MAX212 Datasheet, PDF (1/12 Pages) Maxim Integrated Products – Programmable DTE/DCE, +5V RS-232 Transceiver

19-0199; Rev 1; 8/95
Programmable DTE/DCE,
+5V RS-232 Transceiver
_______________General Description
The MAX214 +5V RS-232 transceiver provides a com-
plete, 8-line, software-configurable, DTE or DCE port
RS-232 interface. Tx, Rx, RTS, CTS, DTR, DSR, DCD,
and RI circuits can be configured as either Data
Terminal Equipment (DTE) or Data Circuit-Terminating
Equipment (DCE) using the DTE/DCE control pin. The
MAX214 eliminates the need to swap cables when
switching between DTE and DCE configurations.
________________________Applications
AT-Compatible Laptop Computers
AT-Compatible Desktop Computers
Modems, Printers, and Other Peripherals
__________Typical Operating Circuit
+5V
1µF
16
27 _C1+
V_CC
1µF
15
1µF
V+
28 _C1-
1
C2+
MAX214
1µF
2
14
V-
C2-
1µF
5 TA
DTE
TRA 9
6 RA
25 TB
23 RB
24 TC
22 RC
DCE
7 RDC
DTE
8 RE
DCE
RTA 10
DTE
DTE
TRB 20
DCE
RTB 19
DTE
DTE TRC 18
DCE
RTC 17
DTE
DCE _{RDTC 11}
DTE
RRE 12
21
DTE/DCE
26
SHDN
3
HI-Z
GND
13
____________________________Features
o Eliminates Null Modem Cables
o Programmable DTE or DCE Serial Port
o 1µF Charge-Pump Capacitors
o 116kbps Data Rate—Guaranteed
o 20µA Shutdown Mode
o Receivers Active in Shutdown
______________Ordering Information
PART
MAX214CPI
MAX214CWI
MAX214C/D
MAX214EPI
MAX214EWI
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
28 Plastic DIP
28 Wide SO
Dice*
28 Plastic DIP
28 Wide SO
* Dice are specified at TA = +25°C.
__________________Pin Configuration
TOP VIEW
C2+ 1
C2- 2
HI-Z 3
N.C. 4
TA 5
RA 6
RDC 7
RE 8
TRA 9
RTA 10
RDTC 11
RRE 12
GND 13
V- 14
MAX214
DIP/SO
28 C1-
27 C1+
26 SHDN
25 TB
24 TC
23 RB
22 RC
21 DTE/DCE
20 TRB
19 RTB
18 TRC
17 RTC
16 V_CC
15 V+
________________________________________________________________ Maxim Integrated Products 1
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