74LV123 PHILIPS | Alldatasheet
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/C0109 /C0110 /C0114 74LV123 Dual retriggerable monostable multivibrator with reset Product specification Supersedes data of 1997 Feb 04 IC24 Data Handbook
1998 Apr 20
Philips Semiconductors Product specification 74LV123Dual retriggerable monostable multivibrator with reset
21998 Apr 28 853–1911 19290
FEATURES
- Optimized for Low Voltage applications: 1.0 to 5.5V
- Accepts TTL input levels between VCC = 2.7V and VCC = 3.6V
- Typical VOLP (output ground bounce) 0.8V @ VCC = 3.3V, Tamb = 25°C
- Typical VOHV (output VOH undershoot) 2V @ VCC = 3.3V, Tamb = 25°C
- DC triggered from active HIGH or active LOW inputs
- Retriggerable for very long pulses up to 100% duty factor
- Direct reset terminates output pulses
- Schmitt-trigger action on all inputs except for the reset input
- Output capability: standard (except for nREXT /CEXT )
- ICC category: MSI
DESCRIPTION
The 74LV123 is a low-voltage Si-gate CMOS device and is pin and function compatible with the 74HC/HCT123. The 74LV123 is a dual retriggerable monostable multivibrator with output pulse width control by three methods. The basic pulse time is programmed by selection of an external resistor (REXT ) and capacitor (CEXT ). They are normally connected as shown in Figure 1. Once triggered, the basic output pulse width may be
- CPD is used to determine the dynamic power dissipation (PD in µW)
(CL VCC 2 fo) = sum of the outputs.
ORDERING INFORMATION
PACKAGES TEMPERATURE RANGE OUTSIDE NORTH AMERICA NORTH AMERICA PKG. DWG. # 16-Pin Plastic DIL –40°C to +125°C 74LV123 N 74LV123 N SOT38-1 16-Pin Plastic SO –40°C to +125°C 74LV123 D 74LV123 D SOT109-1 16-Pin Plastic SSOP Type II –40°C to +125°C 74LV123 DB 74LV123 DB SOT338-1 16-Pin Plastic TSSOP Type I –40°C to +125°C 74LV123 PW 74LV123PW DH SOT403-1
Philips Semiconductors Product specification 74LV123Dual retriggerable monostable multivibrator with reset
1998 Apr 28 3
1,9 1A, 2A Trigger inputs (negative-edge triggered) 2,10 1B, 2B Trigger inputs (positive-edge triggered) 3,11 1R D , 2RD Direct reset LOW and trigger action at positive edge 4, 12 1Q , 2Q Outputs (active LOW) 7 2R EXT /CEXT External resistor/capacitor connection
8 GND Ground (0V)
13, 5 1Q, 2Q Outputs (active HIGH) 14, 6 1C EXT, 2C EXT External capacitor connection 15 1R EXT /CEXT External resistor/capacitor connection
16 VCC Positive supply voltage
LOGIC SYMBOL (IEEE/IEC) CX RCX R CX RCX R SV00098 LOGIC SYMBOL 1R D 2R D 1C EXT 2C EXT 1R EXT /CEXT 2R EXT /CEXT S Q Q R D T SV00097 FUNCTIONAL DIAGRAM 1R D 2R D 1C EXT 2C EXT 1R EXT /CEXT 2R EXT /CEXT S Q Q R D T SV00099
Philips Semiconductors Product specification 74LV123Dual retriggerable monostable multivibrator with reset
1998 Apr 28 4
R nR EXT /CEXT VCC Q Q R D RR CL CL VCC CL CLCL R A B SV00100 VCC It is recommended that Pin 6 (2CEXT ) and Pin 14 (1CEXT ) by externally grounded to Pin 8 (GND) FUNCTION TABLE INPUTS OUTPUTS nR D nA nB nQ nQ L X X L H X H X L * H * X X L L * H * H L ↑ H ↓ H ↑ L H NOTES: * If the monostable was triggered before this condition was established, the pulse will continue as programmed. H = HIGH voltage level L = LOW voltage level X = don’t care ↑ = LOW-to-HIGH transition ↓ = HIGH-to-LOW transition = one HIGH level output pulse = one LOW level output pulse VCC R EXT C EXT to nCEXT (pin 14 or 6) to nREXT /CEXT (pin 15 or 7) SV00101 Figure 1.Timing component connection
