Texas Instruments THUNDERSWITCH II TNETX4090 - Manual (Page 75)

TNETX4090
ThunderSWITCH II

9-PORT 100-/1000-MBIT/S ETHERNET

SWITCH
SPWS044E – DECEMBER 1997 – REVISED AUGUST 1999
75
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
VDD
0
20%
47%
80%
Input
(active-low
enable)
Hi-Z
Active
VOH
Hi-Z (forced low)
50% LVCMOS
1.3 V TTL
tPZH
Output
High
VOL
Hi-Z (forced high)
50% LVCMOS
1.3 V TTL Output
Low
tPZL
VDD
0
20%
47%
80%
Input
(active-low
enable)
Hi-Z
Active
+ Ion
0 mA
tPHZ
Output
High
– Ion
0 mA
1 mA
Output
Low
tPLZ
1 mA
Figure 35. TTL 3-State Output Disable and Enable Voltage Waveforms