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參數(shù)資料
| 型號： | DS1225Y-200 |
| 廠商： | DALLAS SEMICONDUCTOR |
| 元件分類： | Static RAM |
| 英文描述： | 8K X 8 NON-VOLATILE SRAM MODULE, 200 ns, PDIP28 |
| 文件頁數(shù)： | 11/12頁 |
| 文件大?。?/td> | 125K |
| 代理商： | DS1225Y-200 |
MAX381/MAX383/MAX385
Precision, Low-Voltage Analog Switches
8
_______________________________________________________________________________________
__________Applications Information
Operation with Supply Voltages
Other than ±5V
The MAX381/MAX383/MAX385 switches operate with
±3.0V to ±8V bipolar supplies and a +3V to +15V single
supply. In either case, analog signals ranging from V+ to
V- can be switched. The
Typical Operating Characteristics
graphs show the typical on-resistance variation with ana-
log signal and supply voltage. The usual on-resistance
temperature coefficient is 0.5%/°C (typ).
Overvoltage Protection
Proper power-supply sequencing is recommended for
all CMOS devices. Do not exceed the absolute maxi-
mum ratings, because stresses beyond the listed rat-
ings can cause permanent damage to the devices.
Always sequence V+ on first, then V-, followed by the
logic inputs, NO, or COM. If power-supply sequencing
is not possible, add two small signal diodes (D1, D2) in
series with supply pins for overvoltage protection
(Figure 1). Adding diodes reduces the analog signal
range to one diode drop below V+ and one diode drop
above V-, but does not affect the devices’ low switch
resistance and low leakage characteristics. Device
operation is unchanged, and the difference between
V+ and V- should not exceed 17V. These protection
diodes are not recommended when using a single 3V
supply.
______________________________________________________________Pin Description
COM
V-
V+
NO
* INTERNAL PROTECTION DIODES
D2
D1
-5V
+5V
MAX381
MAX383
MAX385
*
Figure 1. Overvoltage Protection Using Two External Blocking
Diodes
1, 8
COM_
Analog Switch Common Terminal
2–7, 12
N.C.
Not Internally Connected
9, 16
NO_
Analog Switch Normally Open Terminal
—
NC_
Analog Switch Normally Closed Terminal
10, 15
IN_*
Logic Level Input (Normally Low)
11
V+
Analog Signal and Logic Positive Supply Input
14
V-
Analog Signal Negative Supply Input
NAME
FUNCTION
MAX381
1, 3, 6, 8
2, 7, 12
9, 16
4, 5
10, 15
11
14
MAX383
1, 3, 6, 8
2, 7, 12
4, 5, 9, 16
—
10, 15
11
14
MAX385
PIN
13
GND
Logic Negative Supply Input (Ground)
13
* IN1 controls COM1 and COM3; IN2 controls COM2 and COM4.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1225Y-200+ | 功能描述:NVRAM 64k Nonvolatile SRAM RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)總線寬度:8 bit 存儲容量:1024 Kbit 組織:128 K x 8 接口類型:Parallel 訪問時(shí)間:70 ns 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 工作電流:85 mA 最大工作溫度:+ 70 C 最小工作溫度:0 C 封裝 / 箱體:EDIP 封裝:Tube |
| DS1225Y-200IND | 功能描述:NVRAM 64k Nonvolatile SRAM RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)總線寬度:8 bit 存儲容量:1024 Kbit 組織:128 K x 8 接口類型:Parallel 訪問時(shí)間:70 ns 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 工作電流:85 mA 最大工作溫度:+ 70 C 最小工作溫度:0 C 封裝 / 箱體:EDIP 封裝:Tube |
| DS1225Y-200-IND | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:64K Nonvolatile SRAM |
| DS1225Y-200IND+ | 功能描述:NVRAM RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)總線寬度:8 bit 存儲容量:1024 Kbit 組織:128 K x 8 接口類型:Parallel 訪問時(shí)間:70 ns 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 工作電流:85 mA 最大工作溫度:+ 70 C 最小工作溫度:0 C 封裝 / 箱體:EDIP 封裝:Tube |
| DS1227 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:KickStarter Chip |
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