MAX221EEUE-T Maxim Integrated, MAX221EEUE-T Datasheet

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MAX221EEUE-T

Manufacturer Part Number
MAX221EEUE-T
Description
RS-232 Interface IC
Manufacturer
Maxim Integrated
Series
MAX221Er
Datasheet

Specifications of MAX221EEUE-T

Data Rate
250 Kbps
Operating Supply Voltage
5 V
Supply Current
10 mA
Operating Temperature Range
0 C to + 70 C
Mounting Style
SMD/SMT
Function
Transceiver
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Number Of Drivers
1
Number Of I/os
4
Number Of Receivers
1
Propagation Delay Time Ns
0.15 us
Shutdown
Yes
The MAX221E is a +5V powered, single transmit/
receive RS-232 and V.28 communications interface with
automatic shutdown/wake-up features and high data
rate capabilities.
The MAX221E features enhanced electrostatic discharge
(ESD) protection. Both the transmitter output and receiver
input are protected to ±15kV using the IEC 1000-4-2 Air-
Gap Discharge Method, to ±8kV using the IEC 1000-4-2
Contact Discharge Method, and to ±15kV using the
Human Body Model.
The MAX221E achieves a low 1µA supply current with
Maxim’s revolutionary AutoShutdown™ feature.
AutoShutdown saves power without changes to the
existing BIOS or operating system by entering low-
power shutdown mode when the RS-232 cable is dis-
connected or when the transmitter of the connected
peripheral is off. The MAX221E wakes up and drives the
INVALID pin high when an active RS-232 cable is con-
nected, signaling the host that a peripheral is connected
to the communications port.
The MAX221E is available in a 16-pin SSOP package as
well as a 16-pin TSSOP that uses 50% less board space
than a 16-pin SO.
19-1527; Rev 0; 8/99
AutoShutdown is a trademark of Maxim Integrated Products.
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.
TOP VIEW
±15kV ESD-Protected, +5V, 1µA, Single RS-232
Maintenance/Diagnostic Ports
Industrial Systems
Telecommunications
Set-Top Boxes
C1+
C2+
C1-
C2-
RIN
EN
V+
V-
________________________________________________________________ Maxim Integrated Products
1
2
3
4
5
6
7
8
TSSOP/SSOP
MAX221E
General Description
Pin Configuration
16
15
14
13
12
11
10
9
Applications
FORCEOFF
V
GND
TOUT
FORCEON
TIN
INVALID
ROUT
Transceiver with AutoShutdown
CC
MAX221ECUE
MAX221ECAE
MAX221EEUE
MAX221EEAE
C
Single RS-232 Transceiver in a Small 16-Pin TSSOP
ESD Protection for RS-232 I/O Pins
Latchup Free
1µA Supply Current
AutoShutdown Saves Power without Changes
to BIOS
Guaranteed 250kbps Data Rate
BYPASS
0.1 F
0.1 F
0.1 F
±15kV—Human Body Model
±8kV—IEC 1000-4-2, Contact Discharge
±15kV—IEC 1000-4-2, Air-Gap Discharge
C1
C2
PART
+5V
12
11
2
4
5
6
9
1
TIN
C1+
C1-
C2-
C2+
ROUT
EN
FORCEON
Typical Operating Circuit
TEMP. RANGE
40°C to +85°C
40°C to +85°C
0°C to +70°C
0°C to +70°C
Ordering Information
MAX221E
GND
V
CC
14
15
FORCEOFF
INVALID
5k
TOUT 13
CAPACITORS MAY BE
POLARIZED OR UNPOLARIZED.
RIN 8
V+
V-
16 TSSOP
16 SSOP
16 TSSOP
16 SSOP
PIN-PACKAGE
3
7
10
16
Features
V
CC
TO POWER-
MANAGEMENT
UNIT
C3
0.1 F
C4
0.1 F
1

Related parts for MAX221EEUE-T

MAX221EEUE-T Summary of contents

Page 1

... ESD Protection for RS-232 I/O Pins ±15kV—Human Body Model ±8kV—IEC 1000-4-2, Contact Discharge ±15kV—IEC 1000-4-2, Air-Gap Discharge Latchup Free 1µA Supply Current AutoShutdown Saves Power without Changes to BIOS Guaranteed 250kbps Data Rate PART MAX221ECUE MAX221ECAE MAX221EEUE MAX221EEAE Applications +5V C BYPASS ...

