LOW POWER DUAL CMOS TIMER
TS556
SO14 (plastic micropackage)
Pin connections (top view)
Discharge
Threshold Control Voltage Reset Output Trigger...
Description
TS556
SO14 (plastic micropackage)
Pin connections (top view)
Discharge
Threshold Control Voltage Reset Output Trigger GND
1 2 3 4 5 6 7
14 +VS 13 Discharge
12 Threshold
11
Control Voltage
10 Reset
9 Output
8 Trigger
Low-power dual CMOS timer
Datasheet - production data
Description
The TS556 is a dual CMOS timer which offers a
very low consumption:
(IcIccc(T(TYYPP) )NTES555566(a=)
220 µA at = 6 mA),
VCC
=
5
V
versus
and high frequency:
(f(fm(maaxx.).)NTES555566(a=)
2.7 MHz versus = 0.1 MHz)
In both monostable and astable modes, timing remains very accurate.
The TS556 provides reduced supply current spikes during output transitions, which enables the use of lower decoupling capacitors compared to those required by bipolar NE556(a).
Due to the high input impedance (1012 Ω), timing capacitors can also be minimized.
Features
Very low power consumption: – 220 µA typ at VCC = 5 V – 180 µA typ at VCC = 3 V
High maximum astable frequency 2.7 MHz
Pin-to-pin and functionally compatible with bipolar NE556(a)
Wide voltage range: 2 V to 16 V
Supply current spikes reduced during output transitions
High input impedance: 1012 Ω
Output compatible with TTL, CMOS and logic MOS
a. Terminated product
June 2015
This is information on a product in full production.
DocID4078 Rev 3
1/19
www.st.com
Contents
Contents
TS556
1 Absolute maximum ratings and operating conditions . . . . . . . . . . . . . 3
2 Schematic diagram . . . . . . . . . . . . . . . . . ...
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