TS556 CMOS TIMER Datasheet

TS556 Datasheet, PDF, Equivalent


Part Number

TS556

Description

LOW POWER DUAL CMOS TIMER

Manufacture

STMicroelectronics

Total Page 19 Pages
Datasheet
Download TS556 Datasheet


TS556
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

TS556
Contents
Contents
TS556
1 Absolute maximum ratings and operating conditions . . . . . . . . . . . . . 3
2 Schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.1 Monostable operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.2 Astable operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.1 SO14 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
6 Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2/19 DocID4078 Rev 3


Features TS556 SO14 (plastic micropackage) Pin connections (top view) Discharge Thres hold Control Voltage Reset Output Trigg er GND 1 2 3 4 5 6 7 14 +VS 13 Discha rge 12 Threshold 11 Control Voltage 10 Reset 9 Output 8 Trigger Low-pow er dual CMOS timer Datasheet - product ion data Description The TS556 is a d ual CMOS timer which offers a very low consumption: (IcIccc(T(TYYPP) )NTES55 5566(a=) 220 µA at = 6 mA), VCC = 5 V versus and high frequency: (f(f m(maaxx.).)NTES555566(a=) 2.7 MHz vers us = 0.1 MHz) In both monostable and a stable modes, timing remains very accur ate. The TS556 provides reduced supply current spikes during output transitio ns, which enables the use of lower deco upling capacitors compared to those req uired by bipolar NE556(a). Due to the h igh input impedance (1012 Ω), timing c apacitors can also be minimized. Featu res • Very low power consumption: – 220 µA typ at VCC = 5 V – 180 µA t yp at VCC = 3 V • High maximum astable frequency 2.7 MHz • Pin-to-pin and.
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