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SN74CB3Q3305PWE4 Arkusz danych(PDF) 1 Page - Texas Instruments

Numer części SN74CB3Q3305PWE4
Szczegółowy opis  DUAL FET BUS SWITCH 2.5V/3.3V LOW VOLTAGE HIGH BANDWIDTH BUS SWITCH
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Producent  TI [Texas Instruments]
Strona internetowa  http://www.ti.com
Logo TI - Texas Instruments

SN74CB3Q3305PWE4 Arkusz danych(HTML) 1 Page - Texas Instruments

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FEATURES
PW PACKAGE
(TOP VIEW)
1
2
3
4
8
7
6
5
1OE
1A
1B
GND
VCC
2OE
2B
2A
DESCRIPTION/ORDERING INFORMATION
SN74CB3Q3305
DUAL FET BUS SWITCH
2.5-V/3.3-V LOW-VOLTAGE HIGH-BANDWIDTH BUS SWITCH
SCDS141A – OCTOBER 2003 – REVISED APRIL 2005
Data and Control Inputs Provide Undershoot
Clamp Diodes
High-Bandwidth Data Path (up to 500 MHz (1))
Low Power Consumption (I
CC = 0.25 mA Typ)
5-V Tolerant I/Os With Device Powered Up or
Powered Down
V
CC Operating Range From 2.3 V to 3.6 V
Low and Flat ON-State Resistance (r
on)
Data I/Os Support 0- to 5-V Signaling Levels
Characteristics Over Operating Range
(0.8 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V, 5 V)
(r
on = 3 Ω Typ)
Control Inputs Can Be Driven by TTL or
Rail-to-Rail Switching on Data I/O Ports
5-V/3.3-V CMOS Outputs
– 0- to 5-V Switching With 3.3-V V
CC
I
off Supports Partial-Power-Down Mode
Operation
– 0- to 3.3-V Switching With 2.5-V V
CC
Latch-Up Performance Exceeds 100 mA Per
Bidirectional Data Flow With Near-Zero
JESD 78, Class II
Propagation Delay
ESD Performance Tested Per JESD 22
Low Input/Output Capacitance Minimizes
Loading and Signal Distortion
– 2000-V Human-Body Model
(C
io(OFF) = 3.5 pF Typ)
(A114-B, Class II)
Fast Switching Frequency (f
OE = 20 MHz Max)
– 1000-V Charged-Device Model (C101)
Supports Both Digital and Analog
(1)
For additional information regarding the performance
Applications: USB Interface, Differential
characteristics of the CB3Q family, refer to the TI application
Signal Interface, Bus Isolation, Low-Distortion
report, CBT-C, CB3T, and CB3Q Signal-Switch Families,
literature number SCDA008.
Signal Gating
The SN74CB3Q3305 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 SN74CB3Q3305 provides an optimized
interface solution ideally suited for broadband communications, networking, and data-intensive computing
systems.
The SN74CB3Q3305 is organized as two 1-bit switches with separate output-enable (1OE, 2OE) inputs. It can
be used as two 1-bit bus switches or as one 2-bit bus switch. When OE is high, the associated 1-bit bus switch is
ON and the A port is connected to the B port, allowing bidirectional data flow between ports. When OE is low, the
associated 1-bit bus switch is OFF and a high-impedance state exists between the A and B ports.
ORDERING INFORMATION
TA
PACKAGE(1)
ORDERABLE PART NUMBER
TOP-SIDE MARKING
Tube
SN74CB3Q3305PW
–40°C to 85°C
TSSOP – PW
BU305
Tape and reel
SN74CB3Q3305PWR
(1)
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.ti.com/sc/package.
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.


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