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PDF MAX3180 Data sheet ( Hoja de datos )
| Número de pieza | MAX3180 | |
| Descripción | +3V to +5.5V / 1.5Mbps RS-232 Receivers in SOT23-5 | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MAX3180 (archivo pdf) en la parte inferior de esta página. Total 6 Páginas | ||
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19-1444; Rev 1; 7/99
+3V to +5.5V, 1.5Mbps
RS-232 Receivers in SOT23-5
General Description
The MAX3180–MAX3183 are single RS-232 receivers in
a SOT23-5 package for space- and cost-constrained
applications requiring minimal RS-232 communications.
These devices minimize power and heat dissipation by
consuming only 0.5µA supply current from a +3.0V to
+5.5V supply voltage. They guarantee true RS-232 per-
formance up to a 1.5Mbps data rate.
The MAX3180/MAX3182 feature a three-state TTL/
CMOS receiver output that is controlled by an EN logic
input. The MAX3181/MAX3183 feature an INVALID out-
put that indicates valid RS-232 signals at the receiver
input for applications requiring automatic system wake-
up. The MAX3180/MAX3181 receivers have a standard
inverting output, while the MAX3182/MAX3183 receivers
have a noninverting output.
Diagnostic Ports
Telecommunications
Networking Equipment
Applications
Set-Top Boxes
Digital Cameras
Hand-Held Equipment
Features
o Tiny SOT23-5 Package
o 0.5µA Supply Current
o 1.5Mbps Guaranteed Data Rate
o Meet EIA/TIA-232 and V.28/V.24 Specifications
Down to VCC = +3.0V
o INVALID Output Indicates Valid RS-232 Signal at
Receiver Input (MAX3181/MAX3183)
o Three-State TTL/CMOS Receiver Output
(MAX3180/MAX3182)
o Noninverting RS-232 Output (MAX3182/MAX3183)
Ordering Information
PART
TEMP. RANGE
PIN-
PACKAGE
MAX3180EUK-T -40°C to +85°C 5 SOT23-5
MAX3181EUK-T -40°C to +85°C 5 SOT23-5
MAX3182EUK-T -40°C to +85°C 5 SOT23-5
MAX3183EUK-T -40°C to +85°C 5 SOT23-5
TOP
MARK
ADKF
ADKG
ADKH
ADKI
Selector Guide
PART
MAX3180
MAX3181
MAX3182
MAX3183
PACKAGE
SOT23-5
SOT23-5
SOT23-5
SOT23-5
SUPPLY
CURRENT (µA)
0.5
0.5
0.5
0.5
EN
INPUT
—
—
INVALID
OUTPUT
—
—
INVERTING
ROUT
—
—
NONINVERTING
ROUT
—
—
Pin Configurations/Functional Diagrams
TOP VIEW
EN (INVALID) 1
GND 2
MAX3180
MAX3181
5k
5 VCC
EN (INVALID) 1
GND 2
MAX3182
MAX3183
5k
5 VCC
ROUT 3
4 RIN
ROUT 3
4 RIN
SOT23-5
( ) ARE FOR MAX3181/MAX3183 ONLY.
SOT23-5
________________________________________________________________ Maxim Integrated Products 1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
1 page  
+3V to +5.5V, 1.5Mbps
RS-232 Receivers in SOT23-5
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.
5V
RIN
0
VOH
ROUT
VOL
50% 50%
tPLH
50%
tPHL
50%
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 VCC bypass capacitor
is adequate for power-supply decoupling. Connect the
bypass capacitor as close to the IC as possible.
Chip Information
Figure 1. Receiver Propagation-Delay Timing
TRANSISTOR COUNT: 41
+2.7V
+0.3V
0
-0.3V
-2.7V
VALID SIGNALS (INVALID = 1)
INDETERMINATE
INVALID SIGNALS (INVALID = 0)
INDETERMINATE
VALID SIGNALS (INVALID = 1)
Figure 2. Input Levels and INVALID Timing
RECEIVER
INPUT
VOLTAGE
(V)
VCC
INVALID
OUTPUT
(V)
0
tINVL
INVALID
REGION
tINVH
_______________________________________________________________________________________ 5
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet MAX3180.PDF ] | |
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