74HC366 PHILIPS

Document overview

  • PDF pages: 7

Technical content

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FEATURES

  • Inverting outputs
  • Output capability: bus driver
  • ICC category: MSI

GENERAL DESCRIPTION

The 74HC/HCT366 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.

QUICK REFERENCE DATA

GND = 0 V; Tamb = 25 °C; tr = tf = 6 ns

The 74HC/HCT366 are hex inverting buffer/line drivers with 3-state outputs. The 3-state outputs (nY) are controlled by the output enable inputs (OE1, OE2). A HIGH on OEn causes the outputs to assume a high impedance OFF-state. The ”366” is identical to the “365” but has inverting outputs.

SYMBOL PARAMETER CONDITIONS TYPICAL UNIT
HC HCT
t / t PHL PLH propagation delay nA to nY C = 15 pF; V = 5 V L CC 10 11 ns
C I input capacitance 3.5 3.5 pF
C PD power dissipation capacitance per buffer notes 1 and 2 30 30 pF

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

ORDERING INFORMATION

See “74HC/HCT/HCU/HCMOS Logic Package Information”.

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PIN DESCRIPTION

PIN NO. SYMBOL NAME AND FUNCTION
1, 15 2, 4, 6, 10, 12, 14 3, 5, 7, 9, 11, 13 8 16 OE , OE 1 2 1A to 6A 1Y to 6Y GND V CC output enable inputs (active LOW) data inputs data outputs ground (0 V) positive supply voltage
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Fig.2 Logic symbol.

Fig.1 Pin configuration.

Fig.3 IEC logic symbol.

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FUNCTION TABLE

Column 1 Column 2 Column 3 Column 4
INPUTS OUTPUT
OE 1 OE 2 nA nY
L L X H L L H X L H X X H L Z Z
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Notes 1. H = HIGH voltage level L = LOW voltage level X = don’t care Z = high impedance OFF-state

Fig.4 Functional diagram.

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Fig.5 Logic diagram.

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DC CHARACTERISTICS FOR 74HC

For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”. Output capability: bus driver ICC category: MSI

AC CHARACTERISTICS FOR 74HC

GND = 0 V; tr = tf = 6 ns; CL = 50 pF

SYMBOL PARAMETER T (°C) amb UNIT TEST CONDITIONS
74HC V CC (V) WAVEFORMS
+25 −40 to +85 −40 to +125
min. typ. max. min. max. min. max.
t / t PHL PLH propagation delay nA to nY 33 12 10 100 20 17 125 25 21 150 30 26 ns 2.0 4.5 6.0 Fig.6
t / t PZH PZL 3-state output enable time OE to nY n 44 16 13 150 30 26 190 38 33 225 45 38 ns 2.0 4.5 6.0 Fig.7
t / t PHZ PLZ 3-state output disable time OE to nY n 55 20 16 150 30 26 190 38 33 225 45 38 ns 2.0 4.5 6.0 Fig.7
t / t THL TLH output transition time 14 5 4 60 12 10 75 15 13 90 18 15 ns 2.0 4.5 6.0 Fig.6

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DC CHARACTERISTICS FOR 74HCT

For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”. Output capability: bus driver ICC category: MSI

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 UNIT LOAD COEFFICIENT
OE 1 OE 2 nA 1.00 0.90 1.00

AC CHARACTERISTICS FOR 74HCT

GND = 0 V; tr = tf = 6 ns; CL = 50 pF

SYMBOL PARAMETER T (°C) amb UNIT TEST CONDITIONS
74HCT V CC (V) WAVEFORMS
+25 −40 to +85 −40 to +125
min. typ. max. min. max. min. max.
t PHL/ t PLH propagation delay nA to nY 13 24 30 36 ns 4.5 Fig.6
t PZH/ t PZL 3-state output enable time OE to nY n 16 35 44 53 ns 4.5 Fig.7
t PHZ/ t PLZ 3-state output disable time OE to nY n 20 35 44 53 ns 4.5 Fig.7
t / t THL TLH output transition time 5 12 15 18 ns 4.5 Fig.6

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