Datasheet 搜索 > 逻辑控制器 > TI（德州仪器） > CY74FCT138CTSOCTG4 数据手册 > CY74FCT138CTSOCTG4 数据手册 1/12 页
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CY74FCT138CTSOCTG4 数据手册 - TI（德州仪器）
制造商:
TI（德州仪器）
分类:
逻辑控制器
封装:
SOIC-16
描述:
编码器、解码器、复用器和解复用器 1-of-8 Decoder
Pictures:
3D模型
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CY74FCT138CTSOCTG4数据手册
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CY54FCT138T, CY74FCT138T
1-OF-8 DECODERS
SCCS013B – MAY 1994 – REVISED OCTOBER 2001
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
D
Function, Pinout, and Drive Compatible
With FCT and F Logic
D
Reduced V
OH
(Typically = 3.3 V) Versions of
Equivalent FCT Functions
D
Edge-Rate Control Circuitry for
Significantly Improved Noise
Characteristics
D
I
off
Supports Partial-Power-Down Mode
Operation
D
Matched Rise and Fall Times
D
Fully Compatible With TTL Input and
Output Logic Levels
D
Dual 1-of-8 Decoder With Enables
D
ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
– 1000-V Charged-Device Model (C101)
D
CY54FCT138T
– 32-mA Output Sink Current
– 12-mA Output Source Current
D
CY74FCT138T
– 64-mA Output Sink Current
– 32-mA Output Source Current
description
The ’FCT138T devices are 1-of-8 decoders. These devices accept three binary weighted inputs (A
0
, A
1
, A
2
)
and, when enabled, provide eight mutually exclusive active-low outputs (O
0
–O
7
). The ’FCT138T devices
feature three enable inputs: two active low (E
1
, E
2
) and one active high (E
3
).
All outputs are high unless E
1
and E
2
are low and E
3
is high. This multiple-enable function allows easy parallel
expansion of the device to a 1-of-32 (five lines to 32 lines) decoder with just four ’FCT138T devices and one
inverter.
These devices are fully specified for partial-power-down applications using I
off
. The I
off
circuitry disables the
outputs, preventing damaging current backflow through the device when it is powered down.
PIN DESCRIPTION
NAME
DESCRIPTION
A Address inputs
E
1
, E
2
Enable inputs (active low)
E
3
Enable input (active high)
O Outputs
Copyright 2001, Texas Instruments Incorporated
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.
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.
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
A
0
A
1
A
2
E
1
E
2
E
3
O
7
GND
V
CC
O
0
O
1
O
2
O
3
O
4
O
5
O
6
CY54FCT138T ...D PACKAGE
CY74FCT138T ...Q OR SO PACKAGE
(TOP VIEW)
3212019
910111213
4
5
6
7
8
18
17
16
15
14
O
1
O
2
NC
O
3
O
4
A
2
E
1
NC
E
2
E
3
A
NC
V
7
GND
NC
CY54FCT138T . . . L PACKAGE
(TOP VIEW)
CC
NC – No internal connection
1
A
0
O
0
O
6
O
5
O
On products compliant to MIL-PRF-38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
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