DS96172 Datasheet, PDF (4/6 Pages) National Semiconductor (TI) – RS-485/RS-422 Quad Differential Line Drivers

Parameter Measurement Information (Continued)
DS009626-9
FIGURE 4. t_PZH and t_PHZ
DS009626-10
DS009626-12
DS009626-11
FIGURE 5. t_PZL and t_PLZ
Note 8: 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.
Note 9: C_L includes probe and jig capacitance.
Note 10: DS96172 with active high and active low Enables is shown here. DS96174 has active high Enable only.
Note 11: To test the active low Enable E of DS96172, ground E and apply an inverted waveform to E . DS96174 has active high Enable only.
Function Tables
DS96172
Input
A
H
L
H
L
X
Enables
E
E
H
X
H
X
X
L
X
L
L
H
Outputs
Y
Z
H
L
L
H
H
L
L
H
Z
Z
DS96174
Input
Enable
H
H
L
H
X
L
H = High Level
X = Immaterial
L = Low Level
Z = High Impedance (off)
Outputs
Y
Z
H
L
L
H
Z
Z
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