Dual Differential Transceiver BTF1A
With Idle Bus Indicator
Data Sheet
March 2001
Timing Characteristics (continued)
3 V
E1*
1.5 V
0 V
3 V
†
E2
1.5 V
0 V
tPHZ
tPZH
tPLZ
tPZL
VOH
OUTPUT
∆V = 0.5 V
VOL
∆V = 0.5 V
∆V = 0.5 V
∆V = 0.5 V
12-2538.b(F)
* E2 = 1 while E1 changes state.
†E1 = 0 while E2 changes state.
Figure 6. Receiver Enable and Disable Timing
Test Conditions
+5 V
2 kΩ
Parametric values specified under the Electrical Char-
acteristics and Timing Characteristics sections for the
data transmission driver devices are measured with the
following output load circuits.
TO OUTPUT OF
DEVICE UNDER
TEST
CL
5 kΩ
15 pF*
100 Ω
DO
200 Ω
DO
200 Ω
12-2249(F)
* Includes probe and jig capacitances.
Note: All 458E, IN4148, or equivalent diodes.
12-2271.a(F)
Figure 8. Receiver Propagation Delay Test Circuit
Figure 7. Driver Propagation Delay Test Circuit
Agere Systems Inc.
9
AGERE [ AGERE SYSTEMS ]
