dp83251 National Semiconductor Corporation, dp83251 Datasheet - Page 85

• Manufacturer Part Number: dp83251
• Description: Player Device Fddi Physical Layer Controller
• Manufacturer: National Semiconductor Corporation

7 0 Electrical Characteristics
7 5 AC TEST CIRCUITS
Note S
S
S
2
1
1
is closed for T
and S
is closed for T
FIGURE 7-11 Switching Test Circuit
FIGURE 7-9 Switching Test Circuit
2
for All TRI-STATE Output Signals
for All Open Drain Output Signals
are open otherwise
PZH
PZL
(INT ACK and CR)
and T
and T
PLZ
PHZ
TL F 10386 – 29
TL F 10386 – 26
(Continued)
85
Note C
test fixture
L
e
30 pF includes scope and all stray capacitance without device in
for All ECL Input and Output Signals
FIGURE 7-10 Switching Test Circuit
FIGURE 7-12 Switching Test Circuit
for All TTL Output Signals
TL F 10386 – 28
TL F 10386 – 30