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Toshiba Electronic Components Datasheet

TC74LCX138FK Datasheet

Low-Voltage 3-to-8 Line Decoder

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TC74LCX138F/FK
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74LCX138F, TC74LCX138FK
Low-Voltage 3-to-8 Line Decoder with 5-V Tolerant Inputs and Outputs
The TC74LCX138 is a high-performance CMOS 3-to-8 decoder.
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.
When the device is enabled, 3 binary select inputs (A, B and C)
determine which one of the outputs ( Y0 - Y7 ) will go low.
When enable input G1 is held low or either G2A or G2B is held
high, decoding function is inhibited and all outputs go high.
G1, G2A , and G2B inputs are provided to ease cascade connection
and for use as an address decoder for memory systems.
All inputs are equipped with protection circuits against static
discharge.
Features
Low-voltage operation: VCC = 1.65 to 3.6 V
High-speed operation: tpd = 6.0 ns (max) (VCC = 3.0 to 3.6 V)
Ouput 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.) 138 type
TC74LCX138F
TC74LCX138FK
Weight
SOP16-P-300-1.27A
VSSOP16-P-0030-0.50
: 0.18 g ( typ.)
: 0.02 g ( typ.)
Note: The Electrical Characteristics of VCC = 1.8 ± 0.15 V is only applicable for products which manufactured
from January 2009 onward.
© 2018
1
Toshiba Electronic Devices & Storage Corporation
Start of commercial production
1994-10
2018-08-02


Toshiba Electronic Components Datasheet

TC74LCX138FK Datasheet

Low-Voltage 3-to-8 Line Decoder

No Preview Available !

Pin Assignment (top view)
TC74LCX138F/FK
A1
B2
C3
4
5
G1 6
7
GND 8
16 VCC
15
14
13
12
11
10
9
IEC Logic Symbol
(1)
A
(2)
B
(3)
C
(6)
G1
(4)
(5)
Bin/Oct 0 (15)
1
1 (14)
2
2 (13)
4
3 (12)
4 (11)
&
5 (10)
EN
6
(9)
7
(7)
(1)
A
(2)
B
(3)
C
(6)
G1
(4)
(5)
0 Dmux 0 (15)
0
G
1 (14)
2
7
2 (13)
3 (12)
&
4 (11)
5 (10)
6
(9)
7
(7)
Truth Table
Inputs
Enable
Select
G1 G2A G2B C B A
LXXXXX
XHXXXX
XXHXXX
H
L
L
L
L
L
H
L
L
L
L
H
H
L
L
L
H
L
H
L
L
L
HH
H
L
L
H
L
L
H
L
L
H
L
H
H
L
L
H
H
L
H
L
L
H
HH
X: Don’t care
Outputs
Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7
HHHHHHHH
HHHHHHHH
HHHHHHHH
L HHHHHHH
H L HHHHHH
HH L HHHHH
HHHL HHHH
HHHH L HHH
HHHHH L HH
HHHHHHL H
HHHHHHH L
Selected Output
None
None
None
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
© 2018
2
Toshiba Electronic Devices & Storage Corporation
2018-08-02


Part Number TC74LCX138FK
Description Low-Voltage 3-to-8 Line Decoder
Maker Toshiba Semiconductor
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TC74LCX138FK Datasheet PDF






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