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MAX221ECUE Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX221ECUE Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 12 page 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. General Description 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. Applications Maintenance/Diagnostic Ports Industrial Systems Telecommunications Set-Top Boxes Features o Single RS-232 Transceiver in a Small 16-Pin TSSOP o 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 o Latchup Free o 1µA Supply Current o AutoShutdown Saves Power without Changes to BIOS o Guaranteed 250kbps Data Rate ±15kV ESD-Protected, +5V, 1µA, Single RS-232 Transceiver with AutoShutdown ________________________________________________________________ Maxim Integrated Products 1 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 EN FORCEOFF VCC GND TOUT FORCEON TIN INVALID ROUT TOP VIEW MAX221E TSSOP/SSOP C1+ V+ C2- C1- C2+ V- RIN MAX221E FORCEON EN 12 1 ROUT 9 FORCEOFF 16 INVALID 10 GND 14 TIN 11 C2- 6 C2+ 5 C1- 4 C1+ 2 RIN 8 TOUT 13 V- 7 V+ 3 VCC VCC C4 0.1 µF C3 0.1 µF 15 C1 0.1 µF C2 0.1 µF CBYPASS 0.1 µF +5V TO POWER- MANAGEMENT UNIT CAPACITORS MAY BE POLARIZED OR UNPOLARIZED. 5k Typical Operating Circuit 19-1527; Rev 0; 8/99 PART MAX221ECUE MAX221ECAE MAX221EEUE 40°C to +85°C 0°C to +70°C 0°C to +70°C TEMP. RANGE PIN-PACKAGE 16 TSSOP 16 SSOP 16 TSSOP Pin Configuration Ordering Information AutoShutdown is a trademark of Maxim Integrated Products. MAX221EEAE 40°C to +85°C 16 SSOP |
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