MC14541B Programmable Timer The MC14541B programmable timer consists of a 16−stage binary counter, an integrated oscillator for use with an external capacitor and two resistors, an automatic power−on reset circuit, and output control logic. Timing is initialized by turning on power, whereupon the power−on reset is enabled and initializes the counter, within the specified VDD range. With the power already on, an external reset pulse can be applied. Upon release of the initial reset command, the oscillator will oscillate with a frequency determined by the external RC network. The 16−stage counter divides the oscillator frequency (fosc) with the nth stage frequency being fosc/2n. Features http://onsemi.com SOIC−14 D SUFFIX CASE 751A • Available Outputs 28, 210, 213 or 216 • Increments on Positive Edge Clock Transitions • Built−in Low Power RC Oscillator (±2% accuracy over temperature • • • • • • • • • • range and ±20% supply and ±3% over processing at < 10 kHz) Oscillator May Be Bypassed if External Clock Is Available (Apply external clock to Pin 3) External Master Reset Totally Independent of Automatic Reset Operation Operates as 2n Frequency Divider or Single Transition Timer Q/Q Select Provides Output Logic Level Flexibility Reset (auto or master) Disables Oscillator During Resetting to Provide No Active Power Dissipation Clock Conditioning Circuit Permits Operation with Very Slow Clock Rise and Fall Times Automatic Reset Initializes All Counters On Power Up Supply Voltage Range = 3.0 Vdc to 18 Vdc with Auto Reset Supply Voltage Range = Disabled (Pin 5 = VDD) Supply Voltage Range = 8.5 Vdc to 18 Vdc with Auto Reset Supply Voltage Range = Enabled (Pin 5 = VSS) NLV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC−Q100 Qualified and PPAP Capable These Devices are Pb−Free and are RoHS Compliant TSSOP−14 DT SUFFIX CASE 948G SOEIAJ−14 F SUFFIX CASE 965 PIN ASSIGNMENT Rtc 1 14 VDD Ctc 2 13 B RS 3 12 A NC 4 11 NC MODE AR 5 10 MR 6 9 Q/Q SEL VSS 7 8 Q NC = NO CONNECTION MARKING DIAGRAMS 14 14 14541BG AWLYWW MC14541B ALYWG 1 1 SOIC−14 SOEIAJ−14 14 14 541B ALYWG G 1 TSSOP−14 A WL, L YY, Y WW, W G or G = Assembly Location = Wafer Lot = Year = Work Week = Pb−Free Package (Note: Microdot may be in either location) ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 2 of this data sheet. © Semiconductor Components Industries, LLC, 2014 July, 2014 − Rev. 14 1 Publication Order Number: MC14541B/D MC14541B MAXIMUM RATINGS (Voltages Referenced to VSS) Symbol VDD Vin, Vout Parameter DC Supply Voltage Range Input or Output Voltage Range, (DC or Transient) Value Unit −0.5 to +18.0 V −0.5 to VDD + 0.5 V Iin Input Current (DC or Transient) ±10 (per Pin) mA Iout Output Current (DC or Transient) ±45 (per Pin) mA PD Power Dissipation, per Package (Note 1) 500 mW TA Ambient Temperature Range −55 to +125 °C Tstg Storage Temperature Range −65 to +150 °C TL Lead Temperature, (8−Second Soldering) 260 °C Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected. 