LB180 Просмотр технического описания (PDF) - Unspecified
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LB180 Datasheet PDF : 24 Pages
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SN55LBC180
SN65LBC180
SN75LBC180
SLLS174G – FEBRUARY 1994 – REVISED APRIL 2009................................................................................................................................................... www.ti.com
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
DESCRIPTION (CONTINUED)
The SN55LBC180, SN65LBC180 and SN75LBC180 combine a differential line driver and receiver with 3-state
outputs and operate from a single 5-V supply. The driver and receiver have active-high and active-low enables,
respectively, which can be externally connected to function as a direction control. The driver differential outputs
and the receiver differential inputs are connected to separate terminals for full-duplex operation and are designed
to present minimum loading to the bus whether disabled or powered off (VCC = 0). These parts feature a wide
common-mode voltage range making them suitable for point-to-point or multipoint data-bus applications.
The devices also provide positive and negative output-current limiting and thermal shutdown for protection from
line fault conditions. The line driver shuts down at a junction temperature of approximately 172°C.
The SN75LBC180 is characterized for operation over the commercial temperature range of 0°C to 70°C. The
SN65LBC180 is characterized over the industrial temperature range of –40°C to 85°C.
The SN55LBC180 is characterized for operation over the military temperature range of –55°C to 125°C.
INPUT
D
H
L
X
FUNCTION TABLES(1)
DRIVER
ENABLE
DE
H
H
L
OUTPUTS
Y
Z
H
L
L
H
Z
Z
DIFFERENTIAL INPUTS
A–B
VID ≥ 0.2 V
–0.2 V < VID < 0.2 V
VID ≤ –0.2 V
X
Open circuit
RECEIVER
ENABLE
RE
L
L
L
H
L
OUTPUT
R
H
?
L
Z
H
(1) H = high level, L = low level, ? = Indeterminate, X = irrelevant,
Z = high impedance (off)
2
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Copyright © 1994–2009, Texas Instruments Incorporated
Product Folder Link(s): SN55LBC180 SN65LBC180 SN75LBC180
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