参数资料
| 型号： | 74LVX3245WMX |
| 厂商： | Fairchild Semiconductor |
| 文件页数： | 5/9页 |
| 文件大小： | 0K |
| 描述： | IC TRANSCEIVER 8BIT 24SOIC |
| 产品变化通告： | Product Discontinuation 27/Feb/2012 |
| 标准包装： | 1 |
| 系列： | 74LVX |
| 逻辑功能： | 变换器，3 态 |
| 位数： | 8 |
| 输入类型： | 逻辑 |
| 输出类型： | 逻辑 |
| 通道数： | 8 |
| 输出/通道数目： | 1 |
| 差分 - 输入:输出： | 无/无 |
| 传输延迟（最大）： | 5.6ns |
| 电源电压： | 2.7 V ~ 3.6 V，4.5 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 24-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 24-SOIC |
| 包装： | 标准包装 |
| 其它名称： | 74LVX3245WMXDKR |
5
www.fairchildsemi.com
Capacitance
Symbol
Parameter
Typ
Units
Conditions
CIN
Input Capacitance
4.5
pF
VCC = Open
CI/O
Input/Output
15
pF
VCCA = 3.3V
Capacitance
VCCB = 5.0V
CPD
Power Dissipation
A
→ B
55
pF
VCCB = 5.0V
Capacitance (Note 9)
B
→ A
40
VCCA = 3.3V
Note 9: CPD is measured at 10 MHz
8-Bit Dual Supply Translating Transceiver
The LVX3245 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
LVX3245 is ideal for mixed voltage applications such as
notebook computers using 3.3V CPU's and 5V peripheral
devices.
Power Up Considerations
To insure that the system does not experience unneces-
sary 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
VCCA, this will ensure that the A Port data pins are con-
figured 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
Device Type
VCCA
VCCB
T/R
OE
A Side I/O
B Side I/O
Floatable Pin
Allowed
74LVX3245
3V
5V
ramp
logic
outputs
No
(power up 1st)
configurable
with VCCA
0V or VCCA
Please reference Application Note AN-5001 for more detailed information on using Fairchild’s LVX Low Voltage Dual
Supply CMOS Translating Transceivers.
相关PDF资料 |
PDF描述 |
|---|---|
| 74LVX32SJX | IC GATE OR QUAD 2IN LV 14SOP |
| 74LVX4245WMX | IC TXRX TRANSL DUAL 8BIT 24-SOIC |
| 74LVX541SJX | IC BUFF/DVR TRI-ST 8BIT 20SOP |
| 74LVX86SJX | IC GATE EXCL-OR QUAD 2IN 14SOP |
| 74LVXC4245MTCX | TXRX 8BIT DUAL CONF VOLT 24TSSOP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 74LVX32M | 功能描述:逻辑门 Quad 2-Input OR Gate RoHS:否 制造商:Texas Instruments 产品:OR 逻辑系列:LVC 栅极数量:2 线路数量（输入/输出）:2 / 1 高电平输出电流:- 16 mA 低电平输出电流:16 mA 传播延迟时间:3.8 ns 电源电压-最大:5.5 V 电源电压-最小:1.65 V 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:DCU-8 封装:Reel |
| 74LVX32M | 制造商:Fairchild Semiconductor Corporation 功能描述:74LVX SMD 74LVX32 SOIC14 3.6V |
| 74LVX32M_Q | 功能描述:逻辑门 Quad 2-Input OR Gate RoHS:否 制造商:Texas Instruments 产品:OR 逻辑系列:LVC 栅极数量:2 线路数量（输入/输出）:2 / 1 高电平输出电流:- 16 mA 低电平输出电流:16 mA 传播延迟时间:3.8 ns 电源电压-最大:5.5 V 电源电压-最小:1.65 V 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:DCU-8 封装:Reel |
| 74LVX32MTC | 功能描述:逻辑门 Quad 2-Input OR Gate RoHS:否 制造商:Texas Instruments 产品:OR 逻辑系列:LVC 栅极数量:2 线路数量（输入/输出）:2 / 1 高电平输出电流:- 16 mA 低电平输出电流:16 mA 传播延迟时间:3.8 ns 电源电压-最大:5.5 V 电源电压-最小:1.65 V 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:DCU-8 封装:Reel |
| 74LVX32MTC_Q | 功能描述:逻辑门 Quad 2-Input OR Gate RoHS:否 制造商:Texas Instruments 产品:OR 逻辑系列:LVC 栅极数量:2 线路数量（输入/输出）:2 / 1 高电平输出电流:- 16 mA 低电平输出电流:16 mA 传播延迟时间:3.8 ns 电源电压-最大:5.5 V 电源电压-最小:1.65 V 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:DCU-8 封装:Reel |
发布紧急采购，3分钟左右您将得到回复。