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參數(shù)資料
| 型號(hào)： | MAX3325 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Octal LVDS Receiver 38-TSSOP -40 to 85 |
| 中文描述： | 3V、雙路RS-232收發(fā)器，帶有LCD電源及對(duì)比度控制器 |
| 文件頁(yè)數(shù)： | 5/8頁(yè) |
| 文件大?。?/td> | 109K |
| 代理商： | MAX3325 |
__________Applications Information
Operation with Supply Voltages
Other than ±15V
o
The main limitation of supply voltages other than ±15V is
a reduction in the analog signal range. The MAX333A
operates with ±5V to ±20V bipolar supplies. The
Typical Operating Characteristics and graphs show typ-
ical on resistance for ±15V, ±10V, ±5 supplies.
Switching times increase by a factor of two or more for
±5V operation. The MAX333A can operate from +10V
to +24V unipolar supplies. It can be powered from a
single +10V to +24V supply, as well as from unbalanced
supplies such as +24V and -5V. Connect V- to 0V when
operating with a single supply.
Overvoltage Protection
Proper power-supply sequencing is recommended for
all CMOS devices. It is important not to exceed the
absolute maximum ratings because stresses beyond
the listed ratings may cause permanent damage to the
devices. Always sequence V+ on first, followed by VL,
V-, and logic inputs. If power-supply sequencing is not
possible, add two small signal diodes in series with the
supply pins (Figure 1). Adding the diodes reduces the
analog signal range to 1V below V+ and 1V below V-,
but low switch resistance and low leakage characteris-
tics are unaffected.
M
Precision, Quad, SPDT, CMOS Analog Switch
_______________________________________________________________________________________
5
PIN
FUNCTION
15
16
Not Internally Connected
Positive Power Supply
6
Ground
5
Negative Power Supply
4, 7, 14, 17
Normally Closed Switches
1, 10, 11, 20
2, 9, 12, 19
3, 8, 13, 18
Logic-Level Inputs
Normally Open Switches
Common Switch Poles
NAME
N.C.
V+
GND
V-
NC1-NC4
IN1-IN4
NO1-NO4
COM1-COM4
_____________________Pin Description
t
R
< 20ns
t
F
< 20ns
50%
0V
+10V
LOGIC
INPUT
V-
-15V
300
COM_
GND
(REPEAT TEST FOR IN2, IN3, AND IN4.)
V
IN
+10V
IN_
NO_
50%
t
OPEN
50%
50%
50%
50%
3V
t
OPEN
t
ON
t
OFF
t
ON
t
OFF
0V
-10V
V
COM
+15V
V+
NC_
-10V
SWITCH OUTPUT
Figure 2. Switching-Time Test Circuit
V
g
NO_
( OR NC_)
V+
COM_
V-
Figure 1. Overvoltage Protection Using Blocking Diodes
______________________________________________Test Circuits/Timing Diagrams
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