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PDF MAX3180E Data sheet ( Hoja de datos )
| Número de pieza | MAX3180E | |
| Descripción | 15kV ESD-Protected / 0.5A / +3V to +5.5V / 1.5Mbps RS-232 Receivers in SOT23-5 | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
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19-1479; Rev 1; 7/99
±15kV ESD-Protected, 0.5µA, +3V to +5.5V,
1.5Mbps RS-232 Receivers in SOT23-5
General Description
The MAX3180E–MAX3183E single RS-232 receivers in
a SOT23-5 package are designed for space- and cost-
constrained applications requiring minimal RS-232
communications. The receiver inputs are protected to
±15kV using IEC 1000-4-2 Air-Gap Discharge, to ±8kV
using IEC 1000-4-2 Contact Discharge, and to ±15kV
per the Human Body Model, ensuring compliance with
international standards.
The devices minimize power and heat dissipation by
consuming only 0.5µA supply current from a +3.0V to
+5.5V supply, and they guarantee true RS-232 perfor-
mance up to a 1.5Mbps data rate. The MAX3180E/
MAX3182E feature a three-state TTL/CMOS receiver
output that is controlled by an EN logic input. The
MAX3181E/MAX3183E feature an INVALID output that
indicates valid RS-232 signals at the receiver input for
applications requiring automatic system wake-up. The
MAX3182E/MAX3183E have a noninverting output,
while the MAX3180E/MAX3181E have a standard
inverting output.
Diagnostic Ports
Telecommunications
Networking Equipment
Set-Top Boxes
Digital Cameras
Hand-Held Equipment
Applications
Features
o Tiny SOT23-5 Package
o ESD-Protected RS-232 Input
±15kV—Human Body Model
±8kV—IEC 1000-4-2, Contact Discharge
±15kV—IEC 1000-4-2, Air-Gap Discharge
o 0.5µA Supply Current
o 1.5Mbps Guaranteed Data Rate
o Meets 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 (MAX3181E/MAX3183E)
o Three-State TTL/CMOS Receiver Output
(MAX3180E/MAX3182E)
o Noninverting RS-232 Output
(MAX3182E/MAX3183E)
Ordering Information
PART
TEMP. RANGE
PIN-
PACKAGE
MAX3180EEUK-T -40°C to +85°C
MAX3181EEUK-T -40°C to +85°C
MAX3182EEUK-T -40°C to +85°C
5 SOT23-5
5 SOT23-5
5 SOT23-5
MAX3183EEUK-T -40°C to +85°C 5 SOT23-5
TOP
MARK
ACHB
ACHC
ACHD
ACHE
Pin Configurations/Functional Diagrams appear at end of
data sheet.
PART
MAX3180E
MAX3181E
MAX3182E
MAX3183E
ESD
PROTECTION
(kV)
±15
±15
±15
±15
PACKAGE
SOT23-5
SOT23-5
SOT23-5
SOT23-5
SUPPLY
CURRENT
(µA)
0.5
0.5
0.5
0.5
EN
INPUT
—
—
INVALID
OUTPUT
—
—
Selector Guide
INVERTING
ROUT
—
—
NON-
INVERTING
ROUT
—
—
________________________________________________________________ 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  
±15kV ESD-Protected, 0.5µA, +3V to +5.5V,
1.5Mbps RS-232 Receivers in SOT23-5
+2.7V
+0.3V
0
-0.3V
-2.7V
VALID SIGNALS
INDETERMINATE
INVALID SIGNALS
INDETERMINATE
VALID SIGNALS
RECEIVER
INPUT
VOLTAGE
(V)
VCC
INVALID
OUTPUT
(V)
0
tINVL
INVALID
REGION
tINVH
Figure 2. Input Levels and INVALID Timing
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
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 dia-
gram for INVALID operation.
Enable Input
The MAX3180E/MAX3182E feature an enable input
(EN). Drive EN high to force ROUT into a high-imped-
ance state. In this state, the devices ignore incoming
RS-232 signals. Pull EN low for normal operation.
ESD Protection
As with all Maxim devices, ESD protection structures
are incorporated on all pins to protect against ESD
encountered during handling and assembly. The
receiver inputs of the MAX3180E–MAX3183E have extra
protection against static electricity. Maxim’s engineers
have developed state-of-the-art structures enabling
these pins to withstand ESD up to ±15kV without dam-
age or latchup. The receiver inputs of the MAX3180E–
MAX3183E are characterized for protection to the fol-
lowing limits:
• ±15kV using the Human Body Model
• ±8kV using the Contact Discharge method specified
in IEC 1000-4-2
• ±15kV using the Air-Gap Discharge method speci-
fied in IEC 1000-4-2
Human Body Model
Figure 3 shows the Human Body Model, and Figure 4
shows the current waveform it generates when dis-
charged into a low impedance. This model consists of
RC
1MΩ
CHARGE-CURRENT
LIMIT RESISTOR
HIGH-
VOLTAGE
DC
SOURCE
Cs
100pF
RD
1500Ω
DISCHARGE
RESISTANCE
STORAGE
CAPACITOR
DEVICE
UNDER
TEST
Figure 3. Human Body ESD Test Model
IP 100%
90%
AMPERES
36.8%
10%
0
0
tRI
Ir PEAK-TO-PEAK RINGING
(NOT DRAWN TO SCALE)
TIME
tDL
CURRENT WAVEFORM
Figure 4. Human Body Model Current Waveform
a 100pF capacitor charged to the ESD voltage of inter-
est, and then discharged into the test device through a
1.5kΩ resistor.
_______________________________________________________________________________________ 5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet MAX3180E.PDF ] | |
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