Data Sheet
October 2001
Dual Differential Transceivers
BTK1A and BTM1A
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
= 4.5 V:
Low, I
OL
= 8.0 mA*
High, I
OH
=
−
400
µ
A
Enable Input Voltages:
Low, V
CC
= 5.5 V
High, V
CC
= 4.5 V
Clamp, V
CC
= 4.5 V, I
I
= –5.0 mA
Minimum Differential Input Voltages, V
IH –
V
IL
:
†
−
0.80 V < V
IH
< 7.2 V,
−
1.2 V < V
IL
< 6.8 V
Symbol
V
OL
V
OH
V
IL
*
V
IH
*
V
IK
V
TH
*
V
OFF
I
OZL
I
OZH
I
OS
‡
I
IL
I
IH
I
IH
I
IL
I
IH
R
1
Min
—
2.4
—
2.0
—
—
—
—
–25
—
—
—
Typ
—
—
—
—
—
0.1
Max
0.5
—
0.7
—
−
1.0
0.20
Unit
V
V
V
V
V
V
Input Offset Voltage
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 Input 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, (BTK1A):
Low, V
IN
= –1.2 V
High, V
IN
= 7.2 V
Differential Input Impedance (BTM1A):
Connected Between RI and RI
0.03
—
—
—
—
—
—
0.05
–20
20
–100
V
µA
µA
mA
µA
µA
µA
mA
mA
Ω
–400
20
100
−
1.0
—
—
—
—
—
110
1.0
—
* The input levels and difference voltage provide zero noise immunity and should be tested only in a static, noise-free environment.
† 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.)
‡ Test must be performed one lead at a time to prevent damage to the device.
Agere Systems Inc.
5
AGERE [ AGERE SYSTEMS ]
