参数资料
型号: MC14578P
厂商: Freescale Semiconductor
文件页数: 1/8页
文件大小: 0K
描述: IC SMOKE COMPARATOR MPWR 16-DIP
标准包装: 25
系列: *
类型: *
应用: *
安装类型: 通孔
封装/外壳: 16-DIP(0.300",7.62mm)
供应商设备封装: 16-PDIP
包装: 管件
MC14578
Rev 2, 05/2005
Freescale Semiconductor
Technical Data
Freescale Semiconductor, Inc., 2005. All rights reserved.
Archived by Freescale Semiconductor, Inc., 2009
Archive
Information
Archive
Information
CMOS
Micro-Power Comparator plus
Voltage Follower
The MC14578 is an analog building block consisting of a very-high input
impedance comparator. The voltage follower allows monitoring the noninverting
input of the comparator without loading.
Four enhancement-mode MOSFETs are also included on chip. These FETs
can be externally configured as open-drain or totem-pole outputs. The drains
have on-chip static-protecting diodes. Therefore, the output voltage must be
maintained between VSS and VDD.
The chip requires one external component. A 3.9 M
Ω ±10% resistor must be
connected from the Rbias pin to VDD. This circuit is designed to operate in smoke
detector systems that comply with UL217 and UL268 specifications.
Features
Applications:
Pulse Shapers
Line-Powered Smoke Detectors
Threshold Detectors
Liquid/Moisture Sensors
Low-Battery Detectors
CO Detector and Micro Interface
Operating Voltage Range: 3.5 to 14 V
Operating Temperature Range: -30
° to 70°C
Input Current (IN + Pin): ±1 pA @ 25
°C (DIP Only)
Quiescent Current: 10
μA @ 25°C
Electrostatic Discharge (ESD) Protection Circuitry on All Pins
ORDERING INFORMATION
Device
Temperature
Range
Case No.
Package
MC14578P
-30
° to 70°C
648-08
Plastic Dip
MC14578
CMOS
MICRO-POWER COMPARATOR
PLUS VOLTAGE FOLLOWER
P SUFFIX
PLASTIC DIP
CASE 648-08
8
10
9
1
2
3
4
5
6
7
16
15
14
13
12
11
VDD
Comp OUT
IN A
IN B
OUT A
OUT B
IN C
OUT C1
NC
IN +
NC
Buff OUT
IN–
Rbias
VSS
OUT C2
Figure 1. Pin Connections
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