SN74CB3T16211

24BIT FET BUS SWITCH

2.5V/3.3V LOW VOLTAGE BUS SWITCH WITH 5V TOLERANT LEVEL SHIFTER

SCDS147B − OCTOBER 2003 − REVISED JANUARY 2005

2

POST OFFICE BOX 655303

description/ordering information (continued)

VCC

≈VCC

5.5 V

0 V

NOTE A: If the input high-voltage (VIH) level is greater than or equal to VCC − 1 V and less than or equal to 5.5 V, the output high-voltage (VOH)

level is equal to approximately the VCC voltage level.

Input Voltages

Output Voltages

0 V

≈VCC − 1 V

≈VCC − 1 V

VCC

IN

OUT

CB3T

Figure 1. Typical DC Voltage-Translation Characteristics

a pulldown resistor to ground.

The SN74CB3T16211 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.

damaging current will not backflow through the device when it is powered down. The device has isolation during

power off.

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

SN74CB3T16211DL

CB3T16211

SSOP − DL

Tape and reel

SN74CB3T16211DLR

CB3T16211

TSSOP − DGG

Tube

SN74CB3T16211DGG

CB3T16211

−40

°C to 85°C

TSSOP − DGG

Tape and reel

SN74CB3T16211DGGR

CB3T16211

−40 C to 85 C

TVSOP − DGV

Tape and reel

SN74CB3T16211DGVR

KR211

VFBGA − ZQL

(PB-Free)

Tape and reel

SN74CB3T16211ZQLR

KR211

† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design

guidelines are available at www.ti.com/sc/package.