Datasheet ICM7555, ICM7556 (Intersil)

HerstellerIntersil
BeschreibungGeneral Purpose Timers
Seiten / Seite13 / 1 — ICM7555. ICM7556. (8 LD PDIP, SOIC). (14 LD PDIP, CERDIP). DISCHARGE1 1. …
Revision2017-11-27
Dateiformat / GrößePDF / 420 Kb
DokumentenspracheEnglisch

ICM7555. ICM7556. (8 LD PDIP, SOIC). (14 LD PDIP, CERDIP). DISCHARGE1 1. 14 VDD. THRESHOLD1 2. 13 DISCHARGE2. GND 1. 8 VDD. CONTROL 3

Datasheet ICM7555, ICM7556 Intersil, Revision: 2017-11-27

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DATASHEET ICM7555, ICM7556 FN2867 General Purpose Timers Rev 1.00 June 28, 2016 The ICM7555 and ICM7556 are CMOS RC timers providing Features significantly improved performance over the standard SE/NE 555/556 and 355 timers, while at the same time being • Exact equivalent in most cases for SE/NE 555/556 or direct replacements for those devices in most applications. TLC555/556 Improved parameters include low supply current, wide • Low supply current operating supply voltage range, low Threshold, Trigger and - ICM7555 . 60µA Reset currents, no crowbarring of the supply current during output transitions, higher frequency performance and no - ICM7556 . 120µA requirement to decouple Control Voltage for stable operation. • Extremely low input currents . 20pA Specifically, the ICM7555 and ICM7556 are stable controllers • High speed operation . 1MHz 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 independently of each other, sharing only V+ and GND. In the • Temperature stability . 0.005%/°C at +25°C 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 SE/NE 555/556 devices, the Control Voltage terminal need not • Timing from microseconds through hours 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 provide minimal offsets to drive CMOS loads. • High output source/sink driver can drive TTL/CMOS • 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 VDD THRESHOLD1 2 13 DISCHARGE2 GND 1 8 VDD CONTROL 3 12 THRESHOLD2 TRIGGER 2 7 DISCHARGE VOLTAGE1 RESET1 CONTROL 4 11 OUTPUT 3 6 THRESHOLD VOLTAGE2 OUTPUT1 5 10 RESET2 RESET 4 5 CONTROL VOLTAGE TRIGGER1 6 9 OUTPUT2 GND 7 8 TRIGGER2
FN2867 Rev 1.00 Page 1 of 13 June 28, 2016