74LVC4245APW datasheet(8/16 Pages) PHILIPS

8 / 16 page

1999 Jun 15

Philips Semiconductors

Product speciﬁcation

Octal dual supply translating transceiver; 3-state

74LVC4245A

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

handbook, full pagewidth

MNA367

tPLZ

tPHZ

outputs

disabled

outputs

enabled

outputs

enabled

OUTPUT

LOW-to-OFF

OFF-to-LOW

OUTPUT

HIGH-to-OFF

OFF-to-HIGH

OE INPUT

VOL

VOH

VCC

GND

tPZL

tPZH

VM = 1.5 V at 2.7 V ≤ VCCB ≤ 3.6 V;

VM = 0.5VCCA at VCCA ≥ 4.5 V;

VX =VOL +0.3VatVCCB ≤ 3.6 V;

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

VY =VOH − 0.3VatVCCB ≤ 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.7 Load circuitry for switching times.

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.

TEST

tPLH/tPHL

open

tPLZ/tPZL

× VCC

tPHZ/tPZH

GND

VCC

for A and B port

<2.7 V

VCC

for B port

2.7 to 3.6 V

2.7 V

for A port

4.5 to 5.5 V

3.0 V

handbook, full pagewidth

open

GND

50 pF

× VCC

VCC

MNA368

D.U.T.

500

Ω

500

Ω

PULSE

GENERATOR

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