74LVC541APW データシートの表示（PDF） - Philips Electronics

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74LVC541APW

Octal buffer/line driver with 5-volt tolerant inputs/outputs (3-State)

Philips Electronics 

Philips Semiconductors

Octal buffer/line driver with 5-volt tolerant

inputs/outputs (3-State)

Product specification

74LVC541A

AC WAVEFORMS

VM = 1.5 V at VCC w 2.7 V

VM = 0.5 S VCC at VCC < 2.7 V

VX = VOL + 0.3 V at VCC ≥ 2.7 V

VX = VOL + 0.1 ⋅ VCC at VCC < 2.7 V

VY = VOH – 0.3 V at VCC ≥ 2.7 V

VY = VOH – 0.1 ⋅ VCC at VCC < 2.7 V

VOL and VOH are the typical output voltage drop that occur with the

output load.

VI

An INPUT

GND

tPHL

VOH

Yn OUTPUT

VOL

VM

VM

tPLH

SV00700

Figure 1. Input (An) to output (Yn) propagation delays.

VI

OEn INPUT

GND

VCC

OUTPUT

LOW-to-OFF

OFF-to-LOW

VOL

VOH

OUTPUT

HIGH-to-OFF

OFF–to-HIGH

GND

VM

tPLZ

VX

tPHZ

VY

outputs

enabled

tPZL

VM

tPZH

outputs

disabled

VM

outputs

enabled

SV00685

Figure 2. 3-state enable and disable times.

TEST CIRCUIT

VI

PULSE

GENERATOR

VCC

D.U.T.

RT

VO

CL 50pF

S1

500Ω

2 x VCC

Open

GND

500Ω

VCC

t 2.7V

2.7V – 3.6V

VI

VCC

2.7V

Test

tPLH/tPHL

tPLZ/tPZL

tPHZ/tPZH

S1

Open

2 x VCC

GND

SY00003

Figure 3. Load circuitry for switching times.

1998 Jul 29

6

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