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參數(shù)資料
| 型號： | 935171930025 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 模擬波形發(fā)生器 |
| 英文描述： | PULSE, 0.5 MHz, TIMER, UUC |
| 封裝： | DIE |
| 文件頁數(shù)： | 1/9頁 |
| 文件大小： | 66K |
| 代理商： | 935171930025 |
Philips Semiconductors Linear Products
Product specification
ICM7555
General purpose CMOS timer
337
August 31, 1994
853-1192 13721
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: 80A (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
THRESHOLD
D and N Packages
DISCHARGE
VDD
CONTROL VOLTAGE
1
2
3
4
5
6
7
8
GND
TRIGGER
OUTPUT
RESET
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
TEMPERATURE RANGE
ORDER CODE
DWG #
8-Pin Plastic Dual In-Line Package (DIP)
0 to +70
°C
ICM7555CN
0404B
8-Pin Plastic Small Outline (SO) Package
0 to +70
°C
ICM7555CD
0174C
8-Pin Plastic Dual In-Line Package (DIP)
-40 to +85
°C
ICM7555IN
0404B
8-Pin Plastic Small Outline (SO) Package
-40 to +85
°C
ICM7555ID
0174C
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