SN65ALS180 Datasheet, PDF (5/17 Pages) Texas Instruments – DIFFERENTIAL DRIVER AND RECEIVER PAIRS

SN65ALS180, SN75ALS180
DIFFERENTIAL DRIVER AND RECEIVER PAIRS
DRIVERS
SLLS052G – AUGUST 1987 – REVISED APRIL 2003
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS^†
MIN TYP^‡ MAX UNIT
VIK
VO
|VOD1|
Input clamp voltage
Output voltage
Differential output voltage
|VOD2| Differential output voltage
VOD3
∆|VOD|
Differential output voltage
Change in magnitude of
differential output voltage^¶
II = –18 mA
IO = 0
IO = 0
RL = 100 Ω,
RL = 54 Ω,
Vtest = –7 V to 12 V,
RL = 54 Ω or 100 Ω,
See Figure 1
See Figure 1
See Figure 2
See Figure 1
–1.5 V
0
6V
1.5
6V
1/2 VOD1
or 2^§
1.5 2.5
V
5
1.5
5V
±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
Output disabled
(see Note 5)
VO = 12 V
VO = –7 V
1
mA
–0.8
IIH
High-level input current
VI = 2.4 V
20 µA
IIL
Low-level input current
VI = 0.4 V
–400 µA
VO = –6 V
SN75ALS180
–250
VO = –4 V
IOS
Short-circuit output current#
VO = 0
SN65ALS180
All
–250
–150 mA
VO = VCC
All
250
VO = 8 V
All
250
ICC
Supply current
No load
Driver outputs enabled,
Receiver disabled
25
30
mA
Outputs disabled
19
26
† _{The power-off measurement in TIA/EIA-422-B applies to disabled outputs only and is not applied to combined inputs and outputs.}
‡ _{All typical values are at VCC = 5 V, TA = 25°C.}
§ _{The minimum VOD2 with 100-Ω load is either 1/2 VOD2 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.
# _{Duration of the short circuit should not exceed one second for this test.}
NOTE 5: This applies for both power on and off; refer to TIA/EIA-485-A for exact conditions. The TIA/EIA-422-B limit does not apply for a combined
driver and receiver terminal.
switching characteristics over recommended ranges of supply voltage and operating free-air
temperature
PARAMETER
td(OD) Differential output delay time
Pulse skew (td(ODH) – td(ODL))
tt(OD) Differential output transition time
tPZH
Output enable time to high level
tPZL
Output enable time to low level
tPHZ
Output disable time from high level
tPLZ
Output disable time from low level
‡ _{All typical values are at VCC = 5 V and TA = 25°C.}
TEST CONDITIONS
RL = 54 Ω,
RL = 54 Ω,
RL = 54 Ω,
RL = 110 Ω,
RL = 110 Ω,
RL = 110 Ω,
RL = 110 Ω,
CL = 50 pF,
CL = 50 pF,
CL = 50 pF,
See Figure 4
See Figure 5
See Figure 4
See Figure 5
See Figure 3
See Figure 3
See Figure 3
MIN TYP^‡
3
8
1
3
8
23
19
8
8
MAX
13
6
13
50
24
13
13
UNIT
ns
ns
ns
ns
ns
ns
ns
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