HD74LVC16245ATEL Ver la hoja de datos (PDF) - Renesas Electronics

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HD74LVC16245ATEL

16-bit Bus Transceivers with 3-state Outputs

Renesas Electronics 

HD74LVC16245A

Test Circuit

VCC

VCC

G

Input

Pulse generator

Zout = 50Ω

DIR

A1 S1

B1

Output

CL =

50 pF

500 Ω S2

450Ω

50 Ω

Scope

OPEN

*1 See under table

GND

Symbol

tPLH / t PHL

tZH/ t HZ

tZL / t LZ

S2

Vcc=2.7V,

3.3±0.3V

Vcc=5.0±0.5V

OPEN OPEN

GND

GND

6V

2×Vcc

Notes:

1. CL includes probe and jig capacitance.

2. A2-B2 to A8-B8 are identical to above load circuit.

3. S1 : Input-Output change switch.

Waveforms – 1

Input

10 %

tr

90 %

Vref

tPLH

tf

90 %

Vref

10 %

tPHL

Output

Vref

Vref

Notes: 1. tr = 2.5 ns, tf = 2.5 ns

2. Input waveform : PRR = 10 MHz, duty cycle 50%

VIH

GND

VOH

VOL

Rev.4.00 Jul. 29, 2004 page 5 of 7

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