1. Temperature Derating: “D/DW” Packages: –7.0 mW/_C From 65_C To 125_C ORDERING INFORMATION Package Shipping† MC14541BDG SOIC−14 (Pb−Free) 55 Units / Rail NLV14541BDG* SOIC−14 (Pb−Free) 55 Units / Rail MC14541BDR2G SOIC−14 (Pb−Free) 2500 / Tape & Reel NLV14541BDR2G* SOIC−14 (Pb−Free) 2500 / Tape & Reel MC14541BDTR2G TSSOP−14 (Pb−Free) 2500 / Tape & Reel NLV14541BDTR2G* TSSOP−14 (Pb−Free) 2500 / Tape & Reel MC14541BFELG SOEIAJ−14 (Pb−Free) 2000 / Tape & Reel Device †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. *NLV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC−Q100 Qualified and PPAP Capable. http://onsemi.com 2 MC14541B ELECTRICAL CHARACTERISTICS (Voltages Referenced to VSS) Characteristic Output Voltage Vin = VDD or 0 Symbol VDD Vdc − 55_C 25_C 125_C Min Max Min Typ (Note 2) Max Min Max Unit “0” Level VOL 5.0 10 15 − − − 0.05 0.05 0.05 − − − 0 0 0 0.05 0.05 0.05 − − − 0.05 0.05 0.05 Vdc “1” Level VOH 5.0 10 15 4.95 9.95 14.95 − − − 4.95 9.95 14.95 5.0 10 15 − − − 4.95 9.95 14.95 − − − Vdc “0” Level VIL 5.0 10 15 − − − 1.5 3.0 4.0 − − − 2.25 4.50 6.75 1.5 3.0 4.0 − − − 1.5 3.0 4.0 5.0 10 15 3.5 7.0 11 − − − 3.5 7.0 11 2.75 5.50 8.25 − − − 3.5 7.0 11 − − − 5.0 10 15 –4.19 –7.96 –16.3 − − − –3.38 –6.42 –13.2 –6.75 –12.83 –26.33 − − − –2.37 –4.49 −9.24 − − − IOL 5.0 10 15 1.93 4.96 19.3 − − − 1.56 4.0 15.6 3.12 8.0 31.2 − − − 1.09 2.8 10.9 − − − mAdc Input Current Iin 15 − ±0.1 − ±0.00001 ±0.1 − ±1.0 mAdc Input Capacitance (Vin = 0) Cin − − − − 5.0 7.5 − − pF Quiescent Current (Pin 5 is High) Auto Reset Disabled IDD 5.0 10 15 − − − 5.0 10 20 − − − 0.005 0.010 0.015 5.0 10 20 − − − 150 300 600 mAdc Auto Reset Quiescent Current (Pin 5 is low) IDDR 10 15 − − 250 500 − − 30 82 250 500 − − 1500 2000 mAdc Supply Current (Notes 3 & 4) (Dynamic plus Quiescent) ID 5.0 10 15 Vin = 0 or VDD Input Voltage (VO = 4.5 or 0.5 Vdc) (VO = 9.0 or 1.0 Vdc) (VO = 13.5 or 1.5 Vdc) “1” Level VIH (VO = 0.5 or 4.5 Vdc) (VO = 1.0 or 9.0 Vdc) (VO = 1.5 or 13.5 Vdc) Output Drive Current (VOH = 2.5 Vdc) (VOH = 9.5 Vdc) (VOH = 13.5 Vdc) Vdc Vdc IOH Source (VOL = 0.4 Vdc) (VOL = 0.5 Vdc) (VOL = 1.5 Vdc) Sink mAdc ID = (0.4 mA/kHz) f + IDD ID = (0.8 mA/kHz) f + IDD ID = (1.2 mA/kHz) f + IDD mAdc Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product performance may not be indicated by the Electrical Characteristics if operated under different conditions. 2. Data labelled “Typ” is not to be used for design purposes but is intended as an indication of the IC’s potential performance. 3. The formulas given are for the typical characteristics only at 25_C. 4. When using the on chip oscillator the total supply current (in mAdc) becomes: IT = ID + 2 Ctc VDD f x 10–3 where ID is in mA, Ctc is in pF, VDD in Volts DC, and f in kHz. (see Fig. 3) Dissipation during power−on with automatic reset enabled is typically 50 mA @ VDD = 10 Vdc. http://onsemi.com 3 MC14541B SWITCHING CHARACTERISTICS (Note 5) (CL = 50 pF, TA = 25_C) Characteristic Symbol VDD Min Typ (Note 6) Max 5.0 10 15 − − − 100 50 40 200 100 80 5.0 10 15 − − − 3.5 1.25 0.9 10.5 3.8 2.9 5.0 10 15 − − − 6.0 3.5 2.5 18 10 7.5 