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SN75LBC179 Datasheet(PDF) 4 Page - Texas Instruments

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Part No. SN75LBC179
Description  LOW-POWER DIFFERENTIAL LINE DRIVER AND RECEIVER PAIRS
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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SN75LBC179 Datasheet(HTML) 4 Page - Texas Instruments

 
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SN75LBC179, SN65LBC179, SN65LBC179Q
LOW-POWER DIFFERENTIAL LINE DRIVER AND RECEIVER PAIRS
SLLS173C – JANUARY 1994 – REVISED JANUARY 2000
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
DRIVER SECTION
electrical characteristics over recommended operating conditions (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP†
MAX
UNIT
VIK
Input clamp voltage
II = – 18 mA
– 1.5
V
RL = 54 Ω,
See Figure 1
SN65LBC179,
SN65LBC179Q
1.1
2.2
5
|VOD |
Differential output voltage (see Note 3)
See Figure 1
SN75LBC179
1.5
2.2
5
V
|VOD |
Differential output voltage (see Note 3)
RL = 60 Ω,
See Figure 2
SN65LBC179,
SN65LBC179Q
1.1
2.2
5
V
See Figure 2
SN75LBC179
1.5
2.2
5
∆|VOD|
Change in magnitude of differential
output voltage (see Note 4)
See Figures 1 and 2
±0.2
V
VOC
Common-mode output voltage
1
2.5
3
V
∆|VOC|
Change in magnitude of common-mode output
voltage (see Note 4)
RL = 54 Ω,
See Figure 1
±0.2
V
IO
Output current with power off
VCC = 0,
VO = – 7 V to 12 V
±100
µA
IIH
High-level input current
VI = 2.4 V
– 100
µA
IIL
Low-level input current
VI = 0.4 V
– 100
µA
IOS
Short-circuit output current
–7 V
≤ VO ≤ 12 V
±250
mA
ICC
Supply current
No load
SN65LBC179,
SN75LBC179
4.2
5
mA
CC
y
SN65LBC179Q
4.2
7
mA
† All typical values are at VCC = 5 V and TA = 25°C.
NOTES:
3. The minimum VOD specification of the SN65179 may not fully comply with ANSI RS-485 at operating temperatures below 0°C.
System designers should take the possibly lower output signal into account in determining the maximum signal transmission
distance.
4.
∆|VOD| and ∆|VOC| are the changes in the steady-state magnitude of VOD and VOC, respectively, that occur when the input is
changed from a high level to a low level.
switching characteristics, VCC = 5 V, TA = 25°C
PARAMETER
TEST CONDITIONS
MIN
MAX
UNIT
td(OD)
Differential-output delay time
RL =54 Ω
See Figure 3
7
18
ns
tt(OD)
Differential transition time
RL = 54 Ω,
See Figure 3
5
20
ns


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