Philips Semiconductors Product specification 74LV123Dual retriggerable monostable multivibrator with reset
1998 Apr 28 5
RECOMMENDED OPERATING CONDITIONS SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNIT VCC DC supply voltage See Note1 1.0 3.3 5.5 V VI Input voltage 0 – VCC V VO Output voltage 0 – VCC V Tamb Operating ambient temperature range in free air See DC and AC characteristics –40 –40 +85 +125 °C tr, tf Input rise and fall times except for Schmitt-trigger inputs VCC = 1.0V to 2.0V VCC = 2.0V to 2.7V VCC = 2.7V to 3.6V VCC = 3.6V to 5.5V 500 200 100 ns/V NOTE: ABSOLUTE MAXIMUM RATINGS 1, 2 In accordance with the Absolute Maximum Rating System (IEC 134). Voltages are referenced to GND (ground = 0V). SYMBOL PARAMETER CONDITIONS RATING UNIT VCC DC supply voltage –0.5 to +7.0 V /C0034IIK DC input diode current VI < –0.5 or VI > VCC + 0.5V 20 mA /C0034IOK DC output diode current VO < –0.5 or VO > VCC + 0.5V 50 mA /C0034IO DC output source or sink current – standard outputs –0.5V < VO < VCC + 0.5V 25 mA /C0034IGND , /C0034ICC DC V CC or GND current for types with – standard outputs 50 mA Tstg Storage temperature range –65 to +150 °C PTOT Power dissipation per package – plastic DIL – plastic mini-pack (SO) – plastic shrink mini-pack (SSOP and TSSOP) for temperature range: –40 to +125°C above +70°C derate linearly with 12 mW/K above +70°C derate linearly with 8 mW/K above +60°C derate linearly with 5.5 mW/K 750 500 500 mW NOTES: 1. Stresses beyond those listed may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. 2. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
Philips Semiconductors Product specification 74LV123Dual retriggerable monostable multivibrator with reset
1998 Apr 28 6
DC ELECTRICAL CHARACTERISTICS Over recommended operating conditions. Voltages are referenced to GND (ground = 0V). LIMITS SYMBOL PARAMETER TEST CONDITIONS -40°C to +85°C -40°C to +125°C UNIT MIN TYP 1 MAX MIN MAX VCC = 1.2V 0.9 0.9 V HIGH level Input VCC = 2.0V 1.4 1.4 VVIH voltage VCC = 2.7 to 3.6V 2.0 2.0 V VCC = 4.5 to 5.5V 0.7/C0060VCC 0.7/C0060VCC VCC = 1.2V 0.3 0.3 V LOW level Input VCC = 2.0V 0.6 0.6 VVIL voltage VCC = 2.7 to 3.6V 0.8 0.8 V VCC = 4.5 to 5.5 0.3/C0060VCC 0.3/C0060VCC VCC = 1.2V; VI = VIH or VIL; –IO = 100µA 1.2 HIGH l l t t VCC = 2.0V; VI = VIH or VIL; –IO = 100µA 1.8 2.0 1.8 VOH HIGH level output voltage;all outputs VCC = 2.7V; VI = VIH or VIL; –IO = 100µA 2.5 2.7 2.5 Vvoltage all out uts VCC = 3.0V; VI = VIH or VIL; –IO = 100µA 2.8 3.0 2.8 VCC = 4.5V; VI = VIH or VIL; –IO = 100µA 4.3 4.5 4.3 VO HIGH level output voltage; VCC = 3.0V; VI = VIH or VIL; –IO = 6mA 2.40 2.82 2.20 VVOH g STANDARD outputs VCC = 4.5V; VI = VIH or VIL; –IO = 12mA 3.60 4.20 3.50 V VCC = 1.2V; VI = VIH or VIL; IO = 100µA 0 LOW l l t t VCC = 2.0V; VI = VIH or VIL; IO = 100µA 0 0.2 0.2 VOL LOW level output voltage;all outputs VCC = 2.7V; VI = VIH or VIL; IO = 100µA 0 0.2 0.2 Vvoltage all out uts VCC = 3.0V; VI = VIH or VIL; IO = 100µA 0 0.2 0.2 VCC = 4.5V; VI = VIH or VIL; IO = 100µA 0 0.2 0.2 VO LOW level output voltage; VCC = 3.0V; VI = VIH or VIL; IO = 6mA 0.25 0.40 0.50 VVOL g STANDARD outputs VCC = 4.5V; VI = VIH or VIL; IO = 12mA 0.35 0.55 0.65 V II Input leakage current VCC = 5.5V; VI = VCC or GND 1.0 1.0 µA ICC Quiescent supply current; MSI VCC = 5.5V; VI = VCC or GND; IO = 0 20.0 160 µA ΔICC Additional quiescent supply current VCC = 2.7V to 3.6V; VI = VCC – 0.6V 500 850 µA NOTES: 1. All typical values are measured at Tamb = 25°C.
