SN74CB3Q16210_07 Datasheet, PDF (2/15 Pages) Texas Instruments – 20-BIT SWITCH 2.5-V/3.3-V LOW-VOLTAGE FET BUS SWITCH

SN74CB3Q16210
20ĆBIT SWITCH
2.5ĆV/3.3ĆV LOWĆVOLTAGE FET BUS SWITCH
SCDS166 − MAY 2004
description/ordering information
The SN74CB3Q16210 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 (r_on). 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 SN74CB3Q16210 provides an optimized
interface solution ideally suited for broadband communications, networking, and data-intensive computing
systems.
The SN74CB3Q16210 is organized as two 10-bit bus switches with separate output-enable (1OE, 2OE) inputs.
It can be used as two 10-bit bus switches or as one 20-bit bus switch. When OE is low, the associated 10-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 10-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 I_off. The I_off circuitry prevents damaging
current backflow through the device when it is powered down. The device has isolation during power off.
To ensure the high-impedance state during power up or power down, OE should be tied to V_CC 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
−40°C to 85°C
SSOP − DL
TSSOP − DGG
Tube
Tape and reel
Tape and reel
SN74CB3Q16210DL
SN74CB3Q16210DLR
SN74CB3Q16210DGGR
CB3Q16210
CB3Q16210
TVSOP − DGV Tape and reel SN74CB3Q16210DGVR BW210
† _{Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are}
available at www.ti.com/sc/package.
INPUT
OE
L
H
FUNCTION TABLE
(each 10-bit bus switch)
INPUT/OUTPUT
A
FUNCTION
B
A port = B port
Z
Disconnect
2
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