O
參數(shù)資料
型號: XR17V252IM-F
廠商: Exar Corporation
文件頁數(shù): 54/69頁
文件大?。?/td> 0K
描述: IC UART PCI BUS DUAL 100TQFP
標準包裝: 90
特點: *
通道數(shù): 2,DUART
FIFO's: 64 字節(jié)
規(guī)程: RS485
電源電壓: 3.3V,5V
帶自動流量控制功能:
帶IrDA 編碼器/解碼器:
帶故障啟動位檢測功能:
帶調(diào)制解調(diào)器控制功能:
安裝類型: 表面貼裝
封裝/外殼: 100-TQFP
供應商設備封裝: 100-TQFP(14x14)
包裝: 托盤
XR17V252
58
66 MHZ PCI BUS DUAL UART WITH POWER MANAGEMENT SUPPORT
REV. 1.0.2
AC ELECTRICAL CHARACTERISTICS
TA=-40
O TO+85OC (INDUSTRIAL GRADE) VCC = 3.0 - 3.6V
SYMBOL
PARAMETER
MIN
MAX
UNITS
NOTES
XTAL1
UART Crystal Oscillator
24
MHz
On-chip osc.
ECLK
External Clock
64
MHz
IOH(AC, min)
Switching Current High, Min
-12VCC
mA
Vout = 0.3VCC
IOH(AC, max) Switching Current High, Max
-32VCC
mA
Vout = 0.7VCC
IOL(AC, min)
Switching Current Low, Min
16VCC
mA
Vout = 0.6VCC
IOL(AC, max) Switching Current Low, Max
38VCC
mA
Vout = 0.18VCC
ICH
High Clamp Current
25+(Vin-VCC-1)/0.015
mA
VCC+4 > Vin
≥ VCC+1
ICL
Low Clamp Current
-25+(Vin+1)/0.015
mA
-3 < Vin
≤ -1
SlewR
Output Rise Slew Rate
1
4
V/ns
0.3VCC to 0.6VCC
SlewF
Output Fall Slew Rate
1
4
V/ns
0.6VCC to 0.3VCC
Tcyc
CLK Cycle Time
15
ns
PCI bus Clock, CLK
up to 66.67MHz
Thigh
CLK High Time
6
ns
Tlow
CLK Low Time
6
ns
CLK Slew Rate
1.5
4
V/ns
Tval
CLK to Signal Valid Delay
2
6
ns
Bused and point to
point signals
Ton
Float to Active Delay
2
ns
Toff
Active to Float Delay
14
ns
Tsu
Input Setup Time to CLK -
bused signals
3
ns
Tsu (ptp)
Input Setup Time to CLK -
point to point signals
5
ns
Th
Input Hold Time from CLK
0
ns
Trst
RST# Active Time After
Power Stable
1
ms
Trst-clk#
RST# Active Time After CLK
Stable
100
us
Trst-off
Reset Active to output float
delay
40
ns
Trhfa
RST# HIGH to first Configu-
ration access
225
clocks
Trhff
RST# HIGH to first FRAME#
assertion
5
clocks
RST# Slew Rate
50
mV/ns
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