74LVC4245AD データシートの表示（PDF） - Philips Electronics

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74LVC4245AD

Octal dual supply translating transceiver; 3-state

Philips Electronics 

Philips Semiconductors

Octal dual supply translating transceiver; 3-state

Product specification

74LVC4245A

handbook, full pagewidth

VI

OE INPUT

GND

VCC

OUTPUT

LOW-to-OFF

OFF-to-LOW

VOL

VOH

OUTPUT

HIGH-to-OFF

OFF-to-HIGH

GND

VM

tPLZ

tPZL

tPHZ

VX

VY

VM

tPZH

VM

outputs

enabled

outputs

disabled

outputs

enabled

MNA367

VM = 1.5 V at 2.7 V ≤ VCCB ≤ 3.6 V;

VM = 0.5VCCA at VCCA ≥ 4.5 V;

VX = VOL + 0.3 V at VCCB ≤ 3.6 V;

VX = VOL + 0.1 (VCCA − VOL) at VCCA ≥ 4.5 V

VY = VOH − 0.3 V at VCCB ≤ 3.6 V;

VY = VOH − 0.1 (VOH − GND) at VCCA ≥ 4.5 V;

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

Fig.6 The 3-state enable and disable times.

handbook, full pagewidth

VI

PULSE

GENERATOR

VCC

VO

D.U.T.

RT

S1

RL

500 Ω

2 × VCC

open

GND

CL

50 pF

RL

500 Ω

MNA368

TEST

tPLH/tPHL

tPLZ/tPZL

tPHZ/tPZH

S1

open

2 × VCC

GND

1999 Jun 15

VCC

for A and B port

<2.7 V

for B port

2.7 to 3.6 V

for A port

4.5 to 5.5 V

VI

VCC

2.7 V

3.0 V

Definitions for test circuit:

RL = Load resistor; see chapter “AC characteristics”.

CL = Load capacitance including jig and probe capacitance

(see chapter “AC characteristics”).

RT = Termination resistance should be equal to the output

impedance Z0 of the pulse generator.

Fig.7 Load circuitry for switching times.

8

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