MAXIM MAX3181EUK-T

19-1444; Rev 1; 7/99
+3V to +5.5V, 1.5Mbps
RS-232 Receivers in SOT23-5
Features
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 performance 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 output that indicates valid RS-232 signals at the receiver
input for applications requiring automatic system wakeup. The MAX3180/MAX3181 receivers have a standard
inverting output, while the MAX3182/MAX3183 receivers
have a noninverting output.
♦ Tiny SOT23-5 Package
♦ 0.5µA Supply Current
♦ 1.5Mbps Guaranteed Data Rate
♦ Meet EIA/TIA-232 and V.28/V.24 Specifications
Down to VCC = +3.0V
♦ INVALID Output Indicates Valid RS-232 Signal at
Receiver Input (MAX3181/MAX3183)
♦ Three-State TTL/CMOS Receiver Output
(MAX3180/MAX3182)
♦ Noninverting RS-232 Output (MAX3182/MAX3183)
Ordering Information
Applications
Diagnostic Ports
Set-Top Boxes
Telecommunications
Digital Cameras
Networking Equipment
Hand-Held Equipment
TEMP. RANGE
PINPACKAGE
MAX3180EUK-T -40°C to +85°C
5 SOT23-5
ADKF
MAX3181EUK-T -40°C to +85°C
5 SOT23-5
ADKG
MAX3182EUK-T -40°C to +85°C
5 SOT23-5
ADKH
MAX3183EUK-T -40°C to +85°C
5 SOT23-5
ADKI
PART
TOP
MARK
Selector Guide
PART
PACKAGE
SUPPLY
CURRENT (µA)
EN
INPUT
INVALID
OUTPUT
INVERTING
ROUT
NONINVERTING
ROUT
MAX3180
SOT23-5
0.5
✓
—
✓
—
✓
—
MAX3181
SOT23-5
0.5
—
✓
MAX3182
SOT23-5
0.5
✓
—
—
✓
MAX3183
SOT23-5
0.5
—
✓
—
✓
Pin Configurations/Functional Diagrams
TOP VIEW
EN (INVALID)
1
MAX3180
MAX3181
5
VCC
EN (INVALID)
1
5k
MAX3182
MAX3183
5
VCC
4
RIN
5k
GND 2
GND 2
ROUT 3
4
SOT23-5
RIN
ROUT 3
SOT23-5
( ) ARE FOR MAX3181/MAX3183 ONLY.
________________________________________________________________ Maxim Integrated Products
1
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MAX3180–MAX3183
General Description
MAX3180–MAX3183
+3V to +5.5V, 1.5Mbps
RS-232 Receivers in SOT23-5
ABSOLUTE MAXIMUM RATINGS
VCC to GND ..............................................................-0.3V to +6V
RIN to GND ..........................................................................±25V
EN, ROUT, INVALID to GND ......................-0.3V to (VCC + 0.3V)
Continuous Power Dissipation (TA = +70°C)
SOT23-5 (derate 7.1mW/°C above +70°C)...................571mW
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10sec) .............................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VCC = +3.0V to +5.5V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5.0V and TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
DC CHARACTERISTICS
Supply Voltage
VCC
Supply Current
ICC
3.0
VCC = 3.3V or 5V, RIN = VCC or GND, no load
0.5
5.5
V
5
µA
0.8
V
LOGIC INPUT (EN)
Logic Threshold Low
VIL
Logic Threshold High
VIH
Leakage Current
IEN
VCC = 3.3V
2.0
VCC = 5.0V
2.4
V
±0.01
±1.0
µA
0.4
V
LOGIC OUTPUT
INVALID Output Voltage Low
VIOL
ISINK = 1.6mA
INVALID Output Voltage High
VIOH
ISOURCE = 1.0mA
VCC 0.6
V
RECEIVER INPUT
Input Voltage Range
VRIN
Input Threshold Low
VITL
Input Threshold High
VITH
Input Hysteresis
-25
25
VCC = 3.3V
0.6
1.2
VCC = 5.0V
0.8
1.5
V
VCC = 3.3V
1.5
2.4
VCC = 5.0V
1.8
2.7
VHYST
300
Positive threshold
VITOH
RIN Threshold to INVALID
Output Low
VITOL
-0.3
Input Resistance
RRIN
3
Negative threshold
V
mV
2.7
RIN Threshold to INVALID
Output High
V
-2.7
V
0.3
V
5
7
kΩ
±0.05
±10
µA
0.4
V
RECEIVER OUTPUT
Output Leakage Current
IROUT
Receiver disabled
Output Voltage Low
VOL
ISINK = 1.6mA
Output Voltage High
VOH
ISOURCE = 1.0mA
2
VCC 0.6
VCC 0.1
_______________________________________________________________________________________
V
+3V to +5.5V, 1.5Mbps
RS-232 Receivers in SOT23-5
(VCC = +3.0V to +5.5V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5.0V and TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
TIMING CHARACTERISTICS
Maximum Data Rate
CL = 50pF
1.5
Mbps
Receiver Propagation Delay,
High-to-Low
tPHL
RIN to ROUT; CL = 150pF
0.15
µs
Receiver Propagation Delay,
Low-to-High
tPLH
RIN to ROUT; CL = 150pF
0.15
µs
tRS
| tPHL - tPLH |, Figure 1
Receiver Skew
50
ns
Receiver Output Enable Time
tROE
200
ns
Receiver Output Disable Time
tROD
200
ns
Receiver Positive or Negative
Threshold to INVALID High
tINVH
250
ns
Receiver Positive or Negative
Threshold to INVALID Low
tINVL
30
µs
Note 1: Specifications are 100% tested at TA = +25°C. Limits over temperature are guaranteed by design.
