SN65LBC179A, SN75LBC179A
LOW-POWER DIFFERENTIAL LINE DRIVER AND RECEIVER PAIRS
SLLS377C – MAY 2000 – REVISED JUNE 2001
RECEIVER SECTION
receiver electrical characteristics over recommended operating conditions (unless otherwise
noted)
PARAMETER
TEST CONDITIONS
MIN
–0.2
4
TYP
MAX
UNIT
V
IT+
V
IT–
V
hys
V
OH
V
OL
Positive-going input threshold voltage
Negative-going input threshold voltage
I
I
= –8 mA
0.2
O
V
= 8 mA
O
Hysteresis voltage (V
IT+
– V
)
50
4.9
mV
V
IT–
High-level output voltage
Low-level output voltage
V
V
V
V
V
V
= 200 mV, I
OH
= –8 mA, See Figure 1
= 8 mA, See Figure 1
ID
ID
IH
IH
IH
IH
= –200 mV, I
0.1
0.8
1
V
OL
= 5 V
= 12 V,
= 12 V,
= –7 V,
= –7 V,
V
0.4
CC
V
= 0
0.5
1
CC
I
I
Bus input current
Other input at 0 V
mA
V
= 5 V
= 0
–0.8
–0.8
–0.4
–0.3
CC
CC
V
receiver switching characteristics over recommended operating conditions (unless otherwise
noted)
PARAMETER
TEST CONDITIONS
MIN
7
TYP
13
MAX
20
UNIT
ns
t
t
t
t
t
Propagation delay time, low-to-high-level output
Propagation delay time, high-to-low-level output
PLH
PHL
sk(p)
r
V
ID
= –1.5 V to 1.5 V,
See Figure 4
7
13
20
ns
Pulse skew (| t
– t
|)
0.5
2.1
2.1
1.5
3.3
3.3
ns
PLH PHL
Rise time, output
Fall time, output
ns
See Figure 4
ns
f
PARAMETER MEASUREMENT INFORMATION
Y
27 Ω
D
V
OD
0 V or 3 V
27 Ω
V
OC
Z
Figure 1. Driver V
and V
OC
OD
5
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