SN75174
QUADRUPLE DIFFERENTIAL LINE DRIVER
SLLS039B – OCTOBER 1980 – REVISED MAY 1995
SYMBOL EQUIVALENTS
DATA SHEET PARAMETER
VO
|VOD1|
|VOD2|
|VOD3|
∆|V
OD|
VOC
∆|V
OC|
IOS
IO
| |Vt| – |Vt| |
|Vos|
|Vos – Vos|
|Isa|,|Isb|
|Ixa|,|Ixb|
Iia,Iib
EIA/TIA-422-B
Voa, Vob
Vo
Vt (RL = 100
Ω)
RS-485
Voa, Vob
Vo
Vt (RL = 54
Ω)
Vt (Test Termination)
Measurement 2)
| |Vt| – |Vt| |
|Vos|
|Vos – Vos|
PARAMETER MEASUREMENT INFORMATION
RL
2
VOD2
RL
2
VOC
Figure 1. Differential and Common-Mode Output Voltages
3V
Input
RL =
54
Ω
50
Ω
3V
td(OD)
90%
50%
10%
1.5 V
1.5 V
0V
Generator
(see Note A)
CL = 50 pF Output
(see Note B)
td(OD)
90%
50%
10%
~
2.5 V
~
2.5 V
Output
tt(OD)
TEST CIRCUIT
VOLTAGE WAVEFORMS
tt(OD)
NOTES: A. The input pulse is supplied by a generator having the following characteristics: tr
≤
5 ns, tf
≤
5 ns, PRR
≤
1 MHz, duty cycle = 50%,
ZO = 50
Ω.
B. CL includes probe and stray capacitance.
Figure 2. Differential-Output Test Circuit and Voltage Waveforms
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
5
TI [ TEXAS INSTRUMENTS ]
