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| 型号： | ICS840004BGILFT |
| 厂商： | IDT, Integrated Device Technology Inc |
| 文件页数： | 12/19页 |
| 文件大小： | 0K |
| 描述： | IC FREQ SYNTHESIZER 20TSSOP |
| 标准包装： | 2,500 |
| 系列： | HiPerClockS™, FemtoClock™ |
| 类型： | 频率合成器 |
| PLL： | 带旁路 |
| 输入： | LVCMOS，LVTTL，晶体 |
| 输出： | LVCMOS，LVTTL |
| 电路数： | 1 |
| 比率 - 输入:输出： | 2:4 |
| 差分 - 输入:输出： | 无/无 |
| 频率 - 最大： | 159.375MHz |
| 除法器/乘法器： | 是/无 |
| 电源电压： | 2.375 V ~ 3.465 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 20-TSSOP |
| 包装： | 带卷 (TR) |
ICS840004BGI REVISION B JULY 6, 2009
2
2009 Integrated Device Technology, Inc.
ICS840004I Data Sheet
FEMTOCLOCK CRYSTAL-TO-LVCMOS/LVTTL FREQUENCY SYNTHESIZER
Table 1. Pin Descriptions
NOTE: Pullup and Pulldown refer to internal input resistors. See Table 2, Pin Characteristics, for typical values.
Table 2. Pin Characteristics
Number
Name
Type
Description
1, 20
F_SEL0,
F_SEL1
Input
Pullup
Frequency select pins. LVCMOS/LVTTL interface levels.
2, 9
nc
Unused
No connect.
3
nXTAL_SEL
Input
Pulldown
Selects between the crystal or REF_CLK inputs as the PLL reference
source. When HIGH, selects REF_CLK. When LOW, selects XTAL inputs.
LVCMOS/LVTTL interface levels.
4
REF_CLK
Input
Pulldown
Single-ended reference clock input. LVCMOS/LVTTL interface levels.
5
OE
Input
Pullup
Output enable pin. When HIGH, the outputs are active. When LOW, the
outputs are in a high impedance state. LVCMOS/LVTTL interface levels.
6
MR
Input
Pulldown
Active HIGH Master Reset. When logic HIGH, the internal dividers are reset
causing the outputs to go low. When logic LOW, the internal dividers and the
outputs are enabled. LVCMOS/LVTTL interface levels.
7
nPLL_SEL
Input
Pulldown
PLL bypass. When LOW, the output is driven from the VCO output. When
HIGH, the PLL is bypassed and the output frequency = reference clock
frequency/N output divider. LVCMOS/LVTTL interface levels.
8VDDA
Power
Analog supply pin.
10
VDD
Power
Core supply pin.
11,
12
XTAL_OUT,
XTAL_IN
Input
Crystal oscillator interface. XTAL_IN is the input. XTAL_OUT is the output.
13, 19
GND
Power
Power supply ground.
14, 15, 17, 18
Q3, Q2, Q1, Q0
Output
Single-ended clock outputs. 17
typical output impedance.
LVCMOS/ LVTTL interface levels.
16
VDDO
Power
Output supply pin.
Symbol
Parameter
Test Conditions
Minimum
Typical
Maximum
Units
CIN
Input Capacitance
4
pF
CPD
Power Dissipation Capacitance
8
pF
RPULLUP
Input Pullup Resistor
51
k
RPULLDOWN Input Pulldown Resistor
51
k
ROUT
Output Impedance
VDDO = 3.3V±5%
17
VDDO = 2.5V±5%
21
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ICS840004I | 制造商:ICS 制造商全称:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO LVCMOS/LVTTL FREQUENCY SYNTHESIZER |
| ICS840004I-01 | 制造商:IDT 制造商全称:Integrated Device Technology 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TOLVCMOS/LVTTL FREQUENCY SYNTHESIZER |
| ICS840008-01 | 制造商:ICS 制造商全称:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO-LVCMOS/LVTTL FREQUENCY SYNTHESIZER |
| ICS840008AR01 | 制造商:ICS 制造商全称:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO-LVCMOS/LVTTL FREQUENCY SYNTHESIZER |
| ICS840008AR-01 | 制造商:ICS 制造商全称:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO-LVCMOS/LVTTL FREQUENCY SYNTHESIZER |
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