SP338EER1-0A Datasheet, PDF (8/25 Pages) Exar Corporation – RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION

SP338E
RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION
TIMING CHARACTERISTICS
REV. 1.0.0
UNLESS OTHERWISE NOTED:
V_CC = +3.3V ±5% or +5.0V ±5%, C1-C4 = 0.1µF; T_A = T_MIN to T_MAX. Typical values are at V_CC = 3.3V, T_A = +25°C.
SYMBOL
PARAMETERS
MIN. TYP. MAX. UNITS
CONDITIONS
ALL MODES
t_ENABLE Enable from Shutdown
t_SHUTDOWN Enable to Shutdown
1000
ns
1000
ns
RS-232, DATA RATE = 250kbps (SLEW = Vcc), ONE TRANSMITTER SWITCHING
Maximum Data Rate
250
kbps R_L = 3kΩ, C_L = 1000pF
t_RHL, t_RLH Receiver Propagation Delay
⏐t_RHL-t_RLH⏐ Receiver Propagation Delay Skew
100
ns
C_L = 150pF, Figure 13
100 ns
t_DHL, t_DLH Driver Propagation Delay
⏐t_DHL-t_DLH⏐ Driver Propagation Delay Skew
1400
600
ns _{RL = 3kΩ, CL = 2500pF,}
ns ^{Figure 14}
t_SHL, t_SLH
Transition Region Slew Rate from
+3.0V to -3.0V or -3.0V to +3.0V
4
t_SHL, t_SLH
Transition Region Slew Rate from
+3.0V to -3.0V or -3.0V to +3.0V
6
V_CC = 3.3V, R_L = 3kΩ to 7kΩ,
30 V/µs C_L = 150pF to 2500pF,
Figure 14
V_CC = 3.3V, R_L = 3kΩ to 7kΩ,
30 V/µs C_L = 150pF to 2500pF,
T_A = 25°C, Figure 14
RS-232, DATA RATE = 1Mbps (SLEW = 0V), ONE TRANSMITTER SWITCHING
Maximum Data Rate
1
Mbps R_L = 3kΩ, C_L = 250pF
t_RHL, t_RLH Receiver Propagation Delay
⏐t_RHL-t_RLH⏐ Receiver Propagation Delay Skew
100
ns
C_L = 150pF, Figure 13
100 ns
t_DHL, t_DLH Driver Propagation Delay
⏐t_DHL-t_DLH⏐ Driver Propagation Delay Skew
300
ns _{RL = 3kΩ, CL = 1000pF,}
150 ns ^{Figure 14}
t_SHL, t_SLH
Transition Region Slew Rate from
+3.0V to -3.0V or -3.0V to +3.0V
15
t_SHL, t_SLH
Transition Region Slew Rate from
+3.0V to -3.0V or -3.0V to +3.0V
24
V_CC = 3.3V, R_L = 3kΩ to 7kΩ,
150 V/µs C_L = 150pF to 1000pF,
Figure 14
V_CC = 3.3V, R_L = 3kΩ to 7kΩ,
150 V/µs C_L = 150pF to 1000pF,
T_A = 25°C, Figure 14
8