MAX218EAP-T Maxim Integrated, MAX218EAP-T Datasheet - Page 3

• Manufacturer Part Number: MAX218EAP-T
• Description: RS-232 Interface IC
• Manufacturer: Maxim Integrated
• Series: MAX218r

Specifications of MAX218EAP-T

• Data Rate: 120 Kbps
• Operating Supply Voltage: 3 V
• Supply Current: 3 mA
• Operating Temperature Range: 0 C to + 70 C
• Mounting Style: SMD/SMT
• Function: Transceiver
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Number Of Drivers: 2
• Number Of I/os: 8
• Number Of Receivers: 2
• Propagation Delay Time Ns: 2.7 us, 0.7 us
• Shutdown: Yes

TIMING CHARACTERISTICS
(Circuit of Figure 1, V
Typical values are at V
______________________________________________________________Pin Description
Data Rate
Receiver Output Enable Time
Receiver Output Disable Time
Transmitter Output Enable Time
Transmitter Output Disable Time
Receiver Propagation Delay
Transmitter Propagation Delay
Transition Region Slew Rate
5, 17, 20
11, 12
13, 14
16, 18
9, 10
PIN
7, 8
15
19
1
2
3
4
6
PARAMETER
R1OUT, R2OUT
T2OUT, T1OUT
R2IN, R1IN
T1IN, T2IN
C1-, C1+
NAME
S
—
GND
_______________________________________________________________________________________
CC
N.C.
V
H
EN
V+
LX
—
V-
CC
CC
D
—
= 1.8V to 4.25V, C1 = 0.47µF, C2 = C3 = C4 = 1µF, L1 = 15µH, T
N
–
= 3.0V, T
A
SYMBOL
Inductor/Diode Connection Point
Not internally connected
Shutdown Control. Connect to V
power supply and to disable the drivers. Receiver status is not changed by this control.
Receiver Output Enable Control. Connect to V
force the receiver outputs into high-Z state.
Ground. Connect all GND pins to ground.
Supply Voltage Input; 1.8V to 4.25V. Bypass to GND with at least 1µF. See Capacitor
Selection section.
Transmitter Inputs
Receiver Outputs; swing between GND and V
Receiver Inputs
Transmitter Outputs; swing between V+ and V-.
Negative Supply generated on-board
Terminals for Negative Charge-Pump Capacitor
Positive Supply generated on-board
= +25°C.)
t
t
t
t
PHLR
PLHR
PHLT
PLHT
t
t
t
t
DR
ER
DT
ET
1000pF
150pF load each receiver
150pF load
150pF load
2500pF
2500pF
T
C
+3V to -3V or -3V to +3V
A
L
= +25°C, V
= 50pF to 2500pF, measured from
True RS-232 Dual Transceiver
||
||
||
3kΩ load each transmitter,
3kΩ load
3kΩ load
CC
CONDITIONS
= 3.0V, R
CC
1.8V to 4.25V-Powered,
for normal operation. Connect to GND to shut down the
L
= 3kΩ to 7kΩ,
FUNCTION
CC.
CC
for normal operation. Connect to GND to
A
= T
MIN
MIN
120
3.0
to T
MAX
TYP
200
140
500
290
260
1.9
1.8
, unless otherwise noted.
90
MAX
300
500
450
700
700
2.7
2.7
30
UNITS
kbps
V/µs
ns
ns
µs
ns
ns
µs
3