- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄8056 > 74LVX4245WM (Fairchild Semiconductor)IC TXRX 8BIT DUAL 3ST 24-SOIC PDF資料下載
參數(shù)資料
| 型號(hào)： | 74LVX4245WM |
| 廠商： | Fairchild Semiconductor |
| 文件頁數(shù)： | 5/8頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC TXRX 8BIT DUAL 3ST 24-SOIC |
| 產(chǎn)品培訓(xùn)模塊： | Logic Translator Solutions |
| 產(chǎn)品變化通告： | Product Discontinuation 27/Feb/2012 |
| 標(biāo)準(zhǔn)包裝： | 30 |
| 系列： | 74LVX |
| 邏輯類型： | 收發(fā)器，非反相 |
| 元件數(shù)： | 1 |
| 每個(gè)元件的位元數(shù)： | 8 |
| 輸出電流高，低： | 12mA，12mA; 24mA，24mA |
| 電源電壓： | 2.7 V ~ 3.6 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： | 管件 |
| 產(chǎn)品目錄頁面： | 1212 (CN2011-ZH PDF) |
5
www.fairchildsemi.com
74
L
V
X
4
24
5
Capacitance
Note 10: CPD is measured at 10 MHz
8-Bit Dual Supply Translating Transceiver
The LVX4245 is a dual supply device capable of bidirec-
tional signal translation. This level shifting ability provides
an efficient interface between low voltage CPU local bus
with memory and a standard bus defined by 5V I/O levels.
The device control inputs can be controlled by either the
low voltage CPU and core logic or a bus arbitrator with 5V
I/O levels.
Manufactured on a sub-micron CMOS process, the
LVX4245 is ideal for mixed voltage applications such as
notebook computers using 3.3V CPU’s and 5V peripheral
devices.
Power Up Considerations
To insure the system does not experience unnecessary ICC
current draw, bus contention, or oscillations during power
up, the following guidelines should be adhered to (refer to
Table 1):
Power up the control side of the device first. This is the
VCCA.
OE should ramp with or ahead of VCCA. This will help
guard against bus contention.
The Transmit/Receive control pin (T/R) should ramp with
or ahead of VCCA, this will ensure that the A Port data
pins are configured as inputs. With VCCA receiving
power first, the A I/O Port should be configured as inputs
to help guard against bus contention and oscillations.
A side data inputs should be driven to a valid logic level.
This will prevent excessive current draw.
The above steps will ensure that no bus contention or oscil-
lations, and therefore no excessive current draw occurs
during the power up cycling of these devices. These steps
will help prevent possible damage to the translator devices
and potential damage to other system components.
TABLE 1. Low Voltage Translator Power Up Sequencing Table
Please reference Application Note AN-5001 for more detailed information on using Fairchild’s LVX Low Voltage Dual
Supply CMOS Translating Transceivers.
Symbol
Parameter
Typ
Units
Conditions
CIN
Input Capacitance
4.5
pF
VCC = Open
CI/O
Input/Output
15
pF
VCCA = 5.0V
Capacitance
VCCB = 3.3V
CPD
Power Dissipation
B
→A55
pF
VCCA = 5.0V
Capacitance (Note 10)
A
→B40
pF
VCCB = 3.3V
Device Type
VCCA
VCCB
T/R
OE
A Side
I/O
B Side
Floatable Pin
Allowed
74LVX4245
5V
3V
ramp
logic
outputs
No
(power up 1st)
(power up 2nd)
with VCCA
0V or VCCA
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MC14569BDWR2G | IC COUNTER DUAL 4BIT 4 16-SOIC |
| MC14520BDWG | IC COUNTER DUAL BINARY 16-SOIC |
| MC74AC4040DR2G | IC COUNTER RIPPLE 12ST 16-SOIC |
| 74LCX652MTC | IC TXRX/REGISTER LV 5V 24TSSOP |
| PI74FCT2541ATSEX | IC BUFF/DVR OCTAL N-INV 20SOIC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74LVX4245WM | 制造商:Fairchild Semiconductor Corporation 功能描述:IC 74LVX SMD 74LVX4245 SOIC24 |
| 74LVX4245WM_Q | 功能描述:總線收發(fā)器 8-Bit Dl Supp 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 |
| 74LVX4245WMX | 功能描述:總線收發(fā)器 8-Bit Dl Supp 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 |
| 74LVX4245WMX | 制造商:Fairchild Semiconductor Corporation 功能描述:Translator Logic IC |
| 74LVX541M | 功能描述:緩沖器和線路驅(qū)動(dòng)器 Octal Buff/Line Drv RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。