SN74CBTLV3257_10 Datasheet, PDF (1/20 Pages) Texas Instruments – LOW-VOLTAGE 4-BIT 1-OF-2 FET MULTIPLEXER/DEMULTIPLEXER

SN74CBTLV3257
LOWĆVOLTAGE 4ĆBIT 1ĆOFĆ2 FET MULTIPLEXER/DEMULTIPLEXER
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
D Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
SCDS040I − DECEMBER 1997 − REVISED OCTOBER 2003
D ESD Protection Exceeds JESD 22
− 2000-V Human-Body Model (A114-A)
− 200-V Machine Model (A115-A)
D, DBQ, DGV, OR PW PACKAGE
(TOP VIEW)
RGY PACKAGE
(TOP VIEW)
S¹
1B1 ²
1B2 ³
1A ⁴
2B1 ⁵
2B2 ⁶
2A ⁷
GND ⁸
16 V_CC
15 OE
14 4B1
13 4B2
12 4A
11 3B1
10 3B2
9 3A
1
1B1 2
1B2 3
1A 4
2B1 5
2B2 6
2A 7
8
16
15 OE
14 4B1
13 4B2
12 4A
11 3B1
10 3B2
9
description/ordering information
The SN74CBTLV3257 is a 4-bit 1-of-2 high-speed FET multiplexer/demultiplexer. The low on-state resistance
of the switch allows connections to be made with minimal propagation delay.
The select (S) input controls the data flow. The FET multiplexers/demultiplexers are disabled when the
output-enable (OE) input is high.
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 SN74CBTLV3257RGYR CL257
−40°C to 85°C
SOIC − D
SSOP (QSOP) − DBQ
Tube
Tape and reel
Tape and reel
SN74CBTLV3257D
SN74CBTLV3257DR
SN74CBTLV3257DBQR
CBTLV3257
CL257
TSSOP − PW
Tape and reel SN74CBTLV3257PWR CL257
TVSOP − DGV
Tape and reel SN74CBTLV3257DGVR CL257
† _{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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