Page 2

ESD-Protected, +5V, 1µA, Single RS-232 Transceiver with AutoShutdown ABSOLUTE MAXIMUM RATINGS V ..........................................................................-0. ...............................................................(V V- ...........................................................................-14V to +0.3V Input Voltages TIN ............................................................-0.3V to (V+ + 0.3V) RIN ...................................................................................±30V FORCEON, FORCEOFF, EN ..................-0. Output ...

Page 3

ESD-Protected, +5V, 1µA, Single RS-232 ELECTRICAL CHARACTERISTICS (continued +5V ±10%, C1–C4 = 0.1µ PARAMETER SYMBOL RECEIVER INPUT Input Voltage Range Input Threshold Low Input Threshold High Input Hysteresis Input Resistance TRANSMITTER OUTPUT Output Voltage ...

Page 4

ESD-Protected, +5V, 1µA, Single RS-232 Transceiver with AutoShutdown (V = +5V, 250kbps data rate, 0.1µF capacitors, transmitter loaded with 3k and C CC TRANSMITTER OUTPUT VOLTAGE vs. LOAD CAPACITANCE 20kbps 120kbps 4 250kbps 2 0 250kbps ...

Page 5

ESD-Protected, +5V, 1µA, Single RS-232 I SHDN + BYPASS 0.1 F C1- MAX221E 5 C2 0.1 F C2- 11 TIN 9 ROUT 1 EN INVALID 12 FORCEON ...

Page 6

ESD-Protected, +5V, 1µA, Single RS-232 Transceiver with AutoShutdown Table 1. Output Control Truth Table OPERATION FORCEON STATUS X Shutdown (Forced Off Normal Operation (Forced On Normal Operation (AutoShutdown Shutdown (AutoShutdown ...

Page 7

ESD-Protected, +5V, 1µA, Single RS-232 TRANSMITTER ENABLED, INVALID HIGH +2.7V INDETERMINATE +0.3V AUTOSHUTDOWN, TRANSMITTER DISABLED SUPPLY CURRENT, INVALID LOW -0.3V INDETERMINATE -2.7V TRANSMITTER ENABLED, INVALID HIGH a) RECEIVER INPUT VOLTAGE ( INVALID OUTPUT (V) ...

Page 8

ESD-Protected, +5V, 1µA, Single RS-232 Transceiver with AutoShutdown 1500 C D DISCHARGE CHARGE-CURRENT RESISTANCE LIMIT RESISTOR HIGH STORAGE VOLTAGE 100pF CAPACITOR DC SOURCE Figure 5a. Human Body ESD Test Model I 100 ...

Page 9

ESD-Protected, +5V, 1µA, Single RS-232 __________Applications Information INVALID indicates when an RS-232 signal is present at the receiver input, and therefore when the port is in use. INVALID can be used in alternative shutdown control schemes where it relieves ...

Page 10

ESD-Protected, +5V, 1µA, Single RS-232 Transceiver with AutoShutdown 5V/div 5V/div 5V/div 2 s/div Figure 9. Loopback Test Result at 120kbps ___________________Chip Information TRANSISTOR COUNT: 157 10 ______________________________________________________________________________________ TIN 5V/div 5V/div TOUT ROUT 5V/div Figure 10. Loopback Test Result at ...

Page 11

ESD-Protected, +5V, 1µA, Single RS-232 ______________________________________________________________________________________ Transceiver with AutoShutdown Package Information 11 ...

Page 12

... Maxim reserves the right to change the circuitry and specifications without notice at any time. implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © ...

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