SN74CBTLV3245A Datasheet, PDF (1/11 Pages) Texas Instruments – LOW-VOLTAGE OCTAL FET BUS SWITCH

D Standard ’245-Type Pinout
D 5-Ω Switch Connection Between Two Ports
D Rail-to-Rail Switching on Data I/O Ports
D I_off Supports Partial-Power-Down Mode
Operation
DBQ, DGV, DW, OR PW PACKAGE
(TOP VIEW)
NC 1
A1 2
A2 3
A3 ⁴
A4 ⁵
A5 ⁶
A6 ⁷
A7 ⁸
A8 ⁹
GND ¹⁰
20 V_CC
19 OE
18 B1
17 B2
16 B3
15 B4
14 B5
13 B6
12 B7
11 B8
NC − No internal connection
SN74CBTLV3245A
LOWĆVOLTAGE OCTAL FET BUS SWITCH
SCDS034L − JULY 1997 − REVISED OCTOBER 2003
D Latch-Up Performance Exceeds 250 mA Per
JESD 17
D ESD Protection Exceeds JESD 22
− 2000-V Human-Body Model (A114-A)
− 200-V Machine Model (A115-A)
RGY PACKAGE
(TOP VIEW)
1
A1 2
A2 3
A3 4
A4 5
A5 6
A6 7
A7 8
A8 9
10
20
19 OE
18 B1
17 B2
16 B3
15 B4
14 B5
13 B6
12 B7
11
description/ordering information
NC − No internal connection
The SN74CBTLV3245A provides eight bits of high-speed bus switching in a standard ’245 device pinout. The
low on-state resistance of the switch allows connections to be made with minimal propagation delay.
The device is organized as one 8-bit switch. When output enable (OE) is low, the 8-bit bus switch is on,
and port A is connected to port B. When OE is high, the switch is open, and the high-impedance state exists
between the two 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.
ORDERING INFORMATION
TA
PACKAGE†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
QFN − RGY
Tape and reel
SN74CBTLV3245ARGYR CL245A
−40°C to 85°C
SOIC − DW
SSOP (QSOP) − DBQ
Tube
Tape and reel
Tape and reel
SN74CBTLV3245ADW
SN74CBTLV3245ADWR
SN74CBTLV3245ADBQR
CBTLV3245A
CBTLV3245A
TSSOP − PW
Tape and reel
SN74CBTLV3245APWR
CL245A
TVSOP − DGV
Tape and reel
SN74CBTLV3245ADGVR CL245A
† _{Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are}
available at www.ti.com/sc/package.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
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Copyright  2003, Texas Instruments Incorporated
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