ST485ECDR ,LOW POWER RS-485/RS422 TRANSCEIVERAbsolute Maximum Ratings are those values beyond which damage to the device may occur. Functional o ..
ST485ECN ,LOW POWER RS-485/RS422 TRANSCEIVERapplications).±15KV electrostatic discharge (H.B.M.) (ESD)shocks, without latcup. These parts conta ..
ST485ERBD ,LOW POWER RS-485/RS422 TRANSCEIVERAPPLICATIONS■ -7V TO 12V COMMON MODE INPUT VOLTAGE RANGE■ DRIVER MAINTAINS HIGH IMPEDANCE IN 3-STAT ..
ST485ERBDR ,LOW POWER RS-485/RS422 TRANSCEIVERAbsolute Maximum Ratings are those values beyond which damage to the device may occur. Functional o ..
ST485ERBN ,LOW POWER RS-485/RS422 TRANSCEIVERST485ER±15KV ESD PROTECTED, LOW POWERRS-485/RS-422 TRANSCEIVER ■ LOW QUIESCENT CURRENT: 300μA■ DES ..
ST485ERCD ,LOW POWER RS-485/RS422 TRANSCEIVERAPPLICATIONS■ -7V TO 12V COMMON MODE INPUT VOLTAGE RANGE■ DRIVER MAINTAINS HIGH IMPEDANCE IN 3-STAT ..
STM8S208S6T6C ,Mainstream Performance line 8-bit MCU with 32 Kbytes Flash, 24 MHz CPU, integrated EEPROMfeatures 19Table 5. Legend/abbreviations for pinout table . 28Table 6. Pin description ..
STM8S903F3M6 ,Mainstream Application specific line 8-bit MCU with 8 Kbytes Flash, 16 MHz CPU, integrated EEPROMFeaturesCommunicationsinterfacesCoreUARTwithclockoutputforsynchronous16MHzadvancedSTM8corewithHarva ..
STM8S903K3T6C ,Mainstream Application specific line 8-bit MCU with 8 Kbytes Flash, 16 MHz CPU, integrated EEPROMSTM8S903K3STM8S903F316MHzSTM8S8-bitMCU,upto8KbytesFlash,1KbyteRAM,640bytesEEPROM,10-bitADC,2timers, ..
STM8S903K3T6CTR ,Mainstream Application specific line 8-bit MCU with 8 Kbytes Flash, 16 MHz CPU, integrated EEPROMfeatures......9Table2.PeripheralclockgatingbitassignmentsinCLK_PCKENR1/2registers.......14Table3.TI ..
STM8S903K3T6CTR ,Mainstream Application specific line 8-bit MCU with 8 Kbytes Flash, 16 MHz CPU, integrated EEPROMFeaturesCommunicationsinterfacesCoreUARTwithclockoutputforsynchronous16MHzadvancedSTM8corewithHarva ..
STM915-16 ,RF POWER MODULE GSM MOBILE APPLICATIONSELECTRICAL SPECIFICATIONS (T 25 C, V , V 8.0 Vdc; V , V 12.5 Vdc)case = S1 S3 = S2 S4 =Symbol Pa ..
ST485EBD-ST485EBDR-ST485EBN-ST485ECD-ST485ECDR-ST485ECN-ST485EXD-ST485EXDR
LOW POWER RS-485/RS422 TRANSCEIVER
1/12January 2003 LOW QUIESCENT CURRENT: 300μA DESIGNED FOR RS-485 INTERFACE
APPLICATIONS -7V TO 12V COMMON MODE INPUT
VOLTAGE RANGE DRIVER MAINTAINS HIGH IMPEDANCE IN
3-STATE OR WITH THE POWER OFF 70mV TYPICAL INPUT HYSTERESIS 30ns PROPAGATION DELAYS, 5ns SKEW OPERATE FROM A SINGLE 5V SUPPLY CURRENT LIMITING AND THERMAL
SHUTDOWN FOR DRIVER OVERLOAD
PROTECTION ESD PROTECTION:
±15KV (H.B.M.)
±8KV (IEC-1000-4-2 CONTACT
DISCHARGE) ALLOWS UP TO 64 TRANSCEIVERS ON
THE BUS
DESCRIPTIONThe ST485E is al low power transceiver for
RS-485 and RS-422 communication. Each driver
output and receiver input is protected against
±15KV electrostatic discharge (H.B.M.) (ESD)
shocks, without latcup. These parts contain one
driver and one receiver in half duplex
configuration.
This transceiver draw 300μA (typ.) of supply
current when unloaded or fully loaded with
disabled drivers.
It operates from a single 5V supply.
Driver is short-circuit current limited and is
protected against excessive power dissipation by
thermal shutdown circuitry that place the driver
outputs into a high-impedance state.
The ST485E is designed for bi-directional data
communications on multipoint bus transmission
line (half-duplex applications).
ORDERING CODES
ST485E±15KV ESD PROTECTED, LOW POWER
RS-485/RS-422 TRANSCEIVER
ST485E2/12
PIN CONFIGURATION
PIN DESCRIPTION
TRUTH TABLE (DRIVER) X= Don’t Care; Z=High Impedance
TRUTH TABLE (RECEIVER) X= Don’t Care; Z=High Impedance
ABSOLUTE MAXIMUM RATINGS Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is
not implied.
ST485E3/12
ESD PERFORMANCE: TRANSMITTER OUTPUTS, RECEIVER INPUTS
DC ELECTRICAL CHARACTERISTICS CC = 5V ± 5%, TA = T MIN to T MAX , unless otherwise specified. Typical values are referred to TA = 25°C)
(See Note 1)
Note 1: All currents into device pins are positive; all cuttents out of device pins are negative; all voltages are referenced to device ground
unless specified.
Note 2: Supply current specification is valid for loaded transmitters when VDE = 0V
Note 3: Applies to peak current. See typical Operating Characteristics.
ST485E4/12
DRIVER SWITCHING CHARACTERISTICS (VCC = 5V ± 5%, TA = TMIN to TMAX , unless otherwise specified. Typical values are referred to TA = 25°C)
(See Note 1)
Note 1: All currents into device pins are positive; all cuttents out of device pins are negative; all voltages are referenced to device ground
unless specified.
RECEIVER SWITCHING CHARACTERISTICS CC = 5V ± 5%, TA = T MIN to T MAX , unless otherwise specified. Typical values are referred to TA = 25°C)
(See Note 1)
Note 1: All currents into device pins are positive; all cuttents out of device pins are negative; all voltages are referenced to device ground
unless specified.
ST485E5/12
TEST CIRCUITS AND TYPICAL CHARACTERISTICS
ST485E6/12
Figure 5 : Driver Propagation Delay
Figure 6 : Driver Enable and Disable Time
