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SN74LVC1T45-Q1 参数 Datasheet PDF下载

SN74LVC1T45-Q1图片预览
型号: SN74LVC1T45-Q1
PDF下载: 下载PDF文件 查看货源
内容描述: 可配置电压转换和3态输出的单位双电源总线收发器 [SINGLE-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS]
分类和应用: 总线收发器输出元件
文件页数/大小: 20 页 / 542 K
品牌: TI [ TEXAS INSTRUMENTS ]
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SN74LVC1T45-Q1  
www.ti.com .......................................................................................................................................... SCES677A SEPTEMBER 2006REVISED AUGUST 2009  
Operating Characteristics  
TA = 25°C  
VCCA  
VCCB = 1.8 V  
=
VCCA  
VCCB = 2.5 V  
=
VCCA  
VCCB = 3.3 V  
=
VCCA =  
VCCB = 5 V  
TEST  
CONDITIONS  
PARAMETER  
UNIT  
TYP  
TYP  
TYP  
TYP  
A-port input,  
B-port output  
3
18  
18  
3
4
19  
19  
4
4
20  
20  
4
4
21  
21  
4
CL = 0 pF,  
f = 10 MHz,  
tr = tf = 1 ns  
(1)  
CpdA  
pF  
B-port input,  
A-port output  
A-port input,  
B-port output  
CL = 0 pF,  
f = 10 MHz,  
tr = tf = 1 ns  
(1)  
CpdB  
pF  
B-port input,  
A-port output  
(1) Power dissipation capacitance per transceiver  
Power-Up Considerations  
A proper power-up sequence always should be followed to avoid excessive supply current, bus contention,  
oscillations, or other anomalies. To guard against such power-up problems, take the following precautions:  
1. Connect ground before any supply voltage is applied.  
2. Power up VCCA  
.
3. VCCB can be ramped up along with or after VCCA  
.
Copyright © 2006–2009, Texas Instruments Incorporated  
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Product Folder Link(s): SN74LVC1T45-Q1  
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