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74LVCH16245A PDF预览

74LVCH16245A

更新时间: 2024-11-26 14:57:31
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瑞萨 - RENESAS /
页数 文件大小 规格书
7页 466K
描述
3.3V CMOS 16-Bit Bus Transceiver with 3-State Outputs, 5.0V Tolerant I/O, and Bus-Hold

74LVCH16245A 数据手册

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IDT74LVCH16245A  
3.3V CMOS 16-BIT  
BUS TRANSCEIVER  
WITH 3-STATE OUTPUTS,  
5 VOLT TOLERANT I/O AND BUS-HOLD  
DESCRIPTION:  
FEATURES:  
This 16-bit bus transceiver is built using advanced dual metal CMOS  
• Typical tSK(o) (Output Skew) < 250ps  
• ESD > 2000V per MIL-STD-883, Method 3015; > 200V using  
machine model (C = 200pF, R = 0)  
technology. This high-speed, low power transceiver is ideal for asynchro-  
nous communication between two busses (A and B). The Direction and  
Output Enable controls are designed to operate this device as either two  
independent 8-bit transceivers or one 16-bit transceiver. The direction  
control pin (DIR) controls the direction of data flow. The output enable pin  
(OE) overrides the direction control and disables both ports. All inputs are  
designed with hysteresis for improved noise margin.  
• VCC = 3.3V ± 0.3V, Normal Range  
• VCC = 2.7V to 3.6V, Extended Range  
• CMOS power levels (0.4μ W typ. static)  
• All inputs, outputs, and I/O are 5V tolerant  
• Available in SSSOP and TSSOP packages  
Allpinscanbedrivenfromeither3.3Vor5Vdevices. Thisfeatureallows  
the use of this device as a translator in a mixed 3.3V/5V supply system.  
TheLVCH16245Ahasbeendesignedwitha±24mAoutputdriver. This  
driver is capable of driving a moderate to heavy load while maintaining  
speedperformance.  
DRIVE FEATURES:  
• High Output Drivers: ±24mA  
• Reduced system switching noise  
The LVCH16245A has “bus-hold” which retains the inputs' last state  
whenevertheinputgoestoahighimpedance. Thispreventsfloatinginputs  
and eliminates the need for pull-up/down resistors.  
APPLICATIONS:  
• 5V and 3.3V mixed voltage systems  
• Data communication and telecommunication systems  
FUNCTIONALBLOCKDIAGRAM  
24  
1
1DIR  
2DIR  
25  
48  
1OE  
1B1  
2OE  
36  
47  
1A1  
2A1  
2
13  
2B1  
35  
46  
1A2  
3
2A2  
14  
1B2  
1B3  
2B2  
33  
44  
1A3  
2A3  
16  
5
2B3  
32  
43  
1A4  
2A4  
6
17  
1B4  
1B5  
1B6  
2B4  
41  
30  
1A5  
2A5  
8
19  
2B5  
40  
29  
1A6  
2A6  
9
20  
2B6  
38  
27  
1A7  
2A7  
11  
22  
1B7  
1B8  
2B7  
26  
37  
1A8  
2A8  
23  
12  
2B8  
INDUSTRIAL TEMPERATURE RANGE  
OCTOBER 2015  
1
DSC-4596/5  

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