Philips Semiconductors Product specification 74LV123Dual retriggerable monostable multivibrator with reset
1998 Apr 28 7
GND = 0V; tr = tf ≤ 2.5ns; CL = 50pF; RL =1 KΩ CONDITION LIMITS SYMBOL PARAMETER WAVEFORM CONDITION –40 to +85°C –40 to +125°C UNIT VCC (V) MIN TYP 1 MAX MIN MAX 1.2 120 Propagation delay Figure 3 2.0 40 76 92 tPHL Propagation delay nR D ,n A, nB, to nQ Figure 3 C EXT = 0pF R 5KΩ 2.7 30 56 68 nsnR D , nA, nB, to nQ R EXT = 5KΩ 3.0 to 3.6 252 48 57 4.5 to 5.5 182 40 46 1.2 120 Propagation delay Figure 3 2.0 40 76 92 tPLH Propagation delay nR D ,n A, nB, to nQ Figure 3 C EXT = 0pF R 5KΩ 2.7 30 56 68 nsnR D , nA, nB, to nQ R EXT = 5KΩ 3.0 to 3.6 252 48 57 4.5 to 5.5 182 40 46 1.2 100 Propagation delay Figure 3 2.0 30 57 68 tPHL Propagation delay nR D to nQ (reset) Figure 3 C EXT = 0pF R 5KΩ 2.7 23 43 51 nsnR D to nQ (reset) R EXT = 5KΩ 3.0 to 3.6 202 38 45 4.5 to 5.5 142 31 36 1.2 100 Propagation delay Figure 3 2.0 30 57 68 tPLH Propagation delay nR D to nQ (reset) Figure 3 C EXT = 0pF R 5KΩ 2.7 23 43 51 nsnR D to nQ (reset) R EXT = 5KΩ 3.0 to 3.6 202 38 45 4.5 to 5.5 142 31 36 2.0 30 5 40 tW Trigger pulse width Figure 3 2.7 25 3.5 30 nstW gg nA = LOW Figure 3 3.0 to 3.6 20 3.02 25 ns 4.5 to 5.5 15 2.52 20 2.0 30 13 40 tW Trigger pulse width Figure 3 2.7 25 8 30 nstW gg nB = HIGH Figure 3 3.0 to 3.6 20 72 25 ns 4.5 to 5.5 15 52 20 2.0 35 6 45 tW Reset pulse width Figure 2 2.7 30 5 40 nstW nR D = LOW Figure 2 3.0 to 3.6 25 42 30 ns 4.5 to 5.5 20 32 25 2.0 470 tW Output pulse width nQ = HIGH Figures 1, 2 C EXT = 100nF 2.7 460 µstW nQ = HIGH nQ = LOW C EXT = 100nF R EXT = 10KΩ 3.0 to 3.6 4502 µs Q EXT 4.5 to 5.5 4302 2.0 100 tW Output pulse width nQ = HIGH Figures 1, 2 C EXT =0 pF 2.7 90 nstW nQ = HIGH nQ = LOW C EXT = 0F R EXT = 5KΩ 3.0 to 3.6 802 ns Q EXT 4.5 to 5.5 702 2.0 70 tt Retrigger time Figure 1 C EXT =0 pF 2.7 55 nstrt gg nA, nB C EXT = 0F R EXT = 5KΩ 3.0 to 3.6 452 ns EXT 4.5 to 5.5 402
Philips Semiconductors Product specification 74LV123Dual retriggerable monostable multivibrator with reset
1998 Apr 28 8
AC CHARACTERISTICS (Continued) GND = 0V; tr = tf ≤ 2.5ns; CL = 50pF; RL =1 KΩ CONDITION LIMITS SYMBOL PARAMETER WAVEFORM CONDITION –40 to +85°C –40 to +125°C UNIT VCC (V) MIN TYP MAX MIN MAX 1.2 10 1000 External timing 2.0 5 1000 R EXT External tim ing resistor Figure 5 2.7 3 1000 ΚΩresistor 3.0 to 3.6 2 1000 4.5 to 5.5 2 1000 1.2 External timing 3 2.0 C EXT External tim ing capacitor Figure 53 2.7 No limits pFca acitor 3.0 to 3.6 4.5 to 5.5 NOTES: 1. Unless otherwise stated, all typical values are at Tamb = 25°C. 2. Typical value measured at VCC = 3.3V. 3. Typical value measured at VCC = 5.0V. 4. For other REXT and CEXT combinations see Figure 5. if CEXT > 10 nF, the next formula is valid: tW = K x REXT x CEXT (typ.) where, tW = output pulse width in ns; R EXT = external resistor in KΩ ; CEXT = external capacitor in pF; The inherent test jig and pin capacitance at pins 15 and 7 (nREXT /CEXT ) is approximately 7 pF. 5. The time to retrigger the monostable multivibrator depends on the values of REXT and CEXT . The output pulse width will only be extended when the time between the active-going edges of the trigger pulses meets the minimum retrigger time. If CEXT > 10 pF, the next formula (at VCC = 5.0V) for the set-up time of a retrigger pulse is valid: trt = 30 + 0.19R x C-9 + 13 x R1.05 (typ.) where, trt = retrigger time in ns; C EXT = external capacitor in pF; R EXT = external resistor in KΩ . The inherent test jig and pin capacitance at pins 15 and 7 (nREXT /CEXT ) is approximately 7 pF. 6. When the device is powered up, initiate the device via a reset pulse, when CEXT < 50pF. AC WAVEFORMS VM = 1.5V at VCC /C0119 2.7V; VM = 0.5 VCC at VCC /C0116 2.7V; VOL and VOH are the typical output voltage drop that occur with the output load. tW tW trt tW tW tW nB INPUT nA INPUT nQ OUTPUT SV00139 Figure 1.Output pulse control using retrigger pulse; nR D = HIGH. tW tWtW nB INPUT nR D INPUT nQ OUTPUT SV00140 Figure 2.Output pulse control using reset input nRD ; nA = LOW.
