74HCT154 PDF даташит
Спецификация 74HCT154 изготовлена «Philips» и имеет функцию, называемую «4-to-16 line decoder/demultiplexer». |
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Детали детали
Номер произв | 74HCT154 |
Описание | 4-to-16 line decoder/demultiplexer |
Производители | Philips |
логотип |
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INTEGRATED CIRCUITS
DATA SHEET
For a complete data sheet, please also download:
• The IC06 74HC/HCT/HCU/HCMOS Logic Family Specifications
• The IC06 74HC/HCT/HCU/HCMOS Logic Package Information
• The IC06 74HC/HCT/HCU/HCMOS Logic Package Outlines
74HC/HCT154
4-to-16 line decoder/demultiplexer
Product specification
File under Integrated Circuits, IC06
September 1993
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Philips Semiconductors
4-to-16 line decoder/demultiplexer
Product specification
74HC/HCT154
FEATURES
• 16-line demultiplexing capability
• Decodes 4 binary-coded inputs into one of 16 mutually
exclusive outputs
• 2-input enable gate for strobing or expansion
• Output capability: standard
• ICC category: MSI
GENERAL DESCRIPTION
The 74HC/HCT154 are high-speed Si-gate CMOS devices
and are pin compatible with low power Schottky TTL
(LSTTL). They are specified in compliance with JEDEC
standard no. 7A.
The 74HC/HCT154 decoders accept four active HIGH
binary address inputs and provide 16 mutually exclusive
active LOW outputs.
The 2-input enable gate can be used to strobe the decoder
to eliminate the normal decoding “glitches” on the outputs,
or it can be used for the expansion of the decoder.
The enable gate has two AND’ed inputs which must be
LOW to enable the outputs.
The “154” can be used as a 1-to-16 demultiplexer by using
one of the enable inputs as the multiplexed data input.
When the other enable is LOW, the addressed output will
follow the state of the applied data.
QUICK REFERENCE DATA
GND = 0 V; Tamb = 25 °C; tr = tf = 6 ns
SYMBOL PARAMETER
CONDITIONS
tPHL/ tPLH
CI
CPD
propagation delay An, En to Yn
input capacitance
power dissipation capacitance per package
CL = 15 pF; VCC = 5 V
notes 1 and 2
Notes
1. CPD is used to determine the dynamic power dissipation (PD in µW):
PD = CPD × VCC2 × fi + ∑ (CL × VCC2 × fo) where:
fi = input frequency in MHz
fo = output frequency in MHz
∑ (CL × VCC2 × fo) = sum of outputs
CL = output load capacitance in pF
VCC = supply voltage in V
2. For HC the condition is VI = GND to VCC
For HCT the condition is VI = GND to VCC − 1.5 V
TYPICAL
HC HCT
11 13
3.5 3.5
60 60
UNIT
ns
pF
pF
ORDERING INFORMATION
See “74HC/HCT/HCU/HCMOS Logic Package Information”.
September 1993
2
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Philips Semiconductors
4-to-16 line decoder/demultiplexer
PIN DESCRIPTION
PIN NO.
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17
18, 19
12
23, 22, 21, 20
24
SYMBOL
Y0 to Y15
E0, E1
GND
A0 to A3
VCC
Product specification
74HC/HCT154
NAME AND FUNCTION
outputs (active LOW)
enable inputs (active LOW)
ground (0 V)
address inputs
positive supply voltage
Fig.1 Pin configuration.
Fig.2 Logic symbol.
(a) (b)
Fig.3 IEC logic symbol.
September 1993
Fig.4 Functional diagram.
3
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