SN65176B, SN75176B
DIFFERENTIAL BUS TRANSCEIVERS
SLLS101D – JULY 1985 – REVISED APRIL 2003
SYMBOL EQUIVALENTS
TIA/EIA-422-B
DATA-SHEET PARAMETER
TIA/EIA-485-A
V
O
V
V
V V
oa, ob
oa, ob
|V
|V
|
|
V
V
o
OD1
o
V (R = 100 Ω)
V (R = 54 Ω)
t L
OD2
t
L
V (test termination
t
measurement 2)
|V
|
OD3
∆|V
|
|
| |V | – |V | |
| |V – |V | |
t t
OD
t
t
V
OC
|V
os
|
|V |
os
∆|V
|V – V
os os
|
|V – V |
os os
OC
I
|I |, |I
|
|
OS
sa sb
I
O
|I |, |I
xa xb
I , I
ia ib
RECEIVER SECTION
electrical characteristics over recommended ranges of common-mode input voltage, supply
voltage, and operating free-air temperature (unless otherwise noted)
†
PARAMETER
TEST CONDITIONS
MIN TYP
MAX
UNIT
V
V
IT+
V
IT–
V
hys
V
IK
Positive-going input threshold voltage
Negative-going input threshold voltage
V
V
= 2.7 V,
= 0.5 V,
I
I
= –0.4 mA
0.2
O
O
‡
–0.2
= 8 mA
V
O
O
Input hysteresis voltage (V
IT+
– V
)
50
mV
V
IT–
Enable Input clamp voltage
I = –18 mA
I
–1.5
V
= 200 mV,
I
I
= –400 µA,
ID
See Figure 2
OH
V
OH
V
OL
High-level output voltage
2.7
V
V
= –200 mV,
= 8 mA,
ID
See Figure 2
OL
Low-level output voltage
0.45
V
I
High-impedance-state output current
Line input current
V
= 0.4 V to 2.4 V
±20
µA
mA
OZ
O
V = 12 V
Other input = 0 V,
See Note 7
I
1
–0.8
I
I
V = –7 V
I
I
I
High-level enable input current
Low-level enable input current
Input resistance
V
V
= 2.7 V
= 0.4 V
20
µA
µA
kΩ
mA
IH
IH
–100
IL
IL
r
V = 12 V
I
12
I
I
Short-circuit output current
–15
–85
55
OS
Outputs enabled
Outputs disabled
42
26
I
Supply current (total package)
No load
mA
CC
35
†
‡
All typical values are at V
= 5 V, T = 25°C.
A
CC
The algebraic convention, in which the less positive (more negative) limit is designated minimum, is used in this data sheet for common-mode
input voltage and threshold voltage levels only.
NOTE 7: This applies for both power on and power off. Refer to EIA Standard TIA/EIA-485-A for exact conditions.
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TI [ TEXAS INSTRUMENTS ]
