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參數資料
| 型號： | MC14541 |
| 廠商： | ON SEMICONDUCTOR |
| 英文描述： | UltraLow-Supply Current/Supply-Voltage Supervisory Circuits 6-SOT-23 -40 to 85 |
| 中文描述： | 可編程定時器 |
| 文件頁數： | 1/7頁 |
| 文件大小： | 204K |
| 代理商： | MC14541 |
MOTOROLA CMOS LOGIC DATA
Motorola, Inc. 1995
1
MC14541B
The MC14541B programmable timer consists of a 16–stage binary
counter, an integrated oscillator for use with an external capacitor and two
resistors, an automatic power–on reset circuit, and output control logic.
Timing is initialized by turning on power, whereupon the power–on reset is
enabled and initializes the counter, within the specified VDD range. With the
power already on, an external reset pulse can be applied. Upon release of
the initial reset command, the oscillator will oscillate with a frequency
determined by the external RC network. The 16–stage counter divides the
oscillator frequency (fosc) with the nth stage frequency being fosc/2n.
Available Outputs 28, 210, 213 or 216
Increments on Positive Edge Clock Transitions
Built–in Low Power RC Oscillator (
±
2% accuracy over temperature
range and
±
20% supply and
±
3% over processing at < 10 kHz)
Oscillator May Be Bypassed if External Clock Is Available (Apply
external clock to Pin 3)
External Master Reset Totally Independent of Automatic Reset
Operation
Operates as 2n Frequency Divider or Single Transition Timer
Q/Q Select Provides Output Logic Level Flexibility
Reset (auto or master) Disables Oscillator During Resetting to Provide
No Active Power Dissipation
Clock Conditioning Circuit Permits Operation with Very Slow Clock Rise
and Fall Times
Automatic Reset Initializes All Counters On Power Up
Supply Voltage Range = 3.0 Vdc to 18 Vdc with Auto Reset
Disabled (Pin 5 = VDD)
= 8.5 Vdc to 18 Vdc with Auto Reset
Symbol
Parameter
Iin
Iout
PD
Tstg
TL
* Maximum Ratings are those values beyond which damage to the device may occur.
Plastic “P and D/DW” Packages: – 7.0 mW/ C From 65 C To 125 C
Ceramic “L” Packages: – 12 mW/ C From 100 C To 125 C
DC Supply Voltage
Value
– 0.5 to + 18.0
Unit
V
Input or Output Voltage (DC or Transient)
±
10
V
Input Current (DC or Transient), per Pin
Output Current (DC or Transient), per Pin
±
45
mA
mA
Power Dissipation, per Package
500
mW
Storage Temperature
– 65 to + 150
C
Lead Temperature (8–Second Soldering)
260
C
SEMICONDUCTOR TECHNICAL DATA
REV 3
1/94
L SUFFIX
CERAMIC
CASE 620
ORDERING INFORMATION
MC14XXXBCP
MC14XXXBCL
MC14XXXBD
TA = – 55
°
to 125
°
C for all packages.
Plastic
Ceramic
SOIC
P SUFFIX
PLASTIC
CASE 648
D SUFFIX
SOIC
CASE 751B
PIN ASSIGNMENT
NC = NO CONNECTION
11
12
13
14
8
9
10
5
4
3
2
1
7
6
MODE
NC
A
B
VDD
Q
Q/Q SEL
NC
RS
Ctc
Rtc
VSS
MR
AR
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MC145412P | 制造商:Motorola Inc 功能描述: |
| MC14541BCP | 功能描述:計時器和支持產品 LOG CMOS OSILATR TIMER RoHS:否 制造商:Micrel 類型:Standard 封裝 / 箱體:SOT-23 內部定時器數量:1 電源電壓-最大:18 V 電源電壓-最小:2.7 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel |
| MC14541BCPG | 功能描述:計時器和支持產品 3-18V with Auto RoHS:否 制造商:Micrel 類型:Standard 封裝 / 箱體:SOT-23 內部定時器數量:1 電源電壓-最大:18 V 電源電壓-最小:2.7 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel |
| MC14541BD | 功能描述:計時器和支持產品 LOG CMOS OSILATR TIMER RoHS:否 制造商:Micrel 類型:Standard 封裝 / 箱體:SOT-23 內部定時器數量:1 電源電壓-最大:18 V 電源電壓-最小:2.7 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel |
| MC14541BDG | 功能描述:計時器和支持產品 3-18V with Auto RoHS:否 制造商:Micrel 類型:Standard 封裝 / 箱體:SOT-23 內部定時器數量:1 電源電壓-最大:18 V 電源電壓-最小:2.7 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel |
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