SN74CB3T16210 Datasheet, PDF (2/14 Pages) Texas Instruments – 2.5-V/3.3-V LOW-VOLTAGE BUS SWITCH WITH 5-V-TOLERANT LEVEL SHIFTER

SN74CB3T16210
20-BIT FET BUS SWITCH
2.5-V/3.3-V LOW-VOLTAGE BUS SWITCH WITH 5-V-TOLERANT LEVEL SHIFTER
SCDS156A – OCTOBER 2003 – REVISED MARCH 2005
www.ti.com
DESCRIPTION/ORDERING INFORMATION (CONTINUED)
The SN74CB3T16210 is organized as two 10-bit bus switches with separate ouput-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 feature ensures that damaging
current will not 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.
T_A
–40°C to 85°C
ORDERING INFORMATION
PACKAGE ⁽¹⁾
ORDERABLE PART NUMBER
TSSOP – DGG
Tape and reel
SN74CB3T16210DGGR
TVSOP – DGV
Tape and reel
SN74CB3T16210DGVR
TOP-SIDE MARKING
CB3T16210
KR210
(1) 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
B
Z
FUNCTION
A port = B port
Disconnect
V_CC
5.5 V
V_CC
9V_CC - 1 V
IN
OUT
CB3T
9V_CC
9V_CC - 1 V
0V
0V
Input Voltages
Output Voltages
If the input high voltage (V_IH) level is greater than or equal to V_CC - 1 V, and less than or equal to 5.5 V, the output high voltage (V_OH) level will
be equal to approximately the V_CC voltage level.
Figure 1. Typical DC Voltage Translation Characteristics
2