Data Sheet
March 2001
Dual Differential Transceiver BTF1A
With Idle Bus Indicator
Electrical Characteristics
(continued)
Table 5. Receiver Voltage and Current Characteristics
For variation in minimum V
OH
and maximum V
OL
over the temperature range, see Figure 10. T
A
= –40 °C to +125 °C.
Parameter
Output Voltages V
CC
= 4.75 V:
Low, I
OL
= 8.0 mA
1
High, I
OH
=
−400
µA
Enable Input Voltages:
Low, V
CC
= 5.25 V
High, V
CC
= 4.75 V
Clamp, V
CC
= 4.75 V, I
I
= –5.0 mA
Minimum 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
Output Currents, V
CC
= 5.25 V:
Off-state (high Z), V
O
= 0.4 V
Off-state (high Z), V
O
= 2.4 V
Short Circuit
Enable Input Currents, V
CC
= 5.25 V:
Low, V
IN
= 0.4 V
High, V
IN
= 2.7 V
Reverse, V
IN
= 5.5 V
Differential Input Currents:
Low, V
IN
= –1.2 V
High, V
IN
= 7.2 V
Symbol
V
OL
V
OH
V
IL
1
V
IH
1
V
IK
V
TH
1
V
OFF
I
OZL
I
OZH
I
OS
3
I
IL
I
IH
I
IH
I
IL
I
IH
Min
—
2.4
—
2.0
—
—
—
—
–25
—
—
—
—
—
Typ
—
—
—
—
—
0.1
0.03
—
—
—
—
—
—
—
—
Max
0.5
—
0.7
—
−1.0
0.20
0.05
–20
20
–100
–400
20
100
−1.0
1.0
Unit
V
V
V
V
V
V
V
µA
µA
mA
µA
µA
µA
mA
mA
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.
Agere Systems Inc.
5
AGERE [ AGERE SYSTEMS ]
