w89c940 Winbond Electronics Corp America, w89c940 Datasheet - Page 60

• Manufacturer Part Number: w89c940
• Description: Elanc-pci Twisted-pair Ether-lan Controller With Pci Interface
• Manufacturer: Winbond Electronics Corp America

TA = 25°C f = 1 MHz
Output timing is measured with a purely capacitive load of 50pF or 240pF.
The following correction factor can be used for other loads (this factor is preliminary only):
Note: In the above diagram, the TX+ and TX- signals are taken from the AUI side of the pulse transformer.
Derating for 3SL, MOS = -0.05 nS/pF.
Derating for 3SH, OCL, TPI = -0.03 nS/pF.
C
C
The pulse transformer used for all testing is a 100µH +/-0.1% Pulse Engineering PE64103.
OUT
IN
Output Capacitance
Input Capacitance
DON
DOP
R=270
10
7
R=270
60
pF
p
R=78
W89C940