7555IBAZ

® ICM7555, ICM7556 Data Sheet August 24, 2006 FN2867.9 General Purpose Timers The ICM7555 and ICM7556 are CMOS RC timers providing significantly improved performance over the standard SE/NE 555/6 and 355 timers, while at the same time being direct replacements for those devices in most applications. Improved parameters include low supply current, wide operating supply voltage range, low THRESHOLD, TRIGGER and RESET currents, no crowbarring of the supply current during output transitions, higher frequency performance and no requirement to decouple CONTROL VOLTAGE for stable operation. Specifically, the ICM7555 and ICM7556 are stable controllers capable of producing accurate time delays or frequencies. The ICM7556 is a dual ICM7555, with the two timers operating independently of each other, sharing only V+ and GND. In the one shot mode, the pulse width of each circuit is precisely controlled by one external resistor and capacitor. For astable operation as an oscillator, the free running frequency and the duty cycle are both accurately controlled by two external resistors and one capacitor. Unlike the regular bipolar SE/NE 555/6 devices, the CONTROL VOLTAGE terminal need not be decoupled with a capacitor. The circuits are triggered and reset on falling (negative) waveforms, and the output inverter can source or sink currents large enough to drive TTL loads, or provide minimal offsets to drive CMOS loads. Features • Exact Equivalent in Most Cases for SE/NE555/556 or TLC555/556 • Low Supply Current - ICM7555 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60μA - ICM7556 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120μA • Extremely Low Input Currents . . . . . . . . . . . . . . . . . 20pA • High Speed Operation . . . . . . . . . . . . . . . . . . . . . . . 1MHz • Guaranteed Supply Voltage Range . . . . . . . . . 2V to 18V • Temperature Stability . . . . . . . . . . . . 0.005%/°C at +25°C • Normal Reset Function - No Crowbarring of Supply During Output Transition • Can be Used with Higher Impedance Timing Elements than Regular 555/6 for Longer RC Time Constants • Timing from Microseconds through Hours • Operates in Both Astable and Monostable Modes • Adjustable Duty Cycle • High Output Source/Sink Driver can Drive TTL/CMOS • Outputs have Very Low Offsets, HI and LO • Pb-Free Plus Anneal Available (RoHS Compliant) Applications • Precision Timing • Pulse Generation • Sequential Timing • Time Delay Generation • Pulse Width Modulation • Pulse Position Modulation • Missing Pulse Detector Pinouts ICM7555 (8 LD PDIP, SOIC) TOP VIEW ICM7556 (14 LD PDIP, CERDIP) TOP VIEW DISCHARGE 1 GND 1 TRIGGER 2 OUTPUT 3 RESET 4 8 VDD 7 DISCHARGE 6 THRESHOLD 5 CONTROL VOLTAGE THRESH- 2 OLD CONTROL 3 VOLTAGE RESET 4 OUTPUT 5 TRIGGER 6 GND 7 14 VDD 13 DISCHARGE 12 THRESHOLD 11 CONTROL VOLTAGE 10 RESET 9 OUTPUT 8 TRIGGER 1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright © Intersil Americas Inc. 2002, 2004, 2005, 2006. All Rights Reserved All other trademarks mentioned are the property of their respective owners. ICM7555, ICM7556 Ordering Information PART NUMBER ICM7555CBA ICM7555CBA-T ICM7555CBAZ (Note) ICM7555CBAZ-T (Note) ICM7555IBA ICM7555IBAT ICM7555IBAZ (Note) ICM7555IBAZ-T (Note) ICM7555IPA ICM7555IPAZ (Note) ICM7556IPD ICM7556IPDZ (Note) ICM7556MJD PART MARKING 7555 CBA 7555 CBA 7555 CBAZ 7555 CBAZ 7555 IBA 7555 IBA 7555 IBAZ 7555 IBAZ 7555 IPA 7555 IPAZ ICM7556IPD ICM7556IPDZ ICM7556MJD TEMP. RANGE (°C) 0 to +70 0 to +70 0 to +70 0 to +70 -25 to +85 -25 to +85 -25 to +85 -25 to +85 -25 to +85 -25 to +85 -25 to +85 -25 to +85 -55 to +125 PACKAGE 8 Ld SOIC 8 Ld SOIC Tape and Reel 8 Ld SOIC (Pb-free) 8 Ld SOIC (Pb-free) Tape and Reel 8 Ld SOIC 8 Ld SOIC Tape and Reel 8 Ld SOIC (Pb-free) 8 Ld SOIC (Pb-free) Tape and Reel 8 Ld PDIP 8 Ld PDIP** (Pb-free) 14 Ld PDIP 14 Ld PDIP** (Pb-free) 14 Ld Cerdip PKG. DWG. # M8.15 M8.15 M8.15 M8.15 M8.15 M8.15 M8.15 M8.15 E8.3 E8.3 E14.3 E14.3 F14.3 **Pb-free PDIPs can be used for through hole wave solder processing only. They are not intended for use in Reflow solder processing applications. NOTE: Intersil Pb-free products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. 