參數(shù)資料
型號(hào)： LB176Q
廠商： Texas Instruments, Inc.
英文描述： DIFFERENTIAL BUS TRANSCEIVERS
中文描述： 差分總線收發(fā)器
文件頁(yè)數(shù)： 2/22頁(yè)
文件大?。?/td> 440K
代理商： LB176Q
SLLS067G AUGUST 1990 REVISED APRIL 2006
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
description (continued)
The SN55LBC176, SN65LBC176, SN65LBC176Q, and SN75LBC176 combine a 3-state, differential line driver
and a differential input line receiver, both of which operate from a single 5-V power supply. The driver and
receiver have active-high and active-low enables, respectively, which can externally connect together to
function as a direction control. The driver differential outputs and the receiver differential inputs connect
internally to form a differential input/output (I/O) bus port that is designed to offer minimum loading to the bus
whenever the driver is disabled or V
CC
= 0. This port features wide positive and negative common-mode voltage
ranges, making the device suitable for party-line applications. Very low device supply current can be achieved
by disabling the driver and the receiver.
These transceivers are suitable for ANSI Standard TIA/EIA485 (RS-485) and ISO 8482 applications to the
extent that they are specified in the operating conditions and characteristics section of this data sheet. Certain
limits contained in TIA/EIA485A and ISO 8482:1987 (E) are not met or cannot be tested over the entire military
temperature range.
The SN55LBC176 is characterized for operation from 55
°
C to 125
°
C. The SN65LBC176 is characterized for
operation from 40
°
C to 85
°
C, and the SN65LBC176Q is characterized for operation from 40
°
C to 125
°
C.
The SN75LBC176 is characterized for operation from 0
°
C to 70
°
C.
logic symbol
logic diagram (positive logic)
2
EN1
EN2
B
A
1
4
2
R
D
RE
7
6
D
RE
R
7
6
4
1
2
B
A
Bus
3
1
1
DE
3
DE
This symbol is in accordance with ANSI/IEEE Std 91-1984 and
IEC Publication 617-12.
AVAILABLE OPTIONS
TA
PACKAGE
SOP
PART NUMBER
SN75LBC176D
PART MARKING
7LB176
0
°
C to 70
°
C
PDIP
SN75LBC176P
75LBC176
40
°
C to 85
°
C
SOP
SN65LBC176D
6LB176
PDIP
SN65LBC176P
65LBC176
40
°
C to 110
°
C
SOP
SN65LBC176QD
LB176Q
SOP
SN65LBC176QDR
LB176Q
55
°
C to 125
°
C
LCCC
SNJ55LBC176FK
SNJ55LBC176FK
CDIP
SNJ55LBC176JG
SNJ55LBC176
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