MAX214
Programmable DTE/DCE,
+5V RS-232 Transceiver
______________________________________________________________________________________ 11
PARAMETER CONDITIONS
Driver Output
Resistance
-2V < V
OUT
< +2V
Transition Rate on
Driver Output
V.28
Instantaneous
Slew Rate, Max
3kΩ to 7kΩ load
300Ω
100mA
30V/µs
+5.0V to +15V
-5.0V to -15V
3kΩ to 7kΩ load
3kΩ ≤ R
L
≤ 7kΩ,
C
L
≤ 2500pF
EIA/TIA-232E 4% of the period
EIA/TIA-232E, V.28
SPECIFICATIONS
Driver Output
Voltage
0 Level
1 Level
Output Level, Max
Driver Output
Short-Circuit
Current, Max
1ms or 3% of the
period
DB9 PIN DB25 PIN NAME SYMBOL FUNCTION
1 8 DCD Handshake from DCE
2 3 Receive Data RxD Data from DCE
3 2 Transmit Data Data from DTE
4 20 Data Terminal Ready DTR Handshake from DTE
5 7 Signal Ground GND
6 6 Data Set Ready DSR Handshake from DCE
7 4 Request to Send RTS Handshake from DTE
8 5 Clear to Send CTS Handshake from DCE
9 22 Ring Indicator RI Handshake from DCE
Reference point for signals
Received Line Signal Detector, sometimes
called Data Carrier Detect
TxD
Table 3. Summary of EIA/TIA-232E, V.28
Specifications
Table 4. DB9/DB25 Cable Connections Commonly Used for EIA/TIA-232 and V.24
Asynchronous Interfaces
Data Rate
3kΩ ≤ R
L
≤ 7kΩ,
C
L
≤ 2500pF
Up to 20kbits/sec
No load ±25V
-3.0V to -15V
±25V
+3.0V to +15V
Receiver Input
Voltage
0 Level
1 Level
Input Level, Max
___________________Chip Topography
TRANSISTOR COUNT: 694;
SUBSTRATE CONNECTED TO V+.
TC
0.178"
4.52mm
0.156"
3.96mm
RB
RC
DTE/DCE
TRB
RTB
HI-Z C2+ C1+
SHDN
TB
RTA
TRA
RE
RDC
RA
TA
C2- C1-
RDTC
RRE GND
V-
V+
V
CC
RTC
TRC
