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SN74CB3Q3244PWR 数据表(PDF) 1 Page - Texas Instruments

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部件名 SN74CB3Q3244PWR
功能描述  8-BIT FET BUS SWITCH 2.5-V/3.3-V LOW-VOLTAGE HIGH-BANDWIDTH BUS SWITCH
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制造商  TI1 [Texas Instruments]
网页  http://www.ti.com
标志 TI1 - Texas Instruments

SN74CB3Q3244PWR 数据表(HTML) 1 Page - Texas Instruments

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SN74CB3Q3244
8BIT FET BUS SWITCH
2.5V/3.3V LOW VOLTAGE HIGHBANDWIDTH BUS SWITCH
SCDS154B − OCTOBER 2003 − REVISED DECEMBER 2004
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D High-Bandwidth Data Path
(Up To 500 MHz)
D 5-V-Tolerant I/Os with Device Powered Up
or Powered Down
D Low and Flat ON-State Resistance (ron)
Characteristics Over Operating Range
(ron = 4 Ω Typical)
D 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
D Bidirectional Data Flow, With Near-Zero
Propagation Delay
D Low Input/Output Capacitance Minimizes
Loading and Signal Distortion
(Cio(OFF) = 3.5 pF Typical)
D Fast Switching Frequency
(fOE = 20 MHz Max)
† 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.
D Data and Control Inputs Provide
Undershoot Clamp Diodes
D Low Power Consumption
(ICC = 0.7 mA Typical)
D VCC Operating Range From 2.3 V to 3.6 V
D 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)
D Control Inputs Can Be Driven by TTL or
5-V/3.3-V CMOS Outputs
D Ioff Supports Partial-Power-Down Mode
Operation
D Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
D ESD Performance Tested Per JESD 22
− 2000-V Human-Body Model
(A114-B, Class II)
− 1000-V Charged-Device Model (C101)
D Supports Both Digital and Analog
Applications: Differential Signal Interface,
Memory Interleaving, Bus Isolation,
Low-Distortion Signal Gating
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
1OE
1A1
2B4
1A2
2B3
1A3
2B2
1A4
2B1
GND
VCC
2OE
1B1
2A4
1B2
2A3
1B3
2A2
1B4
2A1
DB, DBQ, DGV, DW, OR PW PACKAGE
(TOP VIEW)
RGY PACKAGE
(TOP VIEW)
120
10
11
2
3
4
5
6
7
8
9
19
18
17
16
15
14
13
12
2OE
1B1
2A4
1B2
2A3
1B3
2A2
1B4
1A1
2B4
1A2
2B3
1A3
2B2
1A4
2B1
description/ordering information
The SN74CB3Q3244 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 SN74CB3Q3244 provides an optimized
interface solution ideally suited for broadband communications, networking, and data-intensive computing
systems.
Copyright
 2004, Texas Instruments Incorporated
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.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.


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