SP3070E Datasheet, PDF (7/20 Pages) Exar Corporation – ±15kV ESD-Protected, 3.3V, 1/8 Load, Failsafe RS-485/RS422 Transceivers

DRIVER SWITCHING CHARACTERISTICS
Unless otherwise noted Vcc=+3.3±0.3V, ambient temperature Tmin < Ta < Tmax. Typical values are at Vcc = 3.3,
ambient temperature Ta = +25ºC
SP3076E, SP3077E & SP3078E Receiver Driver Characteristics
DRIVER CHARACTERISTICS:
Conditions
Min. Typ. Max. Unit
Data Signaling Rate
Duty Cycle 40 to 60%
16
Mbps
Driver Propagation Delay (tPHL, tPLH)
Driver Output Rise/Fall Time (tR, tF)
RL = 54Ω, CL = 50pF,
Figure 2 & 4
50 ns
15 ns
Driver Differential Skew (tPLH – tPHL)
8 ns
Driver Enable to Output High (tZH)
Driver Enable to Output Low (tZL)
Driver Disable from Output High (tHZ)
RL = 500Ω, CL = 50pF,
Figure 4 & 5
150 ns
150 ns
100 ns
Driver Disable from Output Low (tLZ)
100 ns
Driver Enable from Shutdown to Output
High (t ) ZH(SHDN)
Figure 4
1800 ns
Driver Enable from Shutdown to Output
Low (t ) ZL(SHDN)
Figure 5
1800 ns
Time to Shutdown (tSHDN)
50 200 600 ns
RECEIVER SWITCHING CHARACTERISTICS
Unless otherwise noted Vcc=+3.3±0.3V, ambient temperature Tmin < Ta < Tmax. Typical values are at Vcc = 3.3,
ambient temperature Ta = +25ºC
SP3076E, SP3077E & SP3078E Receiver Switching Characteristics
RECEIVER CHARACTERISTICS:
Conditions
Min. Typ. Max. Unit
Data Signaling Rate
Receiver Propagation Delay (tPLH, tPHL)
Propagation Delay Skew (tPLH, tPHL)
Duty Cycle 40 to 60%
Cl=15pF, Figure 6 & 7,
-40 to +85 ºC
16
Mbps
40 75 ns
8 ns
Receiver Enable to Output High (tZH)
Figure 8
Receiver Enable to Output Low (tZL)
Figure 8
Receiver Disable from Output High (tHZ) Figure 8
Receiver Disable from Output Low (tLZ)
Figure 8
Receiver Enable from Shutdown to Output
High
Figure 8
Receiver Enable from Shutdown to Output
Low
Figure 8
Time to Shutdown (tSHDN)
60 ns
60 ns
50 ns
50 ns
1800 ns
1800 ns
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