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SN75ALS172A Datasheet(PDF) 4 Page - Texas Instruments

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Part No. SN75ALS172A
Description  QUADRUPLE DIFFERENTIAL LINE DRIVER
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

SN75ALS172A Datasheet(HTML) 4 Page - Texas Instruments

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SN75ALS172A
QUADRUPLE DIFFERENTIAL LINE DRIVER
SLLS121D – AUGUST 1990 – REVISED APRIL 1998
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP†
MAX
UNIT
VIK
Input clamp voltage
II = –18 mA
–1.5
V
VO
Output voltage
IO = 0
0
6
V
|VOD1|
Differential output voltage
IO = 0
1.5
6
V
|VOD2|
Differential output voltage
VCC = 5 V,
RL = 100 Ω,
See Figure 1
1/2 VOD1 or 2‡
V
|VOD2|
Differential output voltage
RL = 54 Ω,
See Figure 1
1.5
2.5
5
V
|VOD3|
Differential output voltage
See Note 2
1.5
5
V
∆|VOD|
Change in magnitude of
differential output voltage§
RL = 54 Ω or 100 Ω,
See Figure 1
±0.2
V
VOC
Common-mode output voltage¶
RL = 54 Ω or 100 Ω,
See Figure 1
3
–1
V
∆|VOC|
Change in magnitude of
common-mode output voltage§
RL = 54 Ω or 100 Ω,
See Figure 1
±0.2
V
IO
Output current with power off
VCC = 0,
VO = –7 V to 12 V
±100
µA
IOZ
High-impedance-state
output current
VO = –7 V to 12 V
±100
µA
IIH
High-level input current
VI = 2.7 V
20
µA
IIL
Low-level input current
VI = 0.4 V
–100
µA
IOS
Short-circuit output current
VO = –7 V to 12 V
±250
mA
ICC
Supply current (all drivers)
No load
Outputs enabled
36
55
mA
ICC
Supply current (all drivers)
No load
Outputs disabled
15
30
mA
† All typical values are at VCC = 5 V and TA = 25°C.
‡ The minimum VOD2 with a 100-Ω load is either 1/2 VOD1 or 2 V, whichever is greater.
§
∆|VOD| and ∆|VOC| are the changes in magnitude of VOD and VOC, respectively, that occur when the input is changed from a high level to a low
level.
¶ In ANSI Standard EIA/TIA-422-B, VOC, which is the average of the two output voltages with respect to ground, is called output offset voltage,
VOS.
NOTE 2: See EIA Standard RS-485, Figure 3-5, Test Termination Measurement 2.
switching characteristics over recommended ranges of supply voltage and operating free-air
temperature, CL = 50 pF
PARAMETER
TEST CONDITIONS
MIN
TYP†
MAX
UNIT
td(OD)
Differential-output delay time
RL = 54 Ω,
See Figure 2
9
15
22
ns
tPZH
Output enable time to high level
RL = 110 Ω,
See Figure 3
30
45
70
ns
tPZL
Output enable time to low level
RL = 110 Ω,
See Figure 4
25
40
65
ns
tPHZ
Output disable time from high level
RL = 110 Ω,
See Figure 3
10
20
35
ns
tPLZ
Output disable time from low level
RL = 110 Ω,
See Figure 4
10
30
45
ns
† All typical values are at VCC = 5 V and TA = 25°C.


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