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參數(shù)資料
| 型號： | BTM1A |
| 廠商： | Lineage Power |
| 英文描述： | Dual Differential Transceivers(雙差分收發(fā)器) |
| 中文描述： | 雙差分收發(fā)器（雙差分收發(fā)器） |
| 文件頁數(shù)： | 1/18頁 |
| 文件大?。?/td> | 362K |
| 代理商： | BTM1A |
Data Sheet
October 1998
Dual Differential Transceivers
BTK1A, BTL1A, and BTM1A
Features
Driver Features
I
Two line drivers per package
I
Logic to convert TTL input logic levels to differen-
tial, pseudo-ECL output logic levels
I
No line loading when V
CC
= 0 V
I
High output driver for 50
loads
I
200 mA short-circuit current (typical)
I
2.0 ns maximum propagation delay
I
<0.2 ns output skew (typical)
Receiver Features
I
Two line receivers per package
I
High input impedance
8 k
I
Logic that converts differential input logic levels to
TTL output logic levels
I
4.0 ns maximum propagation delay
I
<0.20 V input sensitivity (typical)
I
1.2 V to
+
7.2 V common-mode range
Common Device Features
I
Common enable for each driver/receiver pair
I
Operating temperature range: –40
°
C to +125
°
C
(wider than the 41 Series)
I
Single 5.0 V
±
10% supply
I
400 Mbits/s maximum data rate
I
Meets ESDI standards
I
ESD performance better than the 41 Series
I
Lower power requirement than the 41 Series
Description
The BTK1A, BTL1A, and BTM1A devices are dual
differential transceiver circuits that transmit and
receive digital data over balanced transmission lines
and are compatible with Lucent Technologies Micro-
electronics Group quad differential drivers and
receivers. The dual drivers translate input TTL logic
levels to differential pseudo-ECL output levels. The
dual receivers convert differential input logic levels to
TTL output levels. Each driver/receiver pair has its
own common enable control allowing serial data and
a control clock to be transmitted and received on a
single integrated circuit. The BTK1A transceiver
requires the customer to supply termination resistors
on the circuit board. The BTL1A transceiver has an
internal 220
termination resistor connected to
ground on each driver output and is equivalent to the
8923A device. The BTM1A transceiver has an inter-
nal resistor termination for both the driver outputs
(220
) and receiver inputs (110
), eliminating the
need for external resistors on the circuit board when
used with 100
impedance, twisted-pair (or flat)
cable. These transceivers replace the Lucent 41
Series transceivers.
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 driver does not load the line
when it is powered down.
The packaging options that are available for the
dual differential transceivers 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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