DG425:改进的、低功耗、带有锁存的CMOS模拟开关

Maxim's redesigned DG421/DG423/DG425 monolithic analog switches now feature guaranteed on-resistance matching (3Ω max) between switches and on-resistance flatness over the signal range (4Ω max). These low on-resistance switches (20Ω typ) conduct equally well in both directions. They guarantee a low charge injection of 15pC maximum and an ESD tolerance of 2000V minimum per Method 3015.7. Off leakage current over temperature has also been reduced (less than 5nA at +85°C). The DG421/DG423/DG425 are precision, dual CMOS switches with latchable logic inputs that simplify interfacing with microprocessors (µPs). The single-pole/single-throw DG421 and double-pole/single-throw DG425 are normally open dual switches. The dual, single-pole/double-throw DG423 has two normally open and two normally closed switches. Fast switching times (175ns for tON and 145ns for tOFF) and low power consumption (35µW max) make these parts ideal for battery-powered applications requiring µP-compatible switches. Operation is from a single +10V to +30V supply, or bipolar ±4.5V to ±20V supplies. Fabricated with the same 44V silicon-gate process, these switches have rail-to-rail signal handling capabilities.

关键特性
  • Plug-In Upgrades for Industry-Standard DG421/DG423/DG425
  • Improved R(DS)ON Match Between Channels (3Ω max)
  • Guaranteed RFLAT(ON) Over Signal Range (4Ω max)
  • Improved Charge Injection (15pC max)
  • Improved Off Leakage Current Over Temperature (< 5nA at +85°C)
  • Withstands Electrostatic Discharge (2000V min) per Method 3015.7
  • Low RDS(ON)(35Ω max)
  • Single-Supply Operation +10V to +30V
  • Bipolar-Supply Operation ±4.5V to ±20V
  • Low Power Consumption (35µW max)
  • Rail-to-Rail Signal Handling Capability
  • TTL/CMOS-Logic Compatible
功能框图
DG421:引脚配置
产品应用
  • 音频信号切换
  • 电池供电应用
  • 通信系统
  • 传真机
  • 引导与控制系统
  • 军用无线装置
  • 调制解调器
  • PBX、PABX
  • 采样保持电路
  • 测试设备
关键参数
Part NumberFunctionsConfig.ChannelsNormal PositionVSUPPLY (Single)
(V)
VSUPPLY (Single)
(V)
VSUPPLY (Dual)
(±V)
VSUPPLY (Dual)
(±V)
RON
(Ω)
IL(OFF)
(nA)
tON
(ns)
tOFF
(ns)
QINJECTION
(pC)
CON
(pF)
COFF
(pF)
Package/PinsBudgetary
Price
minmaxminmaxmaxmaxminmaxSee Notes
DG421SwitchSPST2Open10304.520350.25250200153912
CDIP(N)/16
PDIP(N)/16
PLCC/20
SOIC(N)/16
-
DG423SPDT-
CDIP(N)/16
PDIP(N)/16
PLCC/20
SOIC(N)/16
$4.27 @1k
数据手册DataSheet
英文DG421-DG425.pdfRev 1; 03/1994
订购型号
型号状况推荐替代产品封装温度RoHS/无铅
DG425AK停止供货CDIP(N),;16引脚;173.5mm²-55°C至+125°CRoHS/无铅:否
DG425C/D停止供货DICE SALES,;NA引脚;DICE;参考数据资料
DG425CJ停止供货PDIP(N),;16引脚;158.4mm²0°C至+70°CRoHS/无铅:否
DG425CY停止供货SOIC(N),;16引脚;61.9mm²0°C至+70°CRoHS/无铅:否
DG425CY-T停止供货N.SO;16引脚0°C至+70°C参考数据资料
DG425DJ停止供货PDIP(N),;16引脚;158.4mm²-40°C至+85°CRoHS/无铅:否
DG425DK停止供货参考数据资料
DG425DN停止供货PLCC,;20引脚;100.6mm²-40°C至+85°CRoHS/无铅:否
DG425DN-T停止供货PLCC;20引脚-40°C至+85°C参考数据资料
DG425DY停止供货SOIC(N),;16引脚;61.9mm²-40°C至+85°CRoHS/无铅:否
型号状况推荐替代产品封装:类型 引脚 占位面积封装图 编码/变更 *温度RoHS/无铅?
DG425DY-T停止供货N.SO;16引脚-40°C至+85°C参考数据资料
DG421-DG425.pdf DG423
DG421-DG425.pdf DG425