tWH(cl) 5.0 10 15 900 300 225 300 100 85 − − − ns fcl 5.0 10 15 − − − 1.5 4.0 6.0 0.75 2.0 3.0 MHz tWH(R) 5.0 10 15 900 300 225 300 100 85 − − − ns trem 5.0 10 15 420 200 200 210 100 100 − − − ns Output Rise and Fall Time tTLH, tTHL = (1.5 ns/pF) CL + 25 ns tTLH, tTHL = (0.75 ns/pF) CL + 12.5 ns tTLH, tTHL = (0.55 ns/pF) CL + 9.5 ns tTLH, tTHL Propagation Delay, Clock to Q (28 Output) tPLH, tPHL = (1.7 ns/pF) CL + 3415 ns tPLH, tPHL = (0.66 ns/pF) CL + 1217 ns tPLH, tPHL = (0.5 ns/pF) CL + 875 ns tPLH tPHL Propagation Delay, Clock to Q (216 Output) tPHL, tPLH = (1.7 ns/pF) CL + 5915 ns tPHL, tPLH = (0.66 ns/pF) CL + 3467 ns tPHL, tPLH = (0.5 ns/pF) CL + 2475 ns tPHL tPLH Clock Pulse Width Clock Pulse Frequency (50% Duty Cycle) MR Pulse Width Master Reset Removal Time Unit ns ms ms 5. The formulas given are for the typical characteristics only at 25_C. 6. Data labelled “Typ” is not to be used for design purposes but is intended as an indication of the IC’s potential performance. VDD PULSE GENERATOR VDD PULSE GENERATOR RS AR Q/Q SELECT MODE RS AR Q/Q SELECT MODE A B MR Q A B MR CL VSS CL VSS 20 ns (Rtc AND Ctc OUTPUTS ARE LEFT OPEN) 20 ns Q RS 20 ns 90% 50% 10% 50% DUTY CYCLE 20 ns 90% 50% 10% tPHL tPLH 50% Q tTLH Figure 1. Power Dissipation Test Circuit and Waveform 50% 90% 10% 50% tTHL Figure 2. Switching Time Test Circuit and Waveforms http://onsemi.com 4 MC14541B EXPANDED BLOCK DIAGRAM A12 B13 1 OF 4 MUX 8Q Rtc1 C Ctc2 OSC RS3 RESET AUTO RESET 5 210 213 216 C 8-STAGE COUNTER RESET 8-STAGE 8 2 COUNTER RESET POWER-ON RESET 6 MASTER RESET 10 MODE 9 Q/Q SELECT VDD = PIN 14 VSS = PIN 7 FREQUENCY SELECTION TABLE A B Number of Counter Stages n 0 0 13 8192 0 1 10 1024 1 0 8 256 1 1 16 65536 TRUTH TABLE State Count 2n 0 Pin Auto Reset, 5 Auto Reset Operating Auto Reset Disabled Master Reset, 6 Timer Operational Master Reset On Q / Q, 9 Output Initially Low After Reset Output Initially High After Reset Mode, 10 Single Cycle Mode Recycle Mode 3 TO CLOCK CIRCUIT INTERNAL RESET 2 1 Ctc RS RTC Figure 3. Oscillator Circuit Using RC Configuration http://onsemi.com 5 1 MC14541B TYPICAL RC OSCILLATOR CHARACTERISTICS 8.0 100 VDD = 15 V f, OSCILLATOR FREQUENCY (kHz) FREQUENCY DEVIATION (%) 0 10 V -4.0 -8.0 5.0 V -12 RTC = 56 kW, C = 1000 pF -16 -55 -25 VDD = 10 V 50 4.0 RS = 0, f = 10.15 kHz @ VDD = 10 V, TA = 25°C RS = 120 kW, f = 7.8 kHz @ VDD = 10 V, TA = 25°C 0 25 50 75 TA, AMBIENT TEMPERATURE (°C) 100 f AS A FUNCTION OF RTC (C = 1000 pF) (RS ≈ 2RTC) 20 10 5.0 2.0 1.0 f AS A FUNCTION OF C (RTC = 56 kW) (RS = 120 kW) 0.5 0.2 0.1 1.0 k 125 0.0001 Figure 4. RC Oscillator Stability 10 k 100 k RTC, RESISTANCE (OHMS) 1.0 m 0.001 0.01 C, CAPACITANCE (mF) 0.1 Figure 5. RC Oscillator Frequency as a Function of Rtc and Ctc OPERATING CHARACTERISTICS With Auto Reset pin set to a “0” the counter circuit is initialized by turning on power. Or with power already on, the counter circuit is reset when the Master Reset pin is set to a “1”. Both types of reset will result in synchronously resetting all counter stages independent of