Quad Differential Drivers
BDG1A, BDP1A, BDGLA, BPNGA, BPNPA, and
Data Sheet
January 1999
Test Conditions
Output Characteristics
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.
Figure 6 illustrates typical driver output characteristics.
Included are load lines for two typical termination con-
figurations.
OUTPUT VOLTAGE (V)
VCC – 2 V
VCC – 1 V
VCC
100 Ω
DO(+)
200 Ω
DO(–)
200 Ω
VOH
10
20
30
40
Y LOAD
BDG1A, BPNGA, BDGLA, BPPGA (Gates A & B)
VOL
12-2271F
π LOAD
100 Ω
DO
DO
12-2269F
BDP1A, BPNPA, BPPGA (Gates C & D)
Figure 4. Driver Test Circuit
A. Output Current vs. Output Voltage for Loads
Shown in C and D (BDG1A, BDP1A, BPNGA,
BPNPA, and BPPGA)
12-2271.bC
OUTPUT VOLTAGE (V)
VCC – 3 V
VCC – 2 V
VCC – 1 V
VCC
VOH
+5 V
10
20
30
40
110 Ω
Y LOAD
VOL
DUT
110 Ω
π LOAD
+60 V
SURGE
+
–
+60 V
SURGE
10 µs
DURATION
12-2818aC
+
–
10 µs
B. Output Current vs. Output Voltage for Loads
Shown in C and D (BDGLA)
1 ms
REPETITION
DURATION
1 ms
REPITITION
60 Ω
60 Ω
12-2640.aF
DO
DO
Note: Surges can be applied simultaneously, but never in opposite
polarities.
90 Ω
Figure 5. Lightning-Surge Testing Configuration
(BPNGA, BPNPA, and BPPGA)
12-2270F
C. Y Load
100 Ω
DO(+)
DO(–)
200 Ω
200 Ω
12-2271F
D. π Load
Figure 6. Driver Output Current vs. Voltage
Characteristics
Agere Systems Inc.
7
AGERE [ AGERE SYSTEMS ]
