SP3070E Datasheet, PDF (6/20 Pages) Exar Corporation – ±15kV ESD-Protected, 3.3V, 1/8 Load, Failsafe RS-485/RS422 Transceivers

DRIVER SWITCHING CHARACTERISTICS
Unless otherwise noted V_CC = +3.3 ±0.3V, ambient temperature T_MIN < T_A < T_MAX. Typical values are at V_CC = 3.3,
ambient temperature T_A = +25ºC.
SP3073E, SP3074E & SP3075E Driver Switching Characteristics
DRIVER CHARACTERISTICS:
Conditions
Min. Typ. Max. Unit
Data Signaling Rate
Duty Cycle 40 to 60%
500
Kbps
Driver Propagation Delay (tPHL, tPLH)
Driver Output Rise/Fall Time (tR, tF)
180
RL = 54Ω, CL = 50pF,
Figure 2 & 3
200
800 ns
800 ns
Driver Differential Skew (tPLH – tPHL)
100 ns
Driver Enable to Output High (tZH)
2500 ns
Driver Enable to Output Low (tZL)
Driver Disable from Output High (tHZ)
RL = 500Ω, CL = 50pF,
Figure 4 & 5
2500 ns
100 ns
Driver Disable from Output Low (tLZ)
100 ns
Driver Enable from Shutdown to Output
High (t ) ZH(SHDN)
Figure 4
4500 ns
Driver Enable from Shutdown to Output
Low (t ) ZL(SHDN)
Figure 5
4500 ns
Time to Shutdown (tSHDN)
50 200 600 ns
RECEIVER SWITCHING CHARACTERISTICS
Unless otherwise noted V_CC = +3.3 ±0.3V, ambient temperature T_MIN < T_A < T_MAX. Typical values are at V_CC = 3.3,
ambient temperature T_A = +25ºC.
SP3073E, SP3074E & SP3075E Receiver Switching Characteristics
RECEIVER CHARACTERISTICS:
Conditions
Min. Typ. Max. Unit
Data Signaling Rate
Duty Cycle 40 to 60% 500
Kbps
Receiver Propagation Delay (tPLH, tPHL)
Propagation Delay Skew (tPLH, tPHL)
Cl=15pF, Figure 6 & 7
200 ns
30 ns
Receiver Enable to Output High (tZH)
Figure 8
50 ns
Receiver Enable to Output Low (tZL)
Figure 8
50 ns
Receiver Disable from Output High (tHZ) Figure 8
50 ns
Receiver Disable from Output Low (tLZ)
Figure 8
50 ns
Receiver Enable from Shutdown to Output
High
Figure 8
4000 ns
Receiver Enable from Shutdown to Output
Low
Figure 8
4000 ns
Time to Shutdown (tSHDN)
50 200 600 ns
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
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SP3070E-SP3078E_100_061109