DS96172_15 Datasheet, PDF (4/13 Pages) Texas Instruments – RS-485/RS-422 Quad Differential Line Drivers

DS96172, DS96174
DS96172 - Obsolete
DS96174 - Not Recommended For New Designs
SNLS390D – JUNE 1998 – REVISED APRIL 2013
Switching Characteristics
V_CC = 5V, T_A = 25°C
Symbol
Parameter
t_DD
Differential Output Delay Time
t_TD
Differential Output Transition Time
t_PLH
Propagation Delay Time, Low-to-High Level
Output
t_PHL
Propagation Delay Time, High-to-Low Level
Output
t_PZH
Output Enable Time to High Level
t_PZL
Output Enable Time to Low Level
t_PHZ
Output Disable Time from High Level
t_PLZ
Output Disable Time from Low Level
Conditions
R_L = 60Ω,See Figure 4
R_L = 27Ω,See Figure 5
R_L = 110Ω,See Figure 6
R_L = 110Ω, See Figure 7
R_L = 110Ω, See Figure 6
R_L = 110Ω, See Figure 7
Parameter Measurement Information^(1)(2)(3)(4)
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Min
Typ
Max
Units
15
25
ns
15
25
ns
12
20
ns
12
20
ns
30
45
ns
30
45
ns
25
35
ns
30
45
ns
Figure 3. Differential and Common Mode Output Voltage
(1) The input pulse is supplied by a generator having the following characteristics: PRR = 1.0 MHz, duty cycle = 50%, t_r ≤ 5.0 ns, t_f ≤ 5.0 ns,
Z_O = 50Ω.
(2) C_L includes probe and jig capacitance.
(3) DS96172 with active high and active low Enables is shown here. DS96174 has active high Enable only.
(4) To test the active low Enable E of DS96172, ground E and apply an inverted waveform to E. DS96174 has active high Enable only.
4
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