SN65ALS1176DR Datasheet, PDF (6/18 Pages) Texas Instruments – DIFFERENTIAL BUS TRANSCEIVER

SN65ALS1176
DIFFERENTIAL BUS TRANSCEIVER
SLLS295A – APRIL 1998 – REVISED DECEMBER 1999
RECEIVER SECTION
electrical characteristics over recommended ranges of common-mode input voltage, supply
voltage, and operating free-air temperature range (unless otherwise noted)
VIT+
VIT _–
Vhys
VIK
VOH
PARAMETER
Positive-going input threshold voltage
Negative-going input threshold voltage
Hysteresis voltage (VIT ₊ – VIT _–)
Enable-input clamp voltage
High-level output voltage
TEST CONDITIONS
VO = 2.7 V,
VO = 0.5 V,
IO = – 0.4 mA
IO = 8 mA
II = – 18 mA
VID = 200 mV,
See Figure 6
IOH = – 400 µA,
MIN TYP†
– 0.2‡
60
MAX
0.2
– 1.5
UNIT
V
V
mV
V
2.7
V
VOL Low-level output voltage
VID = – 200 mV, IOL = 8 mA,
See Figure 6
0.45 V
IOZ
High-impedance-state output current
VO = 0.4 V to 2.4 V
± 20 µA
VI
Line input current
Other input = 0 V, ^{VI = 12 V}
See Note 5
VI = – 7 V
1
mA
– 0.8
IIH
High-level-enable input current
VIH = 2.7 V
20 µA
IIL
Low-level-enable input current
VIL = 0.4 V
– 100 µA
rI
Input resistance
12
20
kΩ
IOS
Short-circuit output current
VID = 200 mV,
VO = 0
– 15
– 85 mA
ICC
Supply current
No load
Outputs enabled
Outputs disabled
23
30
mA
19
26
† _{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 5: This applies for both power on and power off. Refer to TIA/EIA-485-A for exact conditions.
switching characteristics over recommended ranges of supply voltage and operating free-air
temperature range
PARAMETER
TEST CONDITIONS
tpd
tsk(p)
Propagation time
Pulse skew§
VID = – 1.5 V to 1.5 V,
See Figure 7
tPZH Output enable time to high level
tPZL
tPHZ
Output enable time to low level
Output disable time from high level
CL = 15 pF,
tPLZ Output disable time from low level
† _{All typical values are at VCC = 5 V, TA = 25°C.}
§ _{Pulse skew is defined as the |tPLH – tPHL| of each channel of the same device.}
CL = 15 pF,
See Figure 8
MIN TYP†
0
11
11
MAX
25
2
18
18
50
30
UNIT
ns
ns
ns
ns
ns
ns
6
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