MAX13448EESD+ Maxim Integrated Products, MAX13448EESD+ Datasheet
MAX13448EESD+
Specifications of MAX13448EESD+
Related parts for MAX13448EESD+
MAX13448EESD+ Summary of contents
Page 1
... Slew-Rate Limiting Facilitates Error-Free Data Transmission o 1/8-Unit Load Allows Up to 256 Transceivers on the Bus o -7V to +12V Common-Mode Input Voltage Range o +3.0V to +5.5V Operating Supply Voltage o Available in 14-Pin SO Package PART MAX13448EESD+ + Denotes a lead-free package. Applications Pin Configuration appears at end of data sheet MAX13448E DE ...
Page 2
Fault-Protected Full-Duplex RS-485 Transceiver ABSOLUTE MAXIMUM RATINGS (All voltages reference to GND.) Supply Voltage (V ).............................................................+6V CC Control Input Voltage (RE, DE)...................-0. Driver Input Voltage (DI).............................-0. Receiver Input Voltage (A, B (Note 1)) ................................±80V Driver ...
Page 3
ELECTRICAL CHARACTERISTICS (continued +3.0 to +5.5V MIN MAX PARAMETER SYMBOL RECEIVER Input Current Receiver Differential Threshold Voltage Receiver Input Hysteresis Output High Voltage Output Low Voltage Three-State Output Current at Receiver ...
Page 4
Fault-Protected Full-Duplex RS-485 Transceiver SWITCHING CHARACTERISTICS ( unless otherwise noted. Typical values are MIN MAX PARAMETER SYMBOL Driver Disable Time from Output High Driver Enable Time from t DZH(SHDN) Shutdown ...
Page 5
SWITCHING CHARACTERISTICS ( unless otherwise noted. Typical values are MIN MAX PARAMETER SYMBOL ver E nab Outp ...
Page 6
Fault-Protected Full-Duplex RS-485 Transceiver (V = +3.3V +25°C, unless otherwise noted SUPPLY CURRENT vs. TEMPERATURE 4. LOW HIGH DI = FLOATING 4.15 4.10 4.05 -40 -15 10 ...
Page 7
T = +25°C, unless otherwise noted SINGLE-ENDED DRIVER OUTPUT HIGH VOLTAGE vs. SOURCE CURRENT 3. HIGH DI = HIGH 3.30 3.25 3.20 3.15 3. OUTPUT ...
Page 8
Fault-Protected Full-Duplex RS-485 Transceiver PIN NAME N.C. No Connection. Not internally connected. Connect N.C. to GND or leave it unconnected. Receiver Output. If receiver is enabled and ( ≥ -50mV high; if ...
Page 9
OR V GENERATOR DZH DZH(SHDN) OUT Figure 4. Driver Enable and Disable Times ( GENERATOR DZL DZL(SHDN OUT V OL Figure 5. Driver Enable and Disable ...
Page 10
Fault-Protected Full-Duplex RS-485 Transceiver Figure 6. Receiver Propagation Delays +1.5V -1.5V S1 OPEN S2 CLOSED S3 = +1. OPEN S2 CLOSED S3 = +1. ...
Page 11
Fault-Protected Full-Duplex Detailed Description The MAX13448E ±80V fault-protected RS-485/RS-422 transceiver contains one driver and one receiver. This device features fail-safe circuitry, guaranteeing a logic- high receiver output when the receiver inputs are open or shorted, or when they are ...
Page 12
Fault-Protected Full-Duplex RS-485 Transceiver 1MΩ 1500Ω DISCHARGE CHARGE-CURRENT- RESISTANCE LIMIT RESISTOR HIGH STORAGE VOLTAGE 100pF CAPACITOR DC SOURCE Figure 8a. Human Body ESD Test Model receiver threshold between -50mV and -200mV. If the ...
Page 13
V CC 10μs TIMER SR LATCH TIMER 5kΩ DE 100μA 500μ Figure 9. Simplified Structure of the Driver Enable Pin (DE) Hot-Swap Input Circuitry The enable inputs feature hot-swap capability. At the input there are two NMOS devices, ...
Page 14
... 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. 14 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2008 Maxim Integrated Products 120Ω ...