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參數資料
| 型號： | BRS2A |
| 廠商： | Lineage Power |
| 英文描述： | Quad Differential Receivers(四差分接收器) |
| 中文描述： | 四路差分接收器（四差分接收器） |
| 文件頁數： | 1/12頁 |
| 文件大小： | 306K |
| 代理商： | BRS2A |
Data Sheet
March 1999
Quad Differential Receivers
BRF1A, BRF2A, BRR1A, BRS2A, and BRT1A
Features
I
Pin equivalent to the general-trade 26LS32 device,
with improved speed, reduced power consumption,
and significantly lower levels of EMI
I
High input impedance
8 k
I
Four line receivers per package
I
400 Mbits/s maximum data rate when used with
Lucent Technologies Microelectronics Group data
transmission drivers
I
Meets ESDI standards
I
4.0 ns maximum propagation delay
I
<0.20 V input sensitivity
I
1.2 V to
+
7.2 V common-mode range
I
40
°
C to
+
125
°
C ambient operating temperature
range (wider than the 41 Series)
I
Single 5.0 V
±
10% supply
I
Output defaults to logic 1 when inputs are left
open*
I
Available in four package types
I
Lower power requirement than the 41 Series
Description
These quad differential receivers accept digital data
over balanced transmission lines. They translate dif-
ferential input logic levels to TTL output logic levels.
All devices in this family have four receivers with a
common enable control. These receivers are pin
equivalent to the general-trade 26LS32, but offer
increased speed and decreased power consumption.
They replace the Lucent 41 Series receivers.
* This feature is available on BRF1A and BRF2A.
The BRF1A device is the generic receiver in this fam-
ily and requires the user to supply external resistors
on the circuit board for impedance matching.
The BRF2A is identical to the BRF1A but has an
ESD protection circuit added to significantly improve
the ESD (HBM) characteristics on the differential
input terminals.
The BRS2A is identical to the BRF2A but has a pre-
ferred state feature that places the output in the high
state when the inputs are open, shorted to ground, or
shorted to the power supply.
The BRR1A is equivalent to the BRF1A, but has a
110
resistor connected across the differential
inputs. This eliminates the need for an external resis-
tor when terminating a 100
impedance line. This
device is designed to work with the BDP1A or
BPNPA in point-to-point applications.
The BRT1A is equivalent to the BRF1A; however, it is
provided with a Y-type resistor network across the dif-
ferential inputs and terminated to ground. The Y-type
termination provides the best EMI results. This
device is not recommended for applications where
the differences in ground voltage between the driver
and the receiver exceed 1 V. This device is designed
to work with the BDG1A or BPNGA in point-to-point
applications.
The powerdown loading characteristics of the
receiver input circuit are approximately 8 k
relative
to the power supplies; hence, they will not load the
transmission line when the circuit is powered down.
For those circuits with termination resistors, the line
will remain impedance matched when the circuit is
powered down.
The packaging options that are available for these
quad differential line drivers include a 16-pin DIP; a
16-pin, J-lead SOJ; a 16-pin, gull-wing SOIC; and a
16-pin, narrow-body, gull-wing SOIC.
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