MAX240CMH-T Maxim Integrated, MAX240CMH-T Datasheet - Page 30

no-image

MAX240CMH-T

Manufacturer Part Number
MAX240CMH-T
Description
RS-232 Interface IC
Manufacturer
Maxim Integrated
Series
MAX220, MAX222, MAX223, MAX225, MAX230, MAX231, MAX232, MAX232A, MAX233, MAX233A, MAX234, MAX235, MAX236, MAX237, MAX238, MAX239, MAX240, MAX241, MAX242, MAX243, MAX244, MAX245, MAX246, MAX247, MAX248, MAX249r
Datasheet

Specifications of MAX240CMH-T

Data Rate
120 Kbps
Operating Supply Voltage
5 V
Supply Current
15 mA
Operating Temperature Range
0 C to + 70 C
Mounting Style
SMD/SMT
Function
Transceiver
Maximum Operating Temperature
+ 70 C
Minimum Operating Temperature
0 C
Number Of Drivers
5
Number Of I/os
20
Number Of Receivers
5
Propagation Delay Time Ns
10 us
Shutdown
Yes
MAX220–MAX249
MAX220–MAX249
30
+5V-Powered, Multichannel RS-232
Drivers/Receivers
Figure 21. MAX245 Pin Configuration and Typical Operating Circuit
TOP VIEW
MAX245 FUNCTIONAL DESCRIPTION
10 RECEIVERS
8 TRANSMITTTERS
2 CONTROL PINS
5 A-SIDE RECEIVERS (R A5 ALWAYS ACTIVE)
5 B-SIDE RECEIVERS (R B5 ALWAYS ACTIVE)
4 A-SIDE TRANSMITTERS
1 RECEIVER ENABLE (ENR)
1 TRANSMITTER ENABLE (ENT)
RA5OUT
RA4OUT
RA3OUT
RA2OUT
RA1OUT
TA1OUT
TA2OUT
TA3OUT
TA4OUT
RA1IN
RA2IN
RA3IN
RA4IN
RA5IN
TA1IN
TA2IN
TA3IN
TA4IN
GND
ENR
10
11
12
13
14
15
16
17
18
19
20
1
2
3
4
5
6
7
8
9
+
MAX245
DIP
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
V
ENT
TB1IN
TB2IN
TB3IN
TB4IN
RB5OUT
RB4OUT
RB3OUT
RB2OUT
RB1OUT
RB1IN
RB2IN
RB3IN
RB4IN
RB5IN
TB1OUT
TB2OUT
TB3OUT
TB4OUT
CC
16
17
18
19
11 RA1IN
10 RA1OUT
12 RA2IN
13 RA3IN
14 RA4IN
15 RA5IN
2
3
4
5
1
9 RA2OUT
8 RA3OUT
7 RA4OUT
6
TA1OUT
TA1IN
TA2OUT
TA2IN
TA3OUT
TA3IN
TA4OUT
TA4IN
RA5OUT
ENR
5kΩ
5kΩ
5kΩ
5kΩ
5kΩ
1μF
+5V
+5V
+5V
+5V
400kΩ
400kΩ
400kΩ
400kΩ
GND
+5V
V
CC
20
40
+5V
+5V
+5V
+5V
5kΩ
5kΩ
5kΩ
5kΩ
5kΩ
TB1OUT
TB2OUT
TB3OUT
TB4OUT
RB1OUT
RB2OUT
RB3OUT
RB4OUT
RB5OUT
TB1IN
TB2IN
TB3IN
TB4IN
RB1IN
RB2IN
RB3IN
RB4IN
RB5IN
ENT
Maxim Integrated
24
38
23
37
22
36
21
35
39
29
30
28
31
27
32
26
33
25
34