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TC74LCX257FK Datasheet

Low-Voltage Quad 2-Channel Multiplexer

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TC74LCX257F/FK
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74LCX257F, TC74LCX257FK
Low-Voltage Quad 2-Channel Multiplexer (3-state) with 5-V Tolerant Inputs and Outputs
The TC74LCX257 is a high-performance CMOS multiplexer. Designed
for use in 3.3-V systems, it achieves high-speed operation while
maintaining the CMOS low-power dissipation.
The device is designed for low-voltage (3.3 V) VCC applications, but it
could be used to interface to 5-V supply environment for inputs.
It is composed of four independent 2-channel multiplexers with
common select and OE .
If OE is set low, the outputs are held in a high-impedance state.
When SELECT is set low, “A” data inputs are enabled. Conversely, when
SELECT is high, “B” data inputs are enabled.
All inputs are equipped with protection circuits against static
discharge.
Features
Low-voltage operation: VCC = 2.0 to 3.6 V
High-speed operation: tpd = 6.0 ns (max) (VCC = 3.0 to 3.6 V)
Output current: |IOH|/IOL = 24 mA (min) (VCC = 3.0 V)
Latch-up performance: 500 mA
Available in JEITA SOP, VSSOP(US)
Power-down protection provided on all inputs and outputs
Pin and function compatible with the 74 series
(74AC/VHC/HC/F/ALS/LS etc.) 257 type
TC74LCX257F
TC74LCX257FK
Weight
SOP16-P-300-1.27A
VSSOP16-P-0030-0.50
: 0.18 g (typ.)
: 0.02 g (typ.)
© 2018
1
Toshiba Electronic Devices & Storage Corporation
Start of commercial production
1995-02
2018-08-02


Toshiba Electronic Components Datasheet

TC74LCX257FK Datasheet

Low-Voltage Quad 2-Channel Multiplexer

No Preview Available !

Pin Assignment (top view)
SELECT 1
1A 2
1B 3
1Y 4
2A 5
2B 6
2Y 7
GND 8
16 VCC
15
14 4A
13 4B
12 4Y
11 3A
10 3B
9 3Y
Truth Table
Inputs
OE
SELECT
A
B
H
X
X
X
L
L
L
X
L
L
H
X
L
H
X
L
L
H
X
H
X: Don’t care
Z: High impedance
System Diagram
1
SELECT
2
1A
3
1B
5
2A
6
2B
11
3A
10
3B
14
4A
13
4B
15
IEC Logic Symbol
TC74LCX257F/FK
(15)
(1)
SELECT
(2)
1A
(3)
1B
(5)
2A
(6)
2B
(11)
3A
(10)
3B
(14)
4A
(13)
4B
EN
G1
MUX
1
(4)
1Y
(7)
2Y
(9)
3Y
(12)
4Y
Outputs
Y
Z
L
H
L
H
4
1Y
7
2Y
9
3Y
12
4Y
© 2018
2
Toshiba Electronic Devices & Storage Corporation
2018-08-02


Part Number TC74LCX257FK
Description Low-Voltage Quad 2-Channel Multiplexer
Maker Toshiba Semiconductor
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TC74LCX257FK Datasheet PDF






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1 TC74LCX257F Low-Voltage Quad 2-Channel Multiplexer
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2 TC74LCX257FK Low-Voltage Quad 2-Channel Multiplexer
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