Datasheet


   
      
SCDS122A − JULY 2003 − REVISED OCTOBER 2003
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
description/ordering information (continued)
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
T
A
PACKAGE
†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
QFN − RGY Tape and reel SN74CBT3125CRGYR CU125C
SOIC − D
Tube SN74CBT3125CD
CBT3125C
SOIC − D
Tape and reel SN74CBT3125CDR
CBT3125C
SSOP − DB
Tube SN74CBT3125CDB
CU125C
−40°C to 85°C
SSOP − DB
Tape and reel SN74CBT3125CDBR
CU125C
−40 C to 85 C
SSOP (QSOP) − DBQ Tape and reel SN74CBT3125CDBQR CU125C
TSSOP − PW
Tube SN74CBT3125CPW
CU125C
TSSOP − PW
Tape and reel SN74CBT3125CPWR
CU125C
TVSOP − DGV Tape and reel SN74CBT3125CDGVR CU125C
†
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines
are available at www.ti.com/sc/package.
FUNCTION TABLE
(each bus switch)
INPUT
INPUT/OUTPUT
FUNCTION
INPUT
OE
INPUT/OUTPUT
A
FUNCTION
L B A port = B port
H Z Disconnect
logic diagram (positive logic)
1A
1OE
SW
1B
3A
3OE
SW
3B
2A
2OE
SW
2B
4A
4OE
SW
4B
2
1
9
10
3
8
5
4
12
13
6
11
Pin numbers shown are for the D, DB, DGV, PW, and RGY packages.