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參數(shù)資料
| 型號： | 74LVXC4245WMX |
| 廠商： | Fairchild Semiconductor |
| 文件頁數(shù)： | 5/9頁 |
| 文件大?。?/td> | 0K |
| 描述： | TXRX 8BIT DUAL CONF VOLT 24SOIC |
| 產(chǎn)品培訓(xùn)模塊： | Logic Translator Solutions |
| 產(chǎn)品變化通告： | Product Discontinuation 27/Feb/2012 |
| 標準包裝： | 1,000 |
| 系列： | 74LVXC |
| 邏輯類型： | 收發(fā)器，非反相 |
| 元件數(shù)： | 1 |
| 每個元件的位元數(shù)： | 8 |
| 輸出電流高，低： | 24mA，24mA |
| 電源電壓： | 2.7 V ~ 5.5 V，4.5 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 24-SOIC（0.295"，7.50mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 24-SOIC |
| 包裝： | 帶卷 (TR) |
LA4708N
No. A1783-5/9
Features of IC Inside and Usage Notes
Standby function
Pin 5 is the standby switch pin. The amplifier is
turned on by applying approximately 2.5V or more
to this pin through an external resistor (R1).
If voltage in excess of 13.2V is to be applied to the
standby switch, calculate the value of R1 using the
following formula so that the current flowing into
pin 5 is 500
A or less:
R1 =
10k
Mute function
Pin 6 is the connector for the capacitor that determines the on time in order to prevent pop noise. By grounding this
pin, the amplifier can implement mute operation. In this case, the recovery time depends on C3.
How to reduce pop noise
Although the LA4708N reduces pop noise, an electrolytic capacitor of between 0.47 and 2.2F can be connected
between pin 8 and the pre-GND to further reduce pop noise that occurs when power supply is turned on/off
(standby switch on/off). The larger the capacitance, the lower the frequency of pop noise, and it is barely audible,
but sound residue of the sound signal is liable to linger when power is turned off. Pin 8 is the bias pin for the output
amplifier and normally is left open.
Protectors
In an output-to-ground and output-to-VCC short protector system configuration, if a DC resistor is connected
between amplifier output pin and GND, the protector may operate, causing the amplifier not to start operating.
Therefore, as a general rule, no DC resistor should be connected between amplifier output pin and GND.
In order to prevent damage or degradation which may be caused by abnormally heated IC, the LA4708N has a thermal
shutdown protector. Accordingly, if the IC junction temperature (Tj) climbs to around 170 to 180
C due to inadequate
heat dissipation, the thermal shutdown protector will operate to control the output gradually into attenuation.
Also be fully careful of handling other protectors built in the LA4708N.
Miscellaneous
Since pins 1 and 9, which are unused, are connected internally, they must be left open.
Pin 10 is an NC pin (no internal connection).
Applied voltage
1.4V
500
A
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74LVXC4245WMX | 制造商:Fairchild Semiconductor Corporation 功能描述:IC UNIVERSAL BUS FUNCTIONS LOGIC ROHS C |
| 74LVXU04MTR | 功能描述:變換器 Hex Inverter RoHS:否 制造商:NXP Semiconductors 電路數(shù)量:6 邏輯系列:74ABT 邏輯類型:BiCMOS 高電平輸出電流:- 15 mA 低電平輸出電流:20 mA 傳播延遲時間:2.2 ns 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 工作溫度范圍: 封裝 / 箱體:DIP-14 封裝:Tube |
| 74LVXU04TTR | 功能描述:變換器 Hex Inverter RoHS:否 制造商:NXP Semiconductors 電路數(shù)量:6 邏輯系列:74ABT 邏輯類型:BiCMOS 高電平輸出電流:- 15 mA 低電平輸出電流:20 mA 傳播延遲時間:2.2 ns 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 工作溫度范圍: 封裝 / 箱體:DIP-14 封裝:Tube |
| 74LVXZ161284MEA | 功能描述:轉(zhuǎn)換 - 電壓電平 RoHS:否 制造商:Micrel 類型:CML/LVDS/LVPECL to LVCMOS/LVTTL 傳播延遲時間:1.9 ns 電源電流:14 mA 電源電壓-最大:3.6 V 電源電壓-最小:3 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:MLF-8 |
| 74LVXZ161284MEX | 功能描述:轉(zhuǎn)換 - 電壓電平 RoHS:否 制造商:Micrel 類型:CML/LVDS/LVPECL to LVCMOS/LVTTL 傳播延遲時間:1.9 ns 電源電流:14 mA 電源電壓-最大:3.6 V 電源電壓-最小:3 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:MLF-8 |
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