SP3508 Datasheet, PDF (18/33 Pages) Sipex Corporation – Rugged 3.3V, 20Mbps, 8 Channel Multiprotocol Transceiver with Programmable DCE/DTE and Termination Resistors

Output
Under
Test _CL
500Ω
S₁
V_CC
S₂
Figure 33. Driver Timing Test Load Circuit
Receiver
Output
Test Point
1KΩ
S₁
V_CC
C_RL
1KΩ
S₂
Figure 34. Receiver Timing Test Load Circuit
DRIVER ^+3V
INPUT _0V
DRIVER
A
OUTPUT _B
DIFFERENTIAL V_O⁺
OUTPUT 0V
V_B – V_A ^VO^–
f > 10MHz; t_R < 5ns; t_F < 5ns
1.5V
t_PLH
V_O ^1/2VO
t_PHL
t_DPLH
t_DPHL
t_R
t_{SKEW = |} t_{DPLH -} t_{DPHL |}
Figure 35. Driver Propagation Delays
1.5V
1/2V_O
t_F
Mx or Tx_Enable +3V
0V
A, B
A, B
5V
V_OL
V_OH
0V
f = 1MHz; t_R ≤ 10ns; t_F ≤ 10ns
1.5V
t_ZL
2.3V
Output normally LOW
2.3V
t_ZH
Output normally HIGH
Figure 36. Driver Enable and Disable Times
1.5V
t_LZ
0.5V
0.5V
t_HZ
A–B
V_0D2⁺
V_0D2^–
V_OH
RECEIVER OUT
V_OL
t_{SKEW = |} t_{PHL -} t_{PLH |}
t_PLH
f > 10MHz; t_R < 5ns; t_F < 5ns
0V
INPUT
OUTPUT
(VOH - VOL)/2
t_PHL
0V
(VOH - VOL)/2
Figure 37. Receiver Propagation Delays
Date: 06/14/04
SP3508 Enhanced WAN Multi–Mode Serial Transceiver
18
© Copyright 2004 Sipex Corporation