xr17v258 Exar Corporation, xr17v258 Datasheet - Page 64

• Manufacturer Part Number: xr17v258
• Description: 66mhz Pci Bus Octal Uart With Power Management Support
• Manufacturer: Exar Corporation

XR17V258
66MHZ PCI BUS OCTAL UART WITH POWER MANAGEMENT SUPPORT
F
IGURE
23. 3.3V PCI B
Tri-State
Output
Output
Delay
CLK
0.3VCC
0.4VCC
0.5VCC
US
C
Input
T_val
LOCK
T_on
(DC
T_high
V_trise
V_tfall
V_th
T_off
V_tl
TO
66MH
T_cyc
V_test
Z
)
64
T_low
Measurement Condition Parameters
Vth = 0.6VCC
Vtl = 0.2VCC
Vtest = 0.4VCC
Vtrise = 0.285VCC
Vtfall = 0.615VCC
Vmax = 0.4VCC
Input Signal Slew Rate = 1.5 V/ns
T_su
Inputs Valid
T_h
0.4 VCC, p-to-p
(minimum)
0.6VCC
xr
0.2VCC
pci_clk
V_max
REV. 1.0.0