SLLSFS0 April 2024 THVD4421
PRODUCTION DATA
PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT | ||
---|---|---|---|---|---|---|---|
tRDY | Time from Shutdown to RS-232 ready | MODE1, MODE0 = 00 or floating; SHDN = GND to VIO; rest of logic input pins floating, VCC = 4.5 V to 5.5 V Time from 50% of rising SHDN to charge pump V- supply reaching -8 V; See Figure 6-11 | 0.05 | 0.11 | ms | ||
MODE1, MODE0 = 00 or floating; SHDN = GND to VIO; rest of logic input pins floating, VCC = 3 V to 3.6 V Time from 50% of rising SHDN to charge pump V- supply reaching -5 V; See Figure 6-11 | 0.1 | 0.4 | ms | ||||
tR2_R4 | Time to switch from RS-232 2T2R mode to RS-485 Full duplex mode | L3 = Vio, MODE1 from GND to Vio, MODE0 = Vio; SHDN = DIR = VIO; SLR, TERM_TX, TERM_RX= floating; Time from 50% of MODE1 rising edge to R2 reaching 2V; See Figure 6-12 | 0.04 | 0.1 | µs | ||
tR4_R2 | Time to switch from RS-485 full duplex mode to RS-232 3T5R mode | L3 = Vio, MODE1 from Vio to GND, MODE0 = Vio; SHDN = DIR = VIO; SLR, TERM_TX, TERM_RX= floating; Time from 50% of MODE1 falling edge to R2 reaching 300 mV; See Figure 6-12 | 2 | 2.1 | µs | ||
tLP_RS232 | Time to switch from RS-232 loopback mode to normal RS-232 mode | MODE1 = GND, MODE0 from GND to VIO; SHDN = VIO, L3 = GND; Time from 50% of MODE0 rising edge to L2 50% rising edge, -40 ℃ ≤ TA ≤ 85 ℃; See Figure 6-13 | 2 | 2.4 | µs | ||
tRS232_LP | Time to switch from normal RS-232 mode to RS-232 loopback mode | MODE1 = GND, MODE0 from VIO to GND; SHDN = VIO, L3 = GND; Time from 50% of MODE0 falling edge to L2 50% falling edge, -40 ℃ ≤ TA ≤ 85 ℃; See Figure 6-13 | 2 | 15 | µs | ||
tFHD_RS485 | Time to switch from RS-485 full duplex to half duplex mode | DIR= VIO, MODE1 = VIO; MODE0 from VIO to GND; SHDN = VIO, SLR, TERM_TX, TERM_RX= floating; L3= GND, 10k pull down resistor on L2, Time from 50% of MODE0 falling edge to 50% falling edge on L2; See Figure 6-14 | 0.5 | 1 | µs | ||
tHFD_RS485 | Time to switch from RS-485 half duplex to full duplex mode | DIR= VIO, MODE1 = VIO; MODE0 from GND to VIO ; SHDN = VIO, SLR, TERM_TX, TERM_RX= floating; L3= GND, 10k pull down resistor on L2, Time from 50% of MODE0 rising edge to 50% rising edge on L2; See Figure 6-14 | 0.5 | 1 | µs |