max221euet Maxim Integrated Products, Inc., max221euet Datasheet
max221euet
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max221euet Summary of contents
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Rev 0; 8/99 +5V, 1µA, Single RS-232 Transceiver General Description The MAX221 is a +5V-powered, single transmit/receive RS-232 and V.28 communications interface with auto- matic shutdown/wake-up features and high data rate capabilities. The MAX221 achieves a low 1µA supply ...
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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 Voltages TOUT ..............................................(V- ...
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Single RS-232 Transceiver 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 Swing ...
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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 -2 -4 ...
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Single RS-232 Transceiver I SHDN + BYPASS C1 C1- MAX221 5 C2 0.1 F C2- 11 TIN 9 ROUT FORCEOFF FORCEON GND ...
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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 Don’t care ...
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Single RS-232 Transceiver 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) 0 ...
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Single RS-232 Transceiver with AutoShutdown 5V/div TIN = GND 5V/div TIN = V 50 s/div Figure 5. Transmitter Output Exiting Shutdown or Powering Up +5V 0 C1+ C1 C1- MAX221 C2+ C2 C2- TOUT TIN ...