagram Timing Component Top View Rochester Ordering Guide Note: Pin 6 and Pin 14 must be hard-wired to GND. *Most products can also be offered as RoHS compliant, designated by a –G suffix. Please contact factory for more information. © 2001 Fairchild Semiconductor Corporation DS005206 www.fairchildsemi.com Package Temperature MM74HC123AN Rochester Part Number MM74HC123AN PDIP-16 -40° to +85°C MM74HC123AM MM74HC123AM SOP-16, Plastic -40° to +85°C TSSOP-16, Plastic -40° to +85°C SOP-16, Plastic -40° to +85°C MM74HC123AMTC MM74HC123ASJ Top View Fairchild Part Number MM74HC123AMTC MM74HC123ASJ Please contact factory for specific package availability and Military/Aerospace © 2001 Fairchild Semiconductor Corporation DS005206 specifications/availability. www.fairchildsemi.com Rochester Electronics guarantees performance of its semiconductor products to the original OEM specifications. “Typical” values are for reference purposes only. Certain minimum or maximum ratings may be based on product characterization, design, simulation, or sample testing. Rochester Electronics reserves the right to make changes without further notice to any specification herein. Specification Number 74HC123-I (F) Rev C Page 1 of 4 MM74HC123A 74HC123A Truth Table Inputs H L ↑ ↓ Outputs Clear A B Q Q L X X L H X H X L H X X L L H H L ↑ H ↓ H ↑ L H = = = = HIGH Level LOW Level Transition from LOW-to-HIGH Transition from HIGH-to-LOW = One HIGH Level Pulse = One LOW Level Pulse X = Irrelevant Logic Diagram www.fairchildsemi.com Specification Number 74HC123-I (F) Rev C 2 Page 2 of 4 74HC123A Recommended Operating Conditions (Note 2) −0.5V to +7.0V Supply Voltage (VCC) DC Input Voltage (VIN) −1.5V to VCC +1.5V DC Output Voltage (VOUT) −0.5V to VCC +0.5V Clamp Diode Current (IIK, IOK) ±20 mA DC Output Current, per pin (IOUT) ±25 mA DC VCC or GND Current, per pin (ICC) ±50 mA Storage Temperature Range (TSTG) S.O. Package only 500 mW V DC Input or Output Voltage 0 VCC V −40 +85 °C VCC = 2.0V 1000 ns VCC = 4.5V 500 ns VCC = 6.0V 400 ns Operating Temperature Range (TA) (Clear Input) (tr, tf) Lead Temperature (TL) Note 1: Maximum Ratings are those values beyond which damage to the device may occur. 260°C (Soldering 10 seconds) Units 6 Input Rise or Fall Times −65°C to +150°C 600 mW Max 2 (VIN, VOUT) Power Dissipation (PD) (Note 3) Min Supply Voltage (VCC) MM74HC123A Absolute Maximum Ratings(Note 1) Note 2: Unless otherwise specified all voltages are referenced to ground. Note 3: Power Dissipation Temperature Derating: Plastic “N” Package: − 12mW/°C from 65°C to 85°C DC Electrical Characteristics Symbol VIH VIL VOH Parameter Conditions (Note 4) TA = 25°C VCC Typ TA = −40 to 85°C TA = −55 to 125°C Guaranteed Limits Minimum HIGH Level Input 2.0V 1.5 1.5 1.5 Voltage 4.5V 3.15 3.15 3.15 V 6.0V 4.2 4.2 4.2 V Maximum LOW Level Input 2.0V 0.3 0.3 0.3 V Voltage 4.5V 0.9 0.9 0.9 V 6.0V 1.2 1.2 1.2 V Minimum HIGH Level VIN = VIH or VIL Output Voltage |IOUT| ≤ 20 µA 2.0V 2.0 1.9 1.9 1.9 V 4.5 4.4 4.4 4.4 V 6.0V 6.0 5.9 5.9 5.9 V V |IOUT| ≤ 4.0 mA 4.5V 4.2 3.98 3.84 3.7 V |IOUT| ≤ 5.2 mA 6.0V 5.7 5.48 5.34 5.2 V Maximum LOW Level VIN = VIH or VIL Output Voltage |IOUT| ≤ 20 µA 2.0V 0 0.1 0.1 0.1 V 4.5V 0 0.1 0.1 0.1 V 6.0V 0 0.1 0.1 0.1 V |IOUT| ≤ 4 mA 4.5V 0.2 0.26 0.33 0.4 |IOUT| ≤ 5.2 mA 6.0V 0.2 0.26 0.33 0.4 V VIN = VCC or GND 6.0V ±0.5 ±5.0 ±5.0 µA VIN = VCC or GND 6.0V ±0.1 ±1.0 ±1.0 µA Maximum Quiescent Supply VIN = VCC or GND 6.0V 8.0 80 160 µA VIN = VIH or VIL IIN V 4.5V VIN = VIH or VIL VOL Units Maximum Input Current V V (Pins 7, 15) IIN Maximum Input Current (all other pins) ICC Current (standby) ICC IOUT = 0 µA Maximum Active Supply VIN= VCC or GND 2.0V 36 80 110 130 µA Current (per R/CEXT = 0.5VCC 4.5V 0.33 1.0 1.3 1.6 mA 6.0V 0.7 2.0 2.6 3.2 mA monostable) Note 4: For a power supply of 5V ±10% the worst-case output voltages (VOH, VOL) occur for HC at 4.5V. Thus the 4.5V values should be used when designing with this supply. Worst-case VIH and VIL occur at VCC = 5.5V and 4.5V respectively. (The VIH value at 5.5V is 3.85V.) The worst-case leakage current (IIN, ICC, and IOZ) occur for CMOS at the higher voltage and so the 6.0V values should be used. 3 Specification Number 74HC123-I (F) Rev C www.fairchildsemi.com Page 3 of 4 MM74HC123A 74HC123A AC Electrical Characteristics VCC = 5V, TA = 25°C, CL = 15 pF, tr = tf = 6 ns Symbol Parameter tPLH Conditions Maximum Trigger Propagation Delay Typ Limit Units 22 33 ns 25 42 ns ns A, B or Clear to Q tPHL Maximum Trigger Propagation Delay A, B or Clear to Q tPHL Maximum Propagation Delay, Clear to Q 20 27 tPLH Maximum Propagation Delay, Clear to Q 22 33 ns tW Minimum Pulse Width, A, B or Clear 14 26 ns tREM Minimum Clear Removal Time tWQ(MIN) Minimum Output Pulse Width CEXT = 28 pF tWQ Output Pulse Width CEXT = 1000 pF 0 ns 400 ns 10 µs REXT = 2 kΩ REXT = 10 kΩ AC Electrical Characteristics CL = 50 pF tr = tf = 6 ns (unless otherwise specified) Symbol tPLH tPHL tPHL Parameter VCC Conditions tW tREM Guaranteed Limits Units Maximum Trigger Propagation 2.0V 77 169 194 210 4.5V 26 42 51 57 ns 6.0V 21 32 39 44 ns Maximum Trigger Propagation 2.0V 88 197 229 250 ns Delay, A, B or Clear to Q 4.5V 29 48 60 67 ns 6.0V 24 38 46 51 ns 2.0V 54 114 132 143 ns Maximum Propagation Delay ns 4.5V 23 34 41 45 ns 6.0V 19 28 33 36 ns Maximum Propagation Delay 2.0V 56 116 135 147 ns Clear to Q 4.5V 25 36 42 46 ns 6.0V 20 29 34 37 ns Minimum Pulse Width 2.0V 57 123 144 157 ns A, B, Clear 4.5V 17 30 37 42 ns 6.0V 12 21 27 30 ns 0 0 0 ns ns Minimum Clear 2.0V Removal Time 4.5V 0 0 0 6.0V 0 0 0 ns tTLH, tTHL Maximum Output Rise and Fall Time tWQ(MIN) TA = −40 to 85°C TA = −55 to 125°C Delay, A, B or Clear to Q Clear to Q tPLH TA = 25°C Typ 2.0V 30 75 95 110 ns 4.5V 8 15 19 22 ns 6.0V 7 13 16 19 ns Minimum Output CEXT = 28 pF 2.0V 1.5 µs Pulse Width REXT = 2 kΩ 4.5V 450 ns REXT = 6 kΩ (VCC = 2V) 6.0V 380 CEXT = 0.1 µF Min 5.0V 1 0.9 0.86 0.85 ms REXT = 10 kΩ Max 5.0V tWQ Output Pulse Width CIN Maximum Input ns 1 1.1 1.14 1.15 ms 12 20 20 20 pF 6 10 10 10 pF Capacitance (Pins 7 & 15) CIN Maximum Input Capacitance (other inputs) CPD Power Dissipation (Note 5) 70 pF Capacitance Note 5: CPD determines the no load dynamic power consumption, PD = CPD VCC2 f + ICC V CC, and the no load dynamic current consumption, IS = CPD VCC f + I CC. Rochester Electronics guarantees performance of its semiconductor products to the original OEM specifications. “Typical” values are for reference purposes www.fairchildsemi.com 4 only. Certain minimum or maximum ratings may be based on product characterization, design, simulation, or sample testing. Rochester Electronics reserves the right to make changes without further notice to any specification herein. Specification Number 74HC123-I (F) Rev C Page 4 of 4