DATASHEET ICM7555, ICM7556 FN2867 Rev 1.00 General Purpose Timers June 28, 2016 The ICM7555 and ICM7556 are CMOS RC timers providing Features significantly improved performance over the standard Exact equivalent in most cases for SE/NE 555/556 or SE/NE 555/556 and 355 timers, while at the same time being TLC555/556 direct replacements for those devices in most applications. Improved parameters include low supply current, wide Low supply current operating supply voltage range, low Threshold, Trigger and - ICM7555 . 60A Reset currents, no crowbarring of the supply current during - ICM7556 . 120A output transitions, higher frequency performance and no requirement to decouple Control Voltage for stable operation. Extremely low input currents 20pA High speed operation 1MHz Specifically, the ICM7555 and ICM7556 are stable controllers capable of producing accurate time delays or frequencies. The Guaranteed supply voltage range 2V to 18V ICM7556 is a dual ICM7555, with the two timers operating Temperature stability . 0.005%/C at +25C independently of each other, sharing only V+ and GND. In the one shot mode, the pulse width of each circuit is precisely Normal reset function - no crowbarring of supply during controlled by one external resistor and capacitor. For astable output transition operation as an oscillator, the free running frequency and the Can be used with higher impedance timing elements than duty cycle are both accurately controlled by two external regular 555/556 for longer RC time constants resistors and one capacitor. Unlike the regular bipolar Timing from microseconds through hours SE/NE 555/556 devices, the Control Voltage terminal need not be decoupled with a capacitor. The circuits are triggered and Operates in both astable and monostable modes reset on falling (negative) waveforms, and the output inverter Adjustable duty cycle can source or sink currents large enough to drive TTL loads, or High output source/sink driver can drive TTL/CMOS provide minimal offsets to drive CMOS loads. Outputs have very low offsets, HIGH and LOW Pb-free (RoHS Compliant) Applications Precision timing Pulse generation Sequential timing Time delay generation Pulse width modulation Pulse position modulation Missing pulse detector Pin Configurations ICM7555 ICM7556 (8 LD PDIP, SOIC) (14 LD PDIP, CERDIP) TOP VIEW TOP VIEW DISCHARGE1 1 14 V DD THRESHOLD1 2 13 DISCHARGE2 1 8 GND V DD CONTROL 3 12 THRESHOLD2 VOLTAGE1 TRIGGER 2 7 DISCHARGE CONTROL RESET1 4 11 VOLTAGE2 3 6 OUTPUT THRESHOLD OUTPUT1 5 10 RESET2 CONTROL 4 5 RESET VOLTAGE TRIGGER1 6 9 OUTPUT2 GND 7 8 TRIGGER2 FN2867 Rev 1.00 Page 1 of 13 June 28, 2016ICM7555, ICM7556 Ordering Information TEMP. RANGE TAPE AND REEL PACKAGE PART NUMBER PART MARKING (C) (UNITS) (RoHS COMPLIANT) PKG. DWG. ICM7555CBAZ (Notes 2, 3) 7555 CBAZ 0 to +70 8 Ld SOIC M8.15 ICM7555CBAZ-T (Notes 1, 2, 3) 7555 CBAZ 0 to +70 2.5k 8 Ld SOIC (Tape and Reel) M8.15 ICM7555IBAZ (Notes 2, 3) 7555 IBAZ -25 to +85 8 Ld SOIC M8.15 ICM7555IBAZ-T (Notes 1, 2, 3) 7555 IBAZ -25 to +85 2.5k 8 Ld SOIC (Tape and Reel) M8.15 ICM7555IPAZ (Notes 2, 3) 7555 IPAZ -25 to +85 8 Ld PDIP E8.3 ICM7556IPDZ (Notes 2, 3) ICM7556IPDZ -25 to +85 14 Ld PDIP E14.3 ICM7556MJD ICM7556MJD -55 to +125 14 Ld Cerdip F14.3 (No longer available or supported) NOTES: 1. Please refer to TB347 for details on reel specifications. 2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal (e3 termination finish, which is 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. 3. For Moisture Sensitivity Level (MSL), please see product information page for ICM7555, ICM7556. For more information on MSL, please see tech brief TB363. FN2867 Rev 1.00 Page 2 of 13 June 28, 2016