74LVC2245A 데이터 시트보기 (PDF) - Philips Electronics

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74LVC2245A

Octal transceiver with direction pin, 30 Ω series termination resistors; 5 V tolerant input/output; 3-state

Philips Electronics 

Philips Semiconductors

Octal transceiver with direction pin, 30 Ω series

termination resistors; 5 V tolerant input/output; 3-state

Product specification

74LVC2245A

handbook, full pagewidth

VCC

PULSE

VI

GENERATOR

VO

D.U.T.

RT

VEXT

RL

CL

RL

MNA616

VCC

VI

CL

RL

1.2 V

2.7 V

3.0 to 3.6 V

VCC

2.7 V

2.7 V

50 pF

50 pF

50 pF

500 Ω(1)

500 Ω

500 Ω

Note

1. The circuit performs better when RL = 1000 Ω

VEXT

tPLH/tPHL tPZH/tPHZ tPZL/tPLZ

open

GND

2 × VCC

open

GND

2 × VCC

open

GND

2 × VCC

Definitions for test circuit:

RL = Load resistor.

CL = Load capacitance including jig and probe capacitance.

RT = Termination resistance should be equal to the output impedance Zo of the pulse generator.

Fig.7 Load circuitry for switching times.

2003 Nov 17

11

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