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參數(shù)資料
| 型號： | MAX3181EUK-T |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 通用總線功能 |
| 英文描述： | 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors |
| 中文描述： | LINE RECEIVER, PDSO5 |
| 封裝： | SOT-23, 5 PIN |
| 文件頁數(shù)： | 5/6頁 |
| 文件大?。?/td> | 136K |
| 代理商： | MAX3181EUK-T |
Detailed Description
The MAX3180–MAX3183 are EIA/TIA-232 and V.28/
V.24 communications receivers that convert RS-232
signals to CMOS logic levels. The devices operate on a
supply voltage of +3V to +5.5V and have a 1.5Mbps
data rate capability. They achieve a 0.5μA typical sup-
ply current. The MAX3180/MAX3182 have a receiver
enable control (
EN
), while the MAX3181/MAX3183 con-
tain a signal invalid output (
INVALID
). The MAX3180/
MAX3181 invert the ROUT signal relative to RIN. The
MAX3182/MAX3183 are not inverted. The devices
come in SOT23-5 packages.
Signal Invalid Detector
If no valid signal levels appear on RIN for 30μs (typ),
INVALID
goes low. This event typically occurs if the RS-
232 cable is disconnected or if the connected peripher-
al transmitter is turned off.
INVALID
goes high when a
valid level is applied to the RS-232 receiver input.
Figure 2 shows the input levels and timing diagram for
INVALID
operation.
Enable Input
The MAX3180/MAX3182 feature an enable input. Drive
EN
high to force ROUT into a high-impedance state. In
this state, the devices ignore incoming RS-232 signals.
Drive
EN
low for normal operation.
Power-Supply Decoupling
In most circumstances, a 0.1μF V
CC
bypass capacitor
is adequate for power-supply decoupling. Connect the
bypass capacitor as close to the IC as possible.
M
+3V to +5.5V, 1.5Mbps
RS-232 Receivers in SOT23-5
_______________________________________________________________________________________
5
50%
50%
50%
0
RIN
5V
ROUT
50%
t
PLH
t
PHL
V
OL
V
OH
Figure 1. Receiver Propagation-Delay Timing
VALID SIGNALS (INVALID = 1)
INVALID SIGNALS (INVALID = 0)
VALID SIGNALS (INVALID = 1)
R
-2.7V
-0.3V
+2.7V
+0.3V
0
INDETERMINATE
INDETERMINATE
0
V
CC
t
INVL
INVALID
REGION
RECEIVER
INPUT
VOLTAGE
(V)
INVALID
OUTPUT
(V)
t
INVH
Figure 2. Input Levels and
INVALID
Timing
Chip Information
TRANSISTOR COUNT: 41
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX3180EUK-T | 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors |
| MAX3182EUK-T | 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors |
| MAX3181EEUK-T | 【15kV ESD-Protected, 0.5レA, +3V to +5.5V, 1.5Mbps RS-232 Receivers in SOT23-5 |
| MAX3182EEUK-T | 【15kV ESD-Protected, 0.5レA, +3V to +5.5V, 1.5Mbps RS-232 Receivers in SOT23-5 |
| MAX3180-MAX3183 | 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors |
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