2 FN2867.9 August 24, 2006 ICM7555, ICM7556 Absolute Maximum Ratings Supply Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+18V Input Voltage Trigger, Control Voltage, Threshold, Reset (Note 1) . . . . . . . . . . . . . . . . . . . . . V+ +0.3V to GND -0.3V Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100mA Thermal Information Thermal Resistance (Typical, Note 2) θJA (°C/W) θJC (°C/W) 14 Lead CERDIP Package. . . . . . . . . . 80 24 14 Lead PDIP Package* . . . . . . . . . . . 115 N/A 8 Lead PDIP Package* . . . . . . . . . . . . 130 N/A 8 Lead SOIC Package . . . . . . . . . . . . . 170 N/A Maximum Junction Temperature (Hermetic Package) . . . . . . . +175°C Maximum Junction Temperature (Plastic Package) . . . . . . . +150°C Maximum Storage Temperature Range . . . . . . . . -65°C to +150°C Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . +300°C (SOIC - Lead Tips Only) * Pb-free PDIPs can be used for through hole wave solder processing only. They are not intended for use in Reflow solder processing applications. Operating Conditions Temperature Range ICM7555C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to +70°C ICM7555I, ICM7556I . . . . . . . . . . . . . . . . . . . . . . -25°C to +85°C ICM7556M . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55°C to +125°C CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. NOTES: 1. Due to the SCR structure inherent in the CMOS process used to fabricate these devices, connecting any terminal to a voltage greater than V+ +0.3V or less than V- -0.3V may cause destructive latchup. For this reason it is recommended that no inputs from external sources not operating from the same power supply be applied to the device before its power supply is established. In multiple supply systems, the supply of the ICM7555 and ICM7556 must be turned on first. 2. θJA is measured with the component mounted on a low effective thermal conductivity test board in free air. See Tech Brief 379 for details. Electrical Specifications Applies to ICM7555 and ICM7556, unless otherwise specified TA = +25°C (NOTE 4) -55°C TO +125°C MIN TYP MAX 300 300 600 600 UNITS μA μA μA μA % 858 1161 150 200 250 0.5 2 1717 2323 150 200 250 0.5 62 28 67 32 71 36 10 10 62 67 71 61 61 27 0.5 72 37 50 50 72 0.5 μs ppm/°C ppm/°C ppm/°C %/V % μs ppm/°C ppm/°C ppm/°C %/V % VDD % VDD nA nA % VDD PARAMETER Static Supply Current SYMBOL IDD ICM7555 TEST CONDITIONS VDD = 5V VDD = 15V ICM7556 VDD = 5V VDD = 15V MIN TYP 40 60 80 120 2 MAX 200 300 400 600 Monostable Timing Accuracy RA = 10K, C = 0.1μF, VDD = 5V Drift with Temperature (Note 3) VDD = 5V VDD = 10V VDD = 15V Drift with Supply (Note 3) Astable Timing Accuracy VDD = 5V to 15V RA = RB = 10K, C = 0.1μF, VDD = 5V Drift with Temperature (Note 3) VDD = 5V VDD = 10V VDD = 15V Drift with Supply (Note 3) Threshold Voltage Trigger Voltage Trigger Current Threshold Current Control Voltage VTH VTRIG ITRIG ITH VCV VDD = 5V to 15V VDD = 15V VDD = 15V VDD = 15V VDD = 15V VDD = 15V 3 FN2867.9 August 24, 2006 ICM7555, ICM7556 Electrical Specifications Applies to ICM7555 and ICM7556, unless otherwise specified (Continued) TA = +25°C PARAMETER Reset Voltage Reset Current Discharge Leakage Output Voltage SYMBOL VRST IRST IDIS VOL TEST CONDITIONS VDD = 2V to 15V VDD = 15V VDD = 15V VDD = 15V, ISINK = 20mA VDD = 5V, ISINK = 3.2mA VOH VDD = 15V, ISOURCE = 0.8mA VDD = 5V, ISOURCE = 0.8mA Discharge Output Voltage VDIS VDD = 5V, ISINK = 15mA VDD = 15V, ISINK = 15mA Supply Voltage (Note 3) Output Rise Time (Note 3) Output Fall Time (Note 3) Oscillator Frequency (Note 3) VDD tR tF fMAX Functional Operation RL = 10M, CL = 10pF, VDD = 5V RL = 10M, CL = 10pF, VDD = 5V VDD = 5V, RA = 470Ω, RB = 270Ω, C = 200pF 2.0 75 75 1 18.0 3.0 14.3 4.0 0.4 0.2 14.6 4.3 0.2 0.4 MIN 0.4 TYP MAX 1.0 10 10 1.0 0.4 14.2 3.8 0.6 0.4 16.0 (NOTE 4) -55°C TO +125°C MIN 0.2 TYP MAX 1.2 50 50 1.25 0.5 UNITS V nA nA V V V V V V V ns ns MHz NOTES: 3. These parameters are based upon characterization data and are not tested. 4. Applies only to military temperature range product (M suffix). Functional Diagram VDD 8 R THRESHOLD 6 5 CONTROL VOLTAGE R + COMPARATOR A + 4 FLIP-FLOP RESET OUTPUT DRIVERS 7 n OUTPUT 3 DISCHARGE TRIGGER 2 R COMPARATOR B 1 GND 1 NOTE: This functional diagram reduces the circuitry down to its simplest equivalent components. Tie down unused inputs. TRUTH TABLE THRESHOLD VOLTAGE Don’t Care >2/3(V+) 1/3(V+) >1/3(V+)