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SN74CB3Q3245_05

更新时间： 2024-11-05 05:04:51
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德州仪器 - TI 开关
页数 文件大小 规格书
20页 823K
描述
8-BIT FET BUS SWITCH 2.5-V/3.3-V LOW-VOLTAGE HIGH-BANDWIDTH BUS SWITCH

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SN74CB3Q3245_05 数据手册

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SN74CB3Q3245  
8-BIT FET BUS SWITCH  
2.5-V/3.3-V LOW-VOLTAGE HIGH-BANDWIDTH BUS SWITCH  
www.ti.com  
SCDS124B–JULY 2003–REVISED MARCH 2005  
FEATURES  
•
Data and Control Inputs Provide Undershoot  
Clamp Diodes  
•
High-Bandwidth Data Path  
(1)  
(up to 500 MHz  
)
•
•
•
Low Power Consumption (ICC = 1 mA Typical)  
VCC Operating Range From 2.3 V to 3.6 V  
•
•
Equivalent to IDTQS3VH384 Device  
5-V Tolerant I/Os With Device Powered Up or  
Powered Down  
Data I/Os Support 0- to 5-V Signaling Levels  
(0.8 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V, 5 V)  
•
•
Low and Flat ON-State Resistance (ron)  
Characteristics Over Operating Range  
(ron = 4 Ω Typ)  
•
•
•
•
Control Inputs Can Be Driven by TTL or  
5-V/3.3-V CMOS Outputs  
Ioff Supports Partial-Power-Down Mode  
Operation  
Rail-to-Rail Switching on Data I/O Ports  
– 0- to 5-V Switching With 3.3-V VCC  
– 0- to 3.3-V Switching With 2.5-V VCC  
Latch-Up Performance Exceeds 100 mA Per  
JESD 78, Class II  
ESD Performance Tested Per JESD 22  
•
•
Bidirectional Data Flow With Near-Zero  
Propagation Delay  
– 2000-V Human-Body Model  
(A114-B, Class II)  
Low Input/Output Capacitance Minimizes  
Loading and Signal Distortion  
(Cio(OFF) = 3.5 pF Typ)  
– 1000-V Charged-Device Model (C101)  
•
Supports Both Digital and Analog  
•
Fast Switching Frequency (fOE = 20 MHz Max)  
Applications: PCI Interface, Differential Signal  
Interface, Memory Interleaving, Bus Isolation,  
Low-Distortion Signal Gating  
(1) For additional information regarding the performance  
characteristics of the CB3Q family, refer to the TI application  
report, CBT-C, CB3T, and CB3Q Signal-Switch Families,  
literature number SCDA008.  
DBQ, DGV, OR PW PACKAGE  
(TOP VIEW)  
RGY PACKAGE  
(TOP VIEW)  
1
2
3
4
5
6
7
8
9
10  
20  
V
CC  
NC  
A1  
A2  
A3  
A4  
A5  
A6  
A7  
A8  
19 OE  
18 B1  
17 B2  
16 B3  
15 B4  
14 B5  
13 B6  
12 B7  
11 B8  
1
20  
19  
18  
17  
16  
15  
14  
13  
12  
2
3
4
5
6
7
8
9
A1  
A2  
A3  
A4  
A5  
A6  
A7  
A8  
OE  
B1  
B2  
B3  
B4  
B5  
B6  
B7  
GND  
10  
11  
NC - No internal connection  
NC - No internal connection  
DESCRIPTION/ORDERING INFORMATION  
The SN74CB3Q3245 is a high-bandwidth FET bus switch utilizing a charge pump to elevate the gate voltage of  
the pass transistor, providing a low and flat ON-state resistance (ron). The low and flat ON-state resistance allows  
for minimal propagation delay and supports rail-to-rail switching on the data input/output (I/O) ports. The device  
also features low data I/O capacitance to minimize capacitive loading and signal distortion on the data bus.  
Specifically designed to support high-bandwidth applications, the SN74CB3Q3245 provides an optimized  
interface solution ideally suited for broadband communications, networking, and data-intensive computing  
systems.  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas  
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
PRODUCTION DATA information is current as of publication date.  
Copyright © 2003–2005, Texas Instruments Incorporated  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
1234567...20

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