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PDF 7555CN Data sheet ( Hoja de datos )
| Número de pieza | 7555CN | |
| Descripción | General purpose CMOS timer | |
| Fabricantes | NXP Semiconductors | |
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Philips Semiconductors Linear Products
Product specification
General purpose CMOS timer
ICM7555
www.DataSheet4U.com
DESCRIPTION
The ICM7555 is a CMOS timer providing significantly improved
performance over the standard NE/SE555 timer, while at the same
time being a direct replacement for those devices in most
applications. Improved parameters include low supply current, wide
operating supply voltage range, low THRESHOLD, TRIGGER, and
RESET currents, no crowbarring of the supply current during output
transitions, higher frequency performance and no requirement to
decouple CONTROL VOLTAGE for stable operation.
The ICM7555 is a stable controller capable of producing accurate
time delays or frequencies.
In the one-shot mode, the pulse width of each circuit is precisely
controlled by one external resistor and capacitor. For astable
operation as an oscillator, the free-running frequency and the duty
cycle are both accurately controlled by two external resistors and
one capacitor. Unlike the bipolar 555 device, the CONTROL
VOLTAGE terminal need not be decoupled with a capacitor. The
TRIGGER and RESET inputs are active low. The output inverter can
source or sink currents large enough to drive TTL loads or provide
minimal offsets to drive CMOS loads.
FEATURES
• Exact equivalent in most applications for NE/SE555
• Low supply current: 80µA (typ)
• Extremely low trigger, threshold, and reset currents: 20pA (typ)
• High-speed operation: 500kHz guaranteed
• Wide operating supply voltage range guaranteed 3 to 16V over full
automotive temperatures
• Normal reset function; no crowbarring of supply during output
transition
• Can be used with higher-impedance timing elements than the
bipolar 555 for longer time constants
PIN CONFIGURATION
D and N Packages
GND 1
TRIGGER 2
OUTPUT 3
RESET 4
8 VDD
7 DISCHARGE
6 THRESHOLD
5 CONTROL VOLTAGE
• Timing from microseconds through hours
• Operates in both astable and monostable modes
• Adjustable duty cycle
• High output source/sink driver can drive TTL/CMOS
• Typical temperature stability of 0.005%/oC at 25°C
• Rail-to-rail outputs
APPLICATIONS
• Precision timing
• Pulse generation
• Sequential timing
• Time delay generation
• Pulse width modulation
• Pulse position modulation
• Missing pulse detector
ORDERING INFORMATION
DESCRIPTION
8-Pin Plastic Dual In-Line Package (DIP)
8-Pin Plastic Small Outline (SO) Package
8-Pin Plastic Dual In-Line Package (DIP)
8-Pin Plastic Small Outline (SO) Package
TEMPERATURE RANGE
0 to +70°C
0 to +70°C
-40 to +85°C
-40 to +85°C
ORDER CODE
ICM7555CN
ICM7555CD
ICM7555IN
ICM7555ID
DWG #
0404B
0174C
0404B
0174C
August 31, 1994
337 853-1192 13721
1 page  
Philips Semiconductors Linear Products
General purpose CMOS timer
www.DataSheet4U.com
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
100.0
VDD = 18V
VDD = 5V
10.0
VDD = 2V
1.0
Product specification
ICM7555
TA = 25°C
0.1
0.1
100.0
10.0
1.0
0.1
0.1
1.0
DISCHARGE VOLTAGE (V)
Discharge Low Output Voltage vs Discharge Sink Current
10.0
VDD = 18V
VDD = 5V
TA = +125°C
VDD = 2V
1.0
OUTPUT VOLTAGE (V)
Low Output Voltage vs Output Sink Current
10.0
August 31, 1994
341
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| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet 7555CN.PDF ] | |
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