XR17L152 Datasheet, PDF (47/55 Pages) Exar Corporation – 3.3V PCI BUS DUAL UART

XR17L152
3.3V PCI BUS DUAL UART
REV. 1.1.0
áç
DISCONTINUED
AC ELECTRICAL CHARACTERISTICS FOR 3.3V SIGNALING
TA=0^o to 70^oC (-40^o to +85^oC for industrial grade package), Vcc = 3.3V +/-10% unless otherwise specified.
SYMBOL
PARAMETER
MIN
MAX
UNITS
NOTES
CLK
PCI Bus Clock
33
MHz
XTAL1
XTAL2
Crystal Oscillator
24
MHz
On-chip osc.
ECLK
External Clock
33
MHz Ext. clock on XTAL1
I_OH(AC)
Switching Current High
-12Vcc
I_OL(AC)
Switching Current Low
16Vcc
I_CH
Clamping Current High
25+(Vin-Vcc-1)/0.015
I_CL
Clamping Current Low
-25+(Vin+1)/0.015
Slew_R
Output Rise Slew Rate
1
4
Slew_F
Output Fall Slew Rate
1
4
mA
mA
mA
mA
V/ns
V/ns
0 < Vout ≤ 0.3Vcc
Vcc > Vout ≥ 0.6Vcc
Vcc+4 > Vin ≥ Vcc+1
-3 < Vin ≤ -1
0.2Vcc - 0.6Vcc load
0.6Vcc - 0.2Vcc load
T_CYC
CLK Cycle Time
30
T_HI
CLK High Time
11
T_LO
CLK Low Time
11
CLK Slew Rate
1
T_VAL
CLK to Signal Valid Delay
2
T_ON
Float to Active Delay
2
T_OFF
Active to Float Delay
T_SETUP
Input Setup Time to CLK -
7
bused signals
T_HOLD
Input Hold Time from CLK
0
∞
ns
ns
ns
4
V/ns
11
ns
ns
28
ns
ns
ns
T_PRST
RST# Active Time After
1
Power Stable
T_CRST#
RST# Active Time After CLK
100
Stable
RST# Slew Rate
50
ms
us
mV/ns
47