1998 Apr 28 9
Figure 3. Input (nA, nB, nRD ) to output (nQ, nQ) propagation delays, the output transition times, and the input and output pulse widths.
Philips Semiconductors Product specification 74LV123Dual retriggerable monostable multivibrator with reset
1998 Apr 28 10
0.8 0.4 024 VCC (V) ‘K’ factor SV00185 1 3 65 Figure 4. HCT typical “k” factor as a function of VCC ; external capacitor values at VCC = 3.3V and Tamb = 25°C.
APPLICATION INFORMATION
When the monostable is powered-up it may produce an output pulse, with a pulse width defined by the values of RX and CX. This output pulse can be eliminated using the circuit shown in Figure 6. SV00152 R X VCC A B C X Q Q RESET V CC nC EXT nR EXT /CEXT “123” Figure 6. Power-up output pulse elimination circuit surges as shown in Figure 7. Figure 7. Power-down protection circuit
1998 Apr 28 11
R T = Termination resistance should be equal to ZOUT of pulse generators. Figure 8. Load circuitry for switching times
Philips Semiconductors Product specification 74LV123Dual retriggerable monostable multivibrator with reset
1998 Apr 28 12
DIP16: plastic dual in-line package; 16 leads (300 mil); long body SOT38-1
Philips Semiconductors Product specification 74LV123Dual retriggerable monostable multivibrator with reset
1998 Apr 28 13
SO16: plastic small outline package; 16 leads; body width 3.9 mm SOT109-1
Philips Semiconductors Product specification 74LV123Dual retriggerable monostable multivibrator with reset
1998 Apr 28 14
SSOP16: plastic shrink small outline package; 16 leads; body width 5.3 mm SOT338-1
Philips Semiconductors Product specification 74LV123Dual retriggerable monostable multivibrator with reset
1998 Apr 28 15
TSSOP16: plastic thin shrink small outline package; 16 leads; body width 4.4 mm SOT403-1
Philips Semiconductors Product specification 74LV123Dual retriggerable monostable multivibrator with reset
1998 Apr 28 16
Philips Semiconductors and Philips Electronics North America Corporation reserve the right to make changes, without notice, in the products, including circuits, standard cells, and/or software, described or contained herein in order to improve design and/or performance. Philips Semiconductors assumes no responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright, or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless otherwise specified. Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification. LIFE SUPPORT APPLICATIONS Philips Semiconductors and Philips Electronics North America Corporation Products are not designed for use in life support appliances, devices, or systems where malfunction of a Philips Semiconductors and Philips Electronics North America Corporation Product can reasonably be expected to result in a personal injury. Philips Semiconductors and Philips Electronics North America Corporation customers using or selling Philips Semiconductors and Philips Electronics North America Corporation Products for use in such applications do so at their own risk and agree to fully indemnify Philips Semiconductors and Philips Electronics North America Corporation for any damages resulting from such improper use or sale. This data sheet contains preliminary data, and supplementary data will be published at a later date. Philips Semiconductors reserves the right to make changes at any time without notice in order to improve design and supply the best possible product. Philips Semiconductors
811 East Arques Avenue
P.O. Box 3409 Sunnyvale, California 94088–3409 Telephone 800-234-7381 DEFINITIONS Data Sheet Identification Product Status Definition Objective Specification Preliminary Specification Product Specification Formative or in Design Preproduction Product Full Production This data sheet contains the design target or goal specifications for product development. Specifications may change in any manner without notice. This data sheet contains Final Specifications. Philips Semiconductors reserves the right to make changes at any time without notice, in order to improve design and supply the best possible product. Copyright Philips Electronics North America Corporation 1998 All rights reserved. Printed in U.S.A. print code Date of release: 05-96 Document order number: 9397-750-04418 /C0109 /C0110 /C0114