counter state. Auto Reset pin when set to a “1” provides a low power operation. The RC oscillator as shown in Figure 3 will oscillate with a frequency determined by the external RC network i.e., f= 1 2.3 RtcCtc and RS ≈ 2 Rtc when B is “0”, normal counting is interrupted and the 9th counter stage receives its clock directly from the oscillator (i.e., effectively outputting 28). The Q/Q select output control pin provides for a choice of output level. When the counter is in a reset condition and Q/Q select pin is set to a “0” the Q output is a “0”, correspondingly when Q/Q select pin is set to a “1” the Q output is a “1”. When the mode control pin is set to a “1”, the selected count is continually transmitted to the output. But, with mode pin “0” and after a reset condition the RS flip−flop (see Expanded Block Diagram) resets, counting commences, and after 2n−1 counts the RS flip−flop sets which causes the output to change state. Hence, after another 2n−1 counts the output will not change. Thus, a Master Reset pulse must be applied or a change in the mode pin level is required to reset the single cycle operation. if (1 kHz v f v 100 kHz) where RS ≥ 10 kW The time select inputs (A and B) provide a two−bit address to output any one of four counter stages (28, 210, 213 and 216). The 2n counts as shown in the Frequency Selection Table represents the Q output of the Nth stage of the counter. When A is “1”, 216 is selected for both states of B. However, DIGITAL TIMER APPLICATION When Master Reset (MR) receives a positive pulse, the internal counters and latch are reset. The Q output goes high and remains high until the selected (via A and B) number of clock pulses are counted, the Q output then goes low and remains low until another input pulse is received. This “one shot” is fully retriggerable and as accurate as the input frequency. An external clock can be used (pin 3 is the clock input, pins 1 and 2 are outputs) if additional accuracy is needed. Notice that a setup time equal to the desired pulse width output is required immediately following initial power up, during which time Q output will be high. Rtc Ctc NC RS AR MR INPUT 1 14 VDD 2 13 B 3 12 A 4 11 5 10 6 9 7 8 N.C. MODE Q/Q VDD OUTPUT tMR t + tMR http://onsemi.com 6 MC14541B PACKAGE DIMENSIONS SOIC−14 NB CASE 751A−03 ISSUE K D A B 14 NOTES: 1. DIMENSIONING AND TOLERANCING PER ASME Y14.5M, 1994. 2. CONTROLLING DIMENSION: MILLIMETERS. 3. DIMENSION b DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE PROTRUSION SHALL BE 0.13 TOTAL IN EXCESS OF AT MAXIMUM MATERIAL CONDITION. 4. DIMENSIONS D AND E DO NOT INCLUDE MOLD PROTRUSIONS. 