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參數(shù)資料
| 型號(hào)： | 74LVXC3245MTC |
| 廠商： | Fairchild Semiconductor |
| 文件頁(yè)數(shù)： | 5/9頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC TRANSCVR TRI-ST 8BIT 24TSSOP |
| 產(chǎn)品培訓(xùn)模塊： | Logic Translator Solutions |
| 標(biāo)準(zhǔn)包裝： | 61 |
| 系列： | 74LVXC |
| 邏輯功能： | 變換器，3 態(tài) |
| 位數(shù)： | 8 |
| 輸入類型： | TTL |
| 輸出類型： | 邏輯 |
| 通道數(shù)： | 8 |
| 輸出/通道數(shù)目： | 1 |
| 差分 - 輸入:輸出： | 無/無 |
| 傳輸延遲（最大）： | 4.8ns |
| 電源電壓： | 2.7 V ~ 3.6 V，3 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 24-TSSOP（0.173"，4.40mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 24-TSSOP |
| 包裝： | 管件 |
| 產(chǎn)品目錄頁(yè)面： | 1212 (CN2011-ZH PDF) |
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 |
|---|---|
| 74LVXC3245MTC | 制造商:Fairchild Semiconductor Corporation 功能描述:Translator Logic IC |
| 74LVXC3245MTC_Q | 功能描述:總線收發(fā)器 8-Bit Dual Sup Trans RoHS:否 制造商:Fairchild Semiconductor 邏輯類型:CMOS 邏輯系列:74VCX 每芯片的通道數(shù)量:16 輸入電平:CMOS 輸出電平:CMOS 輸出類型:3-State 高電平輸出電流:- 24 mA 低電平輸出電流:24 mA 傳播延遲時(shí)間:6.2 ns 電源電壓-最大:2.7 V, 3.6 V 電源電壓-最小:1.65 V, 2.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-48 封裝:Reel |
| 74LVXC3245MTCX | 功能描述:總線收發(fā)器 8-Bit Dual Sup Trans RoHS:否 制造商:Fairchild Semiconductor 邏輯類型:CMOS 邏輯系列:74VCX 每芯片的通道數(shù)量:16 輸入電平:CMOS 輸出電平:CMOS 輸出類型:3-State 高電平輸出電流:- 24 mA 低電平輸出電流:24 mA 傳播延遲時(shí)間:6.2 ns 電源電壓-最大:2.7 V, 3.6 V 電源電壓-最小:1.65 V, 2.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-48 封裝:Reel |
| 74LVXC3245MTCX-CUT TAPE | 制造商:FAIRCHILD 功能描述:74LVXC Series 3.6 V 8-Bit Dual Supply Configurable Voltage Interface Transceiver |
| 74LVXC3245MTR | 功能描述:總線收發(fā)器 Octal Bus Tansceiver RoHS:否 制造商:Fairchild Semiconductor 邏輯類型:CMOS 邏輯系列:74VCX 每芯片的通道數(shù)量:16 輸入電平:CMOS 輸出電平:CMOS 輸出類型:3-State 高電平輸出電流:- 24 mA 低電平輸出電流:24 mA 傳播延遲時(shí)間:6.2 ns 電源電壓-最大:2.7 V, 3.6 V 電源電壓-最小:1.65 V, 2.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-48 封裝:Reel |
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