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| 型號： | BRT1A |
| 英文描述： | Quad Differential Receivers |
| 中文描述： | 四路差分接收器 |
| 文件頁數(shù)： | 3/12頁 |
| 文件大?。?/td> | 236K |
| 代理商： | BRT1A |
Agere Systems Inc.
3
Data Sheet
April 2001
BRF1A, BRF2A, BRS2B, BRR1A, and BRT1A
Quad Differential Receivers
Electrical Characteristics
(continued)
Table 3. Voltage and Current Characteristics
For variation in minimum V
OH
and maximum V
OL
over the temperature range, see Figure 8. T
A
= –40 °C to +125 °C.
12-2819.a(F)
Figure 2. BRT1A Terminating Resistor Configuration
Parameter
Sym
Min
Typ
Max
Unit
Output Voltages, V
CC
= 4.5 V:
Low, I
OL
= 8.0 mA
High, I
OH
=
400 μA
Enable Input Voltages:
Low, V
CC
= 5.5 V
High, V
CC
= 5.5 V
Clamp, V
CC
= 4.5 V, I
I
= –5.0 mA
Differential Input Voltages, V
IH –
V
IL
:
2
0.80 V < V
IH
< 7.2 V,
1.2 V < V
IL
< 6.8 V
Input Offset Voltage
Input Offset Voltage BRS2B
Output Currents, V
CC
= 5.5 V:
Off-state (high Z), V
O
= 0.4 V
Off-state (high Z), V
O
= 2.4 V
Short Circuit
Enable Currents, V
CC
= 5.5 V:
Low, V
IN
= 0.4 V
High, V
IN
= 2.7 V
Reverse, V
IN
= 5.5 V
Differential Input Currents, V
CC
= 5.5 V:
Low, V
IN
= –1.2 V
High, V
IN
= 7.2 V
Differential Input Impedance (BRR1A):
Connected Between RI and RI
Differential Input Impedance (BRT1A)
4
V
OL
V
OH
—
2.4
—
—
0.5
—
V
V
V
IL
1
V
IH
1
V
IK
1. The input levels and difference voltage provide zero noise immunity and should be tested only in a static, noise-free environment.
2. Outputs of unused receivers assume a logic 1 level when the inputs are left open. (It is recommended that all unused positive inputs
be tied to the positive power supply. No external series resistor is required.)
3. Test must be performed one lead at a time to prevent damage to the device.
4. See Figure 2.
—
2.0
—
—
—
—
0.7
—
–1.0
V
V
V
V
TH
1
V
OFF
V
OFF
—
0.1
0.02
0.1
0.20
0.05
0.15
V
V
V
I
OZL
I
OZH
I
OS
3
—
—
–25
—
—
—
–20
20
–100
μA
μA
mA
I
IL
I
IH
I
IH
—
—
—
—
—
—
–400
20
100
μA
μA
μA
I
IL
I
IH
—
—
—
—
1.0
1.0
mA
mA
R
O
R
1
R
2
—
—
—
110
60
90
—
—
—
RI
R1
R1
R2
RI
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