5. MAXIMUM MOLD PROTRUSION 0.15 PER SIDE. 8 A3 E H L 1 0.25 M DETAIL A 7 B 13X M b 0.25 M C A S B S e DETAIL A h A X 45 _ M A1 C SEATING PLANE DIM A A1 A3 b D E e H h L M MILLIMETERS MIN MAX 1.35 1.75 0.10 0.25 0.19 0.25 0.35 0.49 8.55 8.75 3.80 4.00 1.27 BSC 5.80 6.20 0.25 0.50 0.40 1.25 0_ 7_ SOLDERING FOOTPRINT* 6.50 14X 1.18 1 1.27 PITCH 14X 0.58 DIMENSIONS: MILLIMETERS *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. http://onsemi.com 7 INCHES MIN MAX 0.054 0.068 0.004 0.010 0.008 0.010 0.014 0.019 0.337 0.344 0.150 0.157 0.050 BSC 0.228 0.244 0.010 0.019 0.016 0.049 0_ 7_ MC14541B PACKAGE DIMENSIONS TSSOP−14 CASE 948G ISSUE B 14X K REF 0.10 (0.004) 0.15 (0.006) T U M T U V S NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSION A DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. MOLD FLASH OR GATE BURRS SHALL NOT EXCEED 0.15 (0.006) PER SIDE. 4. DIMENSION B DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSION. INTERLEAD FLASH OR PROTRUSION SHALL NOT EXCEED 0.25 (0.010) PER SIDE. 5. DIMENSION K DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.08 (0.003) TOTAL IN EXCESS OF THE K DIMENSION AT MAXIMUM MATERIAL CONDITION. 6. TERMINAL NUMBERS ARE SHOWN FOR REFERENCE ONLY. 7. DIMENSION A AND B ARE TO BE DETERMINED AT DATUM PLANE −W−. S S N 2X 14 L/2 0.25 (0.010) 8 M B −U− L PIN 1 IDENT. F 7 1 0.15 (0.006) T U N S DETAIL E K A −V− ÉÉÉ ÇÇÇ ÇÇÇ ÉÉÉ K1 J J1 DIM A B C D F G H J J1 K K1 L M SECTION N−N −W− C 0.10 (0.004) −T− SEATING PLANE D H G DETAIL E SOLDERING FOOTPRINT* 7.06 1 0.65 PITCH 14X 0.36 14X 1.26 DIMENSIONS: MILLIMETERS *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. http://onsemi.com 8 MILLIMETERS INCHES MIN MAX MIN MAX 4.90 5.10 0.193 0.200 4.30 4.50 0.169 0.177 −−− 1.20 −−− 0.047 0.05 0.15 0.002 0.006 0.50 0.75 0.020 0.030 0.65 BSC 0.026 BSC 0.50 0.60 0.020 0.024 0.09 0.20 0.004 0.008 0.09 0.16 0.004 0.006 0.19 0.30 0.007 0.012 0.19 0.25 0.007 0.010 6.40 BSC 0.252 BSC 0_ 8_ 0_ 8_ MC14541B PACKAGE DIMENSIONS SOEIAJ−14 CASE 965 ISSUE B 14 NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSIONS D AND E DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS AND ARE MEASURED AT THE PARTING LINE. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.15 (0.006) PER SIDE. 4. TERMINAL NUMBERS ARE SHOWN FOR REFERENCE ONLY. 5. THE LEAD WIDTH DIMENSION (b) DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.08 (0.003) TOTAL IN EXCESS OF THE LEAD WIDTH DIMENSION AT MAXIMUM MATERIAL CONDITION. DAMBAR CANNOT BE LOCATED ON THE LOWER RADIUS OR THE FOOT. MINIMUM SPACE BETWEEN PROTRUSIONS AND ADJACENT LEAD TO BE 0.46 ( 0.018). LE 8 Q1 E HE M_ L 7 1 DETAIL P Z D VIEW P A e c A1 b 0.13 (0.005) M 0.10 (0.004) DIM A A1 b c D E e HE L LE M Q1 Z MILLIMETERS MIN MAX --2.05 0.05 0.20 0.35 0.50 0.10 0.20 9.90 10.50 5.10 5.45 1.27 BSC 7.40 8.20 0.50 0.85 1.10 1.50 10 _ 0_ 0.70 0.90 --1.42 INCHES MIN MAX --0.081 0.002 0.008 0.014 0.020 0.004 0.008 0.390 0.413 0.201 0.215 0.050 BSC 0.291 0.323 0.020 0.033 0.043 0.059 10 _ 0_ 0.028 0.035 --0.056 ON Semiconductor and the are registered trademarks of Semiconductor Components Industries, LLC (SCILLC) or its subsidiaries in the United States and/or other countries. SCILLC owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of SCILLC’s product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent−Marking.pdf. SCILLC reserves the right to make changes without further notice to any products herein. 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