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74HCT147 Arkusz danych(PDF) 2 Page - NXP Semiconductors

Numer części 74HCT147
Szczegółowy opis  10-to-4 line priority encoder
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Producent  PHILIPS [NXP Semiconductors]
Strona internetowa  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

74HCT147 Arkusz danych(HTML) 2 Page - NXP Semiconductors

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2003 Oct 30
2
Philips Semiconductors
Product specification
Hex inverting Schmitt trigger
74HC14; 74HCT14
FEATURES
• Applications:
– Wave and pulse shapers
– Astable multivibrators
– Monostable multivibrators.
• Complies with JEDEC standard no. 7A
• ESD protection:
HBM EIA/JESD22-A114-A exceeds 2000 V
MM EIA/JESD22-A115-A exceeds 200 V.
• Specified from −40 to +85 °C and −40 to +125 °C.
DESCRIPTION
The 74HC14 and 74HCT14 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 74HC14 and 74HCT14 provide six inverting buffers
with Schmitt-trigger action. They are capable of
transforming slowly changing input signals into sharply
defined, jitter-free output signals.
QUICK REFERENCE DATA
GND = 0 V; Tamb =25 °C; tr = tf = 6 ns
Notes
1. CPD is used to determine the dynamic power dissipation (PD in µW):
PD =CPD × VCC2 × fi × N+ Σ(CL × VCC2 × fo) where:
fi = input frequency in MHz;
fo = output frequency in MHz;
CL = output load capacitance in pF;
VCC = supply voltage in Volts;
N = total load switching outputs;
Σ(CL × VCC2 × fo) = sum of the outputs.
2. For type 74HC14 the condition is VI = GND to VCC.
For type 74HCT14 the condition is VI = GND to VCC − 1.5 V.
SYMBOL
PARAMETER
CONDITIONS
TYPICAL
UNIT
HC
HCT
tPHL/tPLH
propagation delay nA to nY
CL = 15 pF; VCC = 5 V 1217ns
CI
input capacitance
3.5
3.5
pF
CPD
power dissipation capacitance per gate notes 1 and 2
7
8
pF


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