- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385198 > BU8242F (Rohm CO.,LTD.) Cross point mixer for telephones PDF資料下載
參數(shù)資料
| 型號： | BU8242F |
| 廠商： | Rohm CO.,LTD. |
| 英文描述： | Cross point mixer for telephones |
| 中文描述： | 交叉點的電話混合器 |
| 文件頁數(shù)： | 9/11頁 |
| 文件大小： | 215K |
| 代理商： | BU8242F |
274
Communication ICs
BU8241F / BU8241FS / BU8242F / BU8244F
Operation notes
(1) Turning on the power supply
When the power supply is turned on, the shift register is
in an indeterminate state. After turning on the power sup-
ply, switch settings should be entered by supplying shift
clock pulses to shift 64 bits of data into the shift register,
and then setting the LATCH pin to HIGH. (For the
BU8244, send 16 clock pulses.)
(2) Setting serial data
If the number of bits shifted or clock pulses applied is less
than or more than the number stated above, the switches
will not be set properly. Never apply shift clock pulses
when the LATCH pin is HIGH. Doing so will change the
data latch contents.
(3) Drive impedance
The input impedance Zin is 80
±
32k
.
To suppress input gain and loss, we recommend using
the drive impedance shown in the table below.
If the level is to be attenuated at the input pin, make sure
the level is not affected by the internal resistance of the
IC, as shown in Figure 10. This can cause gain and/or
loss.
(4) Gain and noise when mixing signals
Increasing the number of signals mixed in a single output
(increasing the number of switches connected to the
same output amplifier that are on) causes a slight drop
in gain. With the BU8241 and BU8241FS /
BU8242F, increasing the number of signals mixed in a
single output (increasing the number of switches con-
nected to the same output amplifier that are on) causes
a slight increase in the noise level in terms of logic. If
noise is a problem, we recommend limiting the number
of signals mixed in a single output.
(5) Output load capacitance
The capacitance connected to GND in relation to an out-
put pin (the output load capacitance) should be kept to
50pF or lower. (BU8241F/BU8241FS/ BU8242F)
Electrical characteristic curves
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| BU8244F | Cross point mixer for telephones |
| BU8310AK | Panel interface |
| BU8311KS | Panel interface |
| BU8313K | Panel interface |
| BU9206 | PS / 2 Mouse Controller |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| BU8242F-E2 | 功能描述:IC CROSSPOINT SWITCH 6X6 20SOP RoHS:是 類別:集成電路 (IC) >> 接口 - 模擬開關(guān)，多路復(fù)用器，多路分解器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 功能:多路復(fù)用器 電路:1 x 4:1 導(dǎo)通狀態(tài)電阻:- 電壓電源:雙電源 電壓 - 電源，單路/雙路(±):±5V 電流 - 電源:7mA 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC 包裝:帶卷 (TR) |
| BU8244F | 制造商:ROHM 制造商全稱:Rohm 功能描述:Cross point mixer for telephones |
| BU8244F-E2 | 功能描述:IC CROSSPOINT SWITCH 4X4 16SOP RoHS:是 類別:集成電路 (IC) >> 接口 - 模擬開關(guān)，多路復(fù)用器，多路分解器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 功能:多路復(fù)用器 電路:1 x 4:1 導(dǎo)通狀態(tài)電阻:- 電壓電源:雙電源 電壓 - 電源，單路/雙路(±):±5V 電流 - 電源:7mA 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC 包裝:帶卷 (TR) |
| BU8254KVT | 制造商:ROHM Semiconductor 功能描述: |
| BU8254KVT-E2 | 制造商:ROHM Semiconductor 功能描述:LVDS INTERFACE IC;8MHZ TO 150MHZ WIDE CLOCK RANGE;TQFPV PKG - Tape and Reel 制造商:ROHM Semiconductor 功能描述:IC TRANSMITTER LVDS 64-TQFP 制造商:ROHM Semiconductor 功能描述:LVDS INTERF IC 8-150MHZ CLOCK RANGE |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。