參數資料
型號: MAX3238CAI+T
廠商: Maxim Integrated Products
文件頁數: 11/12頁
文件大?。?/td> 0K
描述: IC TXRX RS-232 TRUE 28-SSOP
產品培訓模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝: 2,000
類型: 線路收發(fā)器
驅動器/接收器數: 5/3
規(guī)程: RS232
電源電壓: 3 V ~ 5.5 V
安裝類型: 表面貼裝
封裝/外殼: 28-SSOP(0.209",5.30mm 寬)
供應商設備封裝: 28-SSOP
包裝: 帶卷 (TR)
When using the minimum required capacitor values,
make sure the capacitor value does not degrade
excessively with temperature. If in doubt, use capaci-
tors with a larger nominal value. The capacitor’s equiv-
alent series resistance (ESR), which usually rises at low
temperatures, influences the amount of ripple on V+
and V-.
MAX3238
+3.0V to +5.5V, 1A, up to 250kbps, True
RS-232 Transceiver with AutoShutdown Plus
8
_______________________________________________________________________________________
Table 3. Required Minimum Capacitance
Values
RECEIVER
INPUT
LEVELS
-2.7V
-0.3V
+2.7V
+0.3V
0V
INDETERMINATE
INVALID HIGH
INVALID LOW
INVALID HIGH
INDETERMINATE
Figure 4a. Receiver Positive/Negative Thresholds for INVALID
VCC
0
V+
V-
VCC
0
INVALID
OUTPUT
* ALL RECEIVERS/TRANSMITTERS INACTIVE
** ANY ONE RECEIVER/TRANSMITTER BECOMES ACTIVE
FORCEON = GND, FORCEOFF = VCC
TRANSMITTER
INPUTS
VOLTAGE
RECEIVER
INPUTS
VOLTAGE
TRANSMITTER
OUTPUTS
VOLTAGE
tAUTOSHDN
INVALID
REGION
***
tWU
INVL
tAUTOSHDN
Figure 4b. AutoShutdown Plus and INVALID Timing Diagram
1
0.22
3.0 to 5.5
0.33
0.047
4.5 to 5.5
C2, C3, C4, CBYPASS
(F)
0.22
0.1
3.15 to 3.6
0.22
3.0 to 3.6
C1
(F)
VCC
(V)
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