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SN74CB3Q16211DGGR 数据表(PDF) 2 Page - Texas Instruments

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部件名 SN74CB3Q16211DGGR
功能描述  24 BIT SWITCH 2.5-V/3.3-V LOW-VOLTAGE FET BUS SWITCH
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 TI - Texas Instruments

SN74CB3Q16211DGGR 数据表(HTML) 2 Page - Texas Instruments

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SN74CB3Q16211
24BIT SWITCH
2.5V/3.3V LOW VOLTAGE FET BUS SWITCH
SCDS167 − MAY 2004
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
description/ordering information
The SN74CB3Q16211 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 SN74CB3Q16211 provides an optimized
interface solution ideally suited for broadband communications, networking, and data-intensive computing
systems.
The SN74CB3Q16211 is organized as two 12-bit bus switches with separate output-enable (1OE, 2OE) inputs.
It can be used as two 12-bit bus switches or as one 24-bit bus switch. When OE is low, the associated 12-bit
bus switch is ON and the A port is connected to the B port, allowing bidirectional data flow between ports. When
OE is high, the associated 12-bit bus switch is OFF, and a high-impedance state exists between the A and B
ports.
This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry prevents damaging
current backflow through the device when it is powered down.
To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
ORDERING INFORMATION
TA
PACKAGE†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
SSOP − DL
Tube
SN74CB3Q16211DL
CB3Q16211
SSOP − DL
Tape and reel
SN74CB3Q16211DLR
CB3Q16211
−40
°C to 85°C
TSSOP − DGG
Tape and reel
SN74CB3Q16211DGGR
CB3Q16211
−40 C to 85 C
TVSOP − DGV
Tape and reel
SN74CB3Q16211DGVR
BW211
VFBGA − GQL
Tape and reel
SN74CB3Q16211GQLR
† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
terminal assignments
123456
A
1A2
1A1
NC
1OE
2OE
1B1
B
1A5
1A4
1A3
1B2
1B3
1B4
C
1A7
GND
1A6
1B5
GND
1B6
D
1A10
1A8
1A9
1B8
1B7
1B9
E
1A12
1A11
1B10
1B11
F
2A1
2A2
2B1
1B12
G
VCC
GND
2A3
2B3
GND
2B2
H
2A4
2A5
2A6
2B6
2B5
2B4
J
2A7
2A8
2A9
2B9
2B8
2B7
K
2A10
2A11
2A12
2B12
2B11
2B10
NC − No internal connection
GQL PACKAGE
(TOP VIEW)
A
B
C
D
E
F
G
H
J
K
1
2345
6


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