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MAX218CPP+ Datasheet

  • MAX218CPP+

  • RS-232 Transceiver IC; Device Type:Line Driver/Receiver; No....

  • 8頁

  • Maxim   Maxim

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1.8V to 4.25V-Powered,
True RS-232 Dual Transceiver
TIMING CHARACTERISTICS
(Circuit of Figure 1, V
CC
= 1.8V to 4.25V, C1 = 0.47碌F, C2 = C3 = C4 = 1碌F, L1 = 15碌H, T
A
= T
MIN
to T
MAX
, unless otherwise noted.
Typical values are at V
CC
= 3.0V, T
A
= +25擄C.)
PARAMETER
Data Rate
Receiver Output Enable Time
Receiver Output Disable Time
Transmitter Output Enable Time
Transmitter Output Disable Time
Receiver Propagation Delay
Transmitter Propagation Delay
t
ER
t
DR
t
ET
t
DT
t
PHLR
t
PLHR
t
PHLT
t
PLHT
150pF load
150pF load
2500pF
||
3k鈩?load
2500pF
||
3k鈩?load
T
A
= +25擄C, V
CC
= 3.0V, R
L
= 3k鈩?to 7k鈩?
C
L
= 50pF to 2500pF, measured from
+3V to -3V or -3V to +3V
3.0
SYMBOL
CONDITIONS
1000pF
||
3k鈩?load each transmitter,
150pF load each receiver
MIN
120
90
200
140
500
290
260
1.9
1.8
700
700
2.7
2.7
30
300
500
450
TYP
MAX
UNITS
kbps
ns
ns
碌s
ns
ns
碌s
MAX218
Transition Region Slew Rate
V/碌s
______________________________________________________________Pin Description
PIN
1
2
3
NAME
LX
N.C.
鈥?鈥?/div>
鈥?鈥?/div>
SHDN
Inductor/Diode Connection Point
Not internally connected
Shutdown Control. Connect to V
CC
for normal operation. Connect to GND to shut down the
power supply and to disable the drivers. Receiver status is not changed by this control.
Receiver Output Enable Control. Connect to V
CC
for normal operation. Connect to GND to
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 1碌F. See
Capacitor
Selection
section.
Transmitter Inputs
Receiver Outputs; swing between GND and V
CC.
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
FUNCTION
4
5, 17, 20
6
7, 8
9, 10
11, 12
13, 14
15
16, 18
19
EN
GND
V
CC
T1IN, T2IN
R1OUT, R2OUT
R2IN, R1IN
T2OUT, T1OUT
V-
C1-, C1+
V+
_______________________________________________________________________________________
3

MAX218CPP+ 產(chǎn)品屬性

  • Lead (SnPb) Finish for COTSObsolescence Mitigation Program

  • 18

  • 集成電路 (IC)

  • 接口 - 驅(qū)動(dòng)器，接收器，收發(fā)器

  • -

  • 收發(fā)器

  • 2/2

  • RS232

  • 1.8 V ~ 4.25 V

  • 通孔

  • 20-DIP（0.300"，7.62mm）

  • 20-PDIP

  • 管件

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