Texas Instruments SN74CBTLV3251D, SN74CBTLV3251DBQR, SN74CBTLV3251DR, SN74CBTLV3251PWR Datasheet
FUNCTION
SN74CBTLV3251
LOW-VOLTAGE 1-OF-8 FET MULTIPLEXER/DEMULTIPLEXER
SCDS054E – MARCH 1998 – REVISED NOVEMBER 1999
D
Functionally Equivalent to QS3251
D
5-Ω Switch Connection Between Two Ports
D
Isolation Under Power-Off Conditions
D
Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
D
Package Options Include Thin Very
Small-Outline (DGV), Small-Outline (D),
Shrink Small-Outline (DBQ), and Thin
Shrink Small-Outline (PW) Packages
D, DBQ, DGV, OR PW PACKAGE
B4
B3
B2
B1
NC
OE
GND
(TOP VIEW)
1
2
3
4
5
A
6
7
8
16
15
14
13
12
11
10
V
CC
B5
B6
B7
B8
S0
S1
9
S2
description
The SN74CBTLV3251 device is a 1-of-8
high-speed FET multiplexer/demultiplexer. The
low on-state resistance of the switch allows
connections to be made with minimal propagation
delay .
The select inputs (S0, S1, S2) control the data flow. The FET multiplexers/demultiplexers are disabled when
the output-enable (OE
) input is high.
T o ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
The SN74CBTLV3251 is characterized for operation from –40°C to 85°C.
NC – No internal connection
FUNCTION TABLE
INPUTS
OE S2 S1 S0
L L L L A port = B1 port
L L L H A port = B2 port
L L H L A port = B3 port
L L H H A port = B4 port
L H L L A port = B5 port
L H L H A port = B6 port
L H H L A port = B7 port
L H H H A port = B8 port
H X X X Disconnect
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.
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
Copyright 1999, Texas Instruments Incorporated
1
SN74CBTLV3251
LOW-VOLTAGE 1-OF-8 FET MULTIPLEXER/DEMULTIPLEXER
SCDS054E – MARCH 1998 – REVISED NOVEMBER 1999
logic diagram (positive logic)
S0
S1
5
A
11
10
SW
SW
SW
SW
SW
SW
SW
SW
15
14
13
12
4
B1
3
B2
2
B3
1
B4
B5
B6
B7
B8
9
S2
7
OE
simplified schematic, each FET switch
A
B
(OE)
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
Loading...