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Part: 74HC/HCT14
Category:
Logic
-> Schmitt Triggers
-> CMOS/BiCMOS->HC/HCT Family
Description: Hex Inverting Schmitt Trigger
Company: Philips Semiconductors
Datasheet: Download 74HC/HCT14 datasheet File size : 156 kB
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Datasheet text preview:
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/HCT14 Hex inverting Schmitt trigger
Product specification File under Integrated Circuits, IC06 September 1993
Philips Semiconductors
Product specification
Hex inverting Schmitt trigger
FEATURES · Output capability: standard · ICC category: SSI GENERAL DESCRIPTION
74HC/HCT14
The 74HC/HCT14 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/HCT14 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 TYPICAL SYMBOL tPHL/ tPLH CI CPD 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 = output load capacitance in pF VCC = supply voltage in V (CL × VCC2 × fo) = sum of outputs 2. For HC the condition is VI = GND to VCC For HCT the condition is VI = GND to VCC - 1.5 V ORDERING INFORMATION See "74HC/HCT/HCU/HCMOS Logic Package Information". PARAMETER propagation delay nA to nY input capacitance power dissipation capacitance per gate notes 1 and 2 CONDITIONS HC CL = 15 pF; VCC = 5 V 12 3.5 7 17 3.5 8 HCT ns pF pF UNIT
September 1993
2
Philips Semiconductors
Product specification
Hex inverting Schmitt trigger
PIN DESCRIPTION PIN NO. 1, 3, 5, 9, 11, 13 2, 4, 6, 8, 10, 12 7 14 SYMBOL 1A to 6A 1Y to 6Y GND VCC NAME AND FUNCTION data inputs data outputs ground (0 V) positive supply voltage
74HC/HCT14
Fig.1 Pin configuration.
Fig.2 Logic symbol.
Fig.3 IEC logic symbol.
FUNCTION TABLE INPUT nA L H Notes 1. H = HIGH voltage level L = LOW voltage level APPLICATIONS · Wave and pulse shapers · Astable multivibrators · Monostable multivibrators Fig.4 Functional diagram. Fig.5 Logic diagram (one Schmitt trigger). OUTPUT nY H L
September 1993
3
Philips Semiconductors
Product specification
Hex inverting Schmitt trigger
DC CHARACTERISTICS FOR 74HC
74HC/HCT14
For the DC characteristics see "74HC/HCT/HCU/HCMOS Logic Family Specifications". Transfer characteristics are given below. Output capability: standard ICC category: SSI Transfer characteristics for 74HC Voltages are referenced to GND (ground = 0 V) Tamb (°C) 74HC SYMBOL PARAMETER +25 min. VT+ positive-going threshold negative-going threshold hysteresis (VT+ - VT-) 0.7 1.7 2.1 0.3 0.9 1.2 0.2 0.4 0.6 typ. 1.18 2.38 3.14 0.52 1.40 1.89 0.66 0.98 1.25 max. 1.5 3.15 4.2 0.90 2.00 2.60 1.0 1.4 1.6 -40 to +85 min. 0.7 1.7 2.1 0.3 0.90 1.20 0.2 0.4 0.6 max. 1.5 3.15 4.2 0.90 2.00 2.60 1.0 1.4 1.6 -40 to +125 min. 0.7 1.7 2.1 0.30 0.90 1.2 0.2 0.4 0.6 max. 1.5 3.15 4.2 0.90 2.00 2.60 1.0 1.4 1.6 V 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 Figs 6 and 7 UNIT VCC WAVEFORMS (V) TEST CONDITIONS
VT -
V
Figs 6 and 7
VH
V
Figs 6 and 7
AC CHARACTERISTICS FOR 74HC GND = 0 V; tf = tf = 6 ns; CL = 50 pF Tamb (°C) 74HC SYMBOL PARAMETER +25 min. tPHL/ tPLH propagation delay nA to nY output transition time typ. 41 15 12 19 7 6 max. 125 25 21 75 15 13 -40 to +85 min. max. 155 31 26 95 19 15 -40 to +125 min. max. 190 38 32 110 22 19 ns 2.0 4.5 6.0 2.0 4.5 6.0 Fig.8 UNIT VCC WAVEFORMS (V) TEST CONDITIONS
tTHL/ tTLH
ns
Fig.8
September 1993
4
Philips Semiconductors
Product specification
Hex inverting Schmitt trigger
DC CHARACTERISTICS FOR 74HCT
74HC/HCT14
For the DC characteristics see "74HC/HCT/HCU/HCMOS Logic Family Specifications". Transfer characteristics are given below. Output capability: standard ICC category: SSI Note to HCT types The value of additional quiescent supply current (ICC) for a unit load of 1 is given in the family specifications. To determine ICC per input, multiply this value by the unit load coefficient shown in the table below. INPUT nA UNIT LOAD COEFFICIENT 0.3
Transfer characteristics for 74HCT Voltages are referenced to GND (ground = 0 V) Tamb (°C) 74HCT SYMBOL PARAMETER +25 min. VT+ VT - VH positive-going threshold negative-going threshold hysteresis (VT+ -VT-) 1.2 1.4 0.5 0.6 0.4 0.4 typ. 1.41 1.59 0.85 0.99 0.56 0.60 max. 1.9 2.1 1.2 1.4 - - -40 to +85 min. 1.2 1.4 0.5 0.6 0.4 0.4 max. 1.9 2.1 1.2 1.4 - - -40 to +125 min. 1.2 1.4 0.5 0.6 0.4 0.4 max. 1.9 2.1 1.2 1.4 - - V V V 4.5 5.5 4.5 5.5 4.5 5.5 Figs 6 and 7 Figs 6 and 7 Figs 6 and 7 UNIT VCC WAVEFORMS (V) TEST CONDITIONS
AC CHARACTERISTICS FOR 74HCT GND = 0 V; tr = tf = 6 ns; CL = 50 pF Tamb (°C) 74HCT SYMBOL PARAMETER +25 min. tPHL/ tPLH tTHL/ tTLH propagation delay nA, to nY output transition time typ. 20 7 max. 34 15 -40 to +85 min. max. 43 19 -40 to +125 min. max. 51 22 ns ns 4.5 4.5 Fig.8 Fig.8 UNIT VCC (V) WAVEFORMS TEST CONDITIONS
September 1993
5
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