參數(shù)資料
型號(hào)： A176B
廠商： Texas Instruments, Inc.
英文描述： DIFFERENTIAL BUS TRANSCEIVERS
中文描述： 差分總線收發(fā)器
文件頁(yè)數(shù)： 6/21頁(yè)
文件大?。?/td> 402K
代理商： A176B
SN65176B, SN75176B
DIFFERENTIAL BUS TRANSCEIVERS
SLLS101D
–
JULY 1985
–
REVISED APRIL 2003
6
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
SYMBOL EQUIVALENTS
DATA-SHEET PARAMETER
TIA/EIA-422-B
TIA/EIA-485-A
VO
Voa, Vob
Vo
Vt (RL = 100
)
Voa, Vob
Vo
Vt (RL = 54
)
Vt (test termination
t(
measurement 2)
|VOD1|
|VOD2|
|VOD3|
|VOD|
VOC
|VOC|
IOS
IO
| |Vt|
–
|Vt| |
|Vos|
|Vos
–
Vos|
|Isa|, |Isb|
|Ixa|, |Ixb|
| |Vt
–
|Vt| |
|Vos|
|Vos
–
Vos|
Iia, Iib
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
VIT+
VIT
–
Vhys
VIK
Positive-going input threshold voltage
VO = 2.7 V,
VO = 0.5 V,
IO =
–
0.4 mA
IO = 8 mA
0.2
V
Negative-going input threshold voltage
–
0.2
V
Input hysteresis voltage (VIT+
–
VIT
–
)
Enable Input clamp voltage
50
mV
II =
–
18 mA
VID = 200 mV,
See Figure 2
–
1.5
V
VOH
High level output voltage
High-level output voltage
IOH =
–
400
A,
2 7
2.7
V
μ
,
VOL
Low level output voltage
Low-level output voltage
VID =
–
200 mV,
See Figure 2
IOL = 8 mA,
0 45
0.45
V
IOZ
High-impedance-state output current
VO = 0.4 V to 2.4 V
Other input = 0 V,
See Note 7
±
20
μ
A
II
Line input current
VI = 12 V
VI =
–
7 V
1
mA
–
0.8
IIH
IIL
rI
IOS
High-level enable input current
VIH = 2.7 V
VIL = 0.4 V
VI = 12 V
20
μ
A
μ
A
k
mA
Low-level enable input current
–
100
Input resistance
12
Short-circuit output current
–
15
–
85
ICC
Supply current (total package)
No load
Outputs enabled
Outputs disabled
42
26
55
35
mA
All typical values are at VCC = 5 V, TA = 25
°
C.
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.
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