參數資料
型號: MAX384CWN+T
廠商: Maxim Integrated Products
文件頁數: 2/12頁
文件大?。?/td> 0K
描述: IC MUX CMOS DUAL-4CH LV 18-SOIC
產品培訓模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝: 1,000
類型: 多路復用器
電路: 4 x 1:1
獨立電路: 2
電壓電源: 雙電源
電源電壓: ±3 V ~ 18 V
工作溫度: 0°C ~ 70°C
安裝類型: 表面貼裝
封裝/外殼: 18-SOIC(0.295",7.50mm 寬)
供應商設備封裝: 18-SOIC W
包裝: 帶卷 (TR)
MAX382/MAX384
Low-Voltage, 8-Channel/Dual 4-Channel
Multiplexers with Latchable Inputs
10
______________________________________________________________________________________
VGEN
GND
WR
CL
100pF
VOUT
-5V
V-
V+
RGEN
VOUT
EN
ON
OFF
VOUT
VOUT IS THE MEASURED VOLTAGE ERROR DUE TO
CHARGE INJECTION. THE CHARGE IN COULOMBS IS Q = CL x VO
+5V
N0_
IN
+2.4V
3V
A0, A1, (A2)
COM
RS
MAX382
MAX384
Figure 7. Charge Injection (VCTE)
GND
WR
35pF
VOUT
-5V
V-
V+
VO
VOUT
+3V
+1.5V
0V
RS
tOFF (RS)
50%
0.8VO
+5V
EN
RS
1k
+5V
A0, A1,
(A2)
N01–
N08
COM, COMB
LOGIC
INPUT
N01
+2.4V
MAX382
Figure 6. Reset Turn-Off Time (tOFF(RS))
Operation with Supply Voltages
Other than ±5V
Using supply voltages less than ±5V reduces the analog
signal range. The MAX382/MAX384 muxes operate with
±3V to ±8V bipolar supplies or with a +2.7V to +16.5V
single supply. Connect V- to GND when operating with a
single supply. Both devices can also operate with unbal-
anced supplies, such as +10V and -5V. The
Typical
Operating Characteristics graphs show typical on-resis-
tance with ±3V, ±5V, +3V and +5V supplies. (Switching
times increase by a factor of two or more for operation at
+5V or below.)
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 8). 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 supply.
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