Datasheet

SN75159
DUAL DIFFERENTIAL LINE DRIVER
WITH 3-STATE OUTPUTS
SLLS088B – JANUARY 1977 – REVISED MAY 1995
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
switching characteristics over operating free-air temperature range, V
CC
= 5 V
PARAMETER TEST CONDITIONS MIN TYP
†
MAX UNIT
t
PLH
Propagation delay time, low-to-high-level output
C
L
= 30 pF, R
L
= 100 Ω, See Figure 2,
16 25 ns
t
PHL
Propagation delay time, high-to-low-level output
L
,
L
,g,
Termination A
11 20 ns
t
PLH
Propagation delay time, low-to-high-level output
C
L
=15
p
F See Figure 2 Termination B
13 20 ns
t
PHL
Propagation delay time, high-to-low-level output
C
L
=
15
pF
,
See
Fig
u
re
2
,
Termination
B
9 15 ns
t
TLH
Transition time, low-to-high-level output
C
L
= 30 pF, R
L
= 100 Ω, See Figure 2,
4 20 ns
t
THL
Transition time, high-to-low-level output
L
,
L
,g,
Termination A
4 20 ns
t
PZH
Output enable time to high level C
L
= 30 pF, R
L
= 180 Ω, See Figure 3 7 20 ns
t
PZL
Output enable time to low level C
L
= 30 pF, R
L
= 250 Ω, See Figure 4 14 40 ns
t
PHZ
Output disable time from high level C
L
= 30 pF, R
L
= 180 Ω, See Figure 3 10 30 ns
t
PLZ
Output disable time from low level C
L
= 30 pF, R
L
= 250 Ω, See Figure 4 17 35 ns
Overshoot factor R
L
= 100 Ω, See Figure 2, Termination C 10%
†
All typical values are at T
A
= 25°C.
SYMBOL EQUIVALENTS
DATA-SHEET PARAMETER
EIA/TIA-422-B
V
O
V
oa,
V
ob
|V
OD1
| V
o
|V
OD2
| V
t
∆|V
OD
| ||V
t
| – |V
t
||
V
OC
|V
os
|
∆|V
OC
| |V
os
– V
os
|
I
OS
|I
sa
| , |I
sb
|
I
O
|I
xa
| , |I
xb
|
PARAMETER MEASUREMENT INFORMATION
V
OC
50 Ω
50 Ω
V
OD2
Figure 1. Differential and Common-Mode Output Voltages