w89c926 Winbond Electronics Corp America, w89c926 Datasheet - Page 45

• Manufacturer Part Number: w89c926
• Description: Pcmcia Ethernet Network Twisted Pair Interface Controller
• Manufacturer: Winbond Electronics Corp America

Output Load
Notes:
1. Load capacitance employed depends on output type:
2. Specifications which measure delays from an active state to a High-Z state are not guaranteed by production testing, but are
characterized using 240 pF and are correlated to determine true driver turn-off time by eliminating inherent R-C delay
measurements.
3. SW1 = Open for push-pull outputs during timing test.
Pin Capacitance
T
Derating Factor
Output timing is measured with a purely capacitive load of 50 pF or 240 pF. The following correction
factor can be used for other loads (this factor is preliminary):
A
For 3SL, MOS, TPI, AUI: CL = 50 pF
For 3SH, OCH: CL = 240 pF
SW1 = V
SW1 = GND for V
SW1 = V
SW1 = GND for High-Z to active high and active high to High-Z measurements.
= 25 C, f = 1 MHz
Derating for 3SL, MOS = -0.05 nS/pF
Derating for 3SH, OCL, TPI = -0.03 nS/pF
Input
SYMBOL
CC
CC
C
C
0.1 F
OUT
for V
for High-Z to active low and active low to High-Z measurements.
IN
OL
OH
test.
test.
Input Capacitance
Output Capacitance
Vcc
DEVICE
UNDER
TEST
PARAMETER
- 45 -
SW1 (Note 3)
Publication Release Date: January 1996
W89C926 PENTIC+
RL = 2.2K
CL (Note 1, 2)
Output
TYP
10
7
UNIT
Revision A1
pF
pF
times in