Typical Operating Characteristics
(VCC = +5V, TA = +25°C, unless otherwise noted.)
SUPPLY CURRENT vs. DATA RATE
330
0.5
310
VCC = 5V
0.4
tINVH (ns)
SUPPLY CURRENT (mA)
MAX3180-02
RL = 50kΩ
CL = 100pF
0.6
RIN TO INVALID HIGH vs. SUPPLY VOLTAGE
350
MAX3180-01
0.7
0.3
VCC = 3.3V
290
270
0.2
250
0.1
0
230
0
0.5
1.0
DATA RATE (Mbps)
1.5
3.0
3.5
4.0
4.5
5.0
5.5
VCC (V)
_______________________________________________________________________________________
3
MAX3180–MAX3183
ELECTRICAL CHARACTERISTICS (continued)
Typical Operating Characteristics (continued)
(VCC = +5V, TA = +25°C, unless otherwise noted.)
MAX3180
ENABLE ASSERTION TO ROUT RESPONSE
RIN TO INVALID LOW vs. SUPPLY VOLTAGE
55
MAX3180-04
20V
MAX3180-03
60
10V
RIN
50
tINVL (µs)
MAX3180–MAX3183
+3V to +5.5V, 1.5Mbps
RS-232 Receivers in SOT23-5
0
-10V
45
5V
ROUT
40
0
35
5V
ENABLE
30
0
VCC = 5.0V
RL = 50kΩ
CL = 100pF
25
3.0
3.5
4.0
4.5
5.0
500ns/div
5.5
VCC (V)
Pin Description
NAME
PIN
FUNCTION
MAX3180
MAX3181
MAX3182
MAX3183
EN
–
EN
–
–
INVALID
–
INVALID
GND
GND
GND
GND
ROUT
ROUT
–
–
–
–
ROUT
ROUT
4
RIN
RIN
RIN
RIN
Receiver Input
5
VCC
VCC
VCC
VCC
Supply Voltage
1
2
Receiver Output Enable
Output of the Valid Input Detector
Ground
Inverting Receiver Output
3
4
Noninverting Receiver Output
_______________________________________________________________________________________
+3V to +5.5V, 1.5Mbps
RS-232 Receivers in SOT23-5
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 supply current. The MAX3180/MAX3182 have a receiver
enable control (EN), while the MAX3181/MAX3183 contain 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 RS232 cable is disconnected or if the connected peripheral 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.
5V
RIN
50%
50%
0
t PLH
VOH
ROUT
VOL
50%
t PHL
50%
Chip Information
TRANSISTOR COUNT: 41
Figure 1. Receiver Propagation-Delay Timing
RECEIVER INPUT LEVELS
VALID SIGNALS (INVALID = 1)
+2.7V
INDETERMINATE
RECEIVER
INPUT
VOLTAGE
(V)
INVALID
REGION
+0.3V
0
INVALID SIGNALS (INVALID = 0)
-0.3V
INDETERMINATE
-2.7V
VALID SIGNALS (INVALID = 1)
VCC
INVALID
OUTPUT
(V)
0
tINVL
tINVH
Figure 2. Input Levels and INVALID Timing
_______________________________________________________________________________________
5
MAX3180–MAX3183
Detailed Description
+3V to +5.5V, 1.5Mbps
RS-232 Receivers in SOT23-5
SOT5L.EPS
MAX3180–MAX3183
Package Information
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
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© 1999 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.