74AHC541 データシートの表示（PDF） - Philips Electronics

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74AHC541

Octal buffer/line driver; 3-state

Philips Electronics 

Philips Semiconductors

Octal buffer/line driver; 3-state

Product specification

74AHC541; 74AHCT541

FEATURES

• ESD protection:

HBM EIA/JESD22-A114-A exceeds 2000 V

MM EIA/JESD22-A115-A exceeds 200 V

CDM EIA/JESD22-C101 exceeds 1000 V

• Balanced propagation delays

• All inputs have a Schmitt-trigger action

• Inputs accepts voltages higher than VCC

• For AHC only: operates with CMOS input levels

• For AHCT only: operates with TTL input levels

• Specified from −40 to +85 °C and −40 to +125 °C.

DESCRIPTION

The 74AHC/AHCT541 is a high-speed Si-gate CMOS

device.

The 74AHC/AHCT541 are octal non-inverting buffer/line

drivers with 3-state bus compatible outputs.

The 3-state outputs are controlled by the output enable

inputs OE0 and OE1.

A HIGH on OEn causes the outputs to assume a

high-impedance OFF-state.

QUICK REFERENCE DATA

Ground = 0 V; Tamb = 25 °C; tr = tf ≤ 3.0 ns.

SYMBOL

PARAMETER

CONDITIONS

tPHL/tPLH

CI

CO

CPD

propagation delay An to Yn

input capacitance

output capacitance

power dissipation capacitance

CL = 15 pF; VCC = 5 V

VI = VCC or GND

CL = 50 pF; f = 1 MHz;

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 Volts.

2. The condition is VI = GND to VCC.

TYPICAL

AHC

3.5

3

4.0

10

AHCT

3.5

3

4.0

12

UNIT

ns

pF

pF

pF

1999 Nov 24

2

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