參數(shù)資料
型號(hào): XR17L152
廠商: Exar Corporation
英文描述: 3.3V PCI BUS DUAL UART
中文描述: 3.3V的PCI總線雙UART
文件頁(yè)數(shù): 47/55頁(yè)
文件大小: 318K
代理商: XR17L152
XR17L152
3.3V PCI BUS DUAL UART
REV. 1.1.0
á
DISCONTINUED
47
AC ELECTRICAL CHARACTERISTICS FOR 3.3V SIGNALING
TA=0
o
to
70
o
C (-40
o
to +85
o
C for industrial grade package), Vcc = 3.3V +/-10% unless otherwise specified.
S
YMBOL
P
ARAMETER
M
IN
M
AX
U
NITS
N
OTES
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
mA
0 < Vout
0.3Vcc
I
OL(AC)
Switching Current Low
16Vcc
mA
Vcc > Vout
0.6Vcc
I
CH
Clamping Current High
25+(Vin-Vcc-1)/0.015
mA
Vcc+4 > Vin
Vcc+1
I
CL
Clamping Current Low
-25+(Vin+1)/0.015
mA
-3 < Vin
-1
Slew
R
Output Rise Slew Rate
1
4
V/ns
0.2Vcc - 0.6Vcc load
Slew
F
Output Fall Slew Rate
1
4
V/ns
0.6Vcc - 0.2Vcc load
T
CYC
CLK Cycle Time
30
ns
T
HI
CLK High Time
11
ns
T
LO
CLK Low Time
11
ns
CLK Slew Rate
1
4
V/ns
T
VAL
CLK to Signal Valid Delay
2
11
ns
T
ON
Float to Active Delay
2
ns
T
OFF
Active to Float Delay
28
ns
T
SETUP
Input Setup Time to CLK -
bused signals
7
ns
T
HOLD
Input Hold Time from CLK
0
ns
T
PRST
RST# Active Time After
Power Stable
1
ms
T
CRST#
RST# Active Time After CLK
Stable
100
us
RST# Slew Rate
50
mV/ns
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