TS556 Datasheet, PDF (1/11 Pages) STMicroelectronics – LOW POWER DUAL CMOS TIMER

TS556
LOW POWER DUAL CMOS TIMER
s VERY LOW POWER CONSUMPTION :
220 µA typ at V_CC = 5V
180 µA typ at V_CC = 3V
s HIGH MAXIMUM ASTABLE FREQUENCY
2.7MHz
s PIN-TO-PIN AND FUNCTIONALLY
COMPATIBLE WITH BIPOLAR NE556
s WIDE VOLTAGE RANGE : +2V to +16V
s HIGH OUTPUT CURRENT CAPABILITY
s SUPPLY CURRENT SPIKES REDUCED
DURING OUTPUT TRANSITIONS
s HIGH INPUT IMPEDANCE : 10¹²â„¦
s OUTPUT COMPATIBLE WITH TTL,CMOS
AND LOGIC MOS
DESCRIPTION
The TS556 is a dual CMOS timer which offers
very low consumption (I_cc(TYP) TS556 = 220µA at
V_CC=+5V versus I_cc(TYP) NE556 = 6mA) and high
frequency f_f(max.) TS556 = 2.7MHz versus f_(max.)
NE556 = 0.1 MHz)
Thus, either in Monostable or Astable mode, tim-
ing 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.
Timing capacitors can also be minimized due to
high input impedance (10¹²â„¦).
ORDER CODES
Part Number
TS556C
TS556I
TS556M
Temperature Range
0°C, +70°C
-40°C, +125°C
-55°C, +125°C
Package
ND
••
••
••
N = Dual in Line Package (DIP)
D = Small Outline Package (SO) - also available in Tape & Reel (DT)
N
DIP14
(Plastic Package)
D
SO14
(Plastic Micropackage)
PIN CONNECTIONS (top view)
Discharge 1
Threshold 2
Control
Voltage
3
Reset 4
Output 5
Trigger 6
GND 7
14 +V_S
13 Discharge
12 Threshold
11
Control
Voltage
10 Reset
9 Output
8 Trigger
February 2003
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