MAX214 データシートの表示（PDF） - Maxim Integrated
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MAX214 Datasheet PDF : 12 Pages
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Programmable DTE/DCE,
+5V RS-232 Transceiver
Table 3. Summary of EIA/TIA-232E, V.28
Specifications
PARAMETER
CONDITIONS
Driver Output
Voltage
0 Level
1 Level
Output Level, Max
3kΩ to 7kΩ load
3kΩ to 7kΩ load
No load
Data Rate
Receiver Input
Voltage
0 Level
1 Level
Input Level, Max
3kΩ ≤ RL ≤ 7kΩ,
CL ≤ 2500pF
Instantaneous
Slew Rate, Max
Driver Output
Short-Circuit
Current, Max
3kΩ ≤ RL ≤ 7kΩ,
CL ≤ 2500pF
V.28
Transition Rate on
Driver Output
EIA/TIA-232E
EIA/TIA-232E, V.28
SPECIFICATIONS
+5.0V to +15V
-5.0V to -15V
±25V
Up to 20kbits/sec
+3.0V to +15V
-3.0V to -15V
±25V
30V/µs
100mA
1ms or 3% of the
period
4% of the period
Driver Output
Resistance
-2V < VOUT < +2V 300Ω
___________________Chip Topography
C2- C1-
HI-Z C2+
TA
SHDN
C1+
TB
TC
RA
RB
RDC
RC 0.178"
4.52mm
RE
DTE/DCE
TRA
TRB
RTA
RTB
RRE
RDTC
GND V+
V- VCC
0.156"
3.96mm
TRANSISTOR COUNT: 694;
SUBSTRATE CONNECTED TO V+.
TRC
RTC
Table 4. DB9/DB25 Cable Connections Commonly Used for EIA/TIA-232 and V.24
Asynchronous Interfaces
DB9 PIN
1
2
3
4
5
6
7
8
9
DB25 PIN
8
3
2
20
7
6
4
5
22
NAME
Received Line Signal Detector, sometimes
called Data Carrier Detect
Receive Data
Transmit Data
Data Terminal Ready
Signal Ground
Data Set Ready
Request to Send
Clear to Send
Ring Indicator
SYMBOL
DCD
RxD
TxD
DTR
GND
DSR
RTS
CTS
RI
FUNCTION
Handshake from DCE
Data from DCE
Data from DTE
Handshake from DTE
Reference point for signals
Handshake from DCE
Handshake from DTE
Handshake from DCE
Handshake from DCE
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