74ABT646A 查看數據表（PDF） - NXP Semiconductors.

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74ABT646A

Octal bus transceiver/register; 3-state

NXP Semiconductors. 

NXP Semiconductors

74ABT646A

Octal bus transceiver/register; 3-state

VI

negative

pulse

0V

VI

positive

pulse

0V

90 %

10 %

VM

10 %

tf

tr

90 %

VM

tW

90 %

VM

10 %

tr

tf

90 %

VM

10 %

tW

001aai298

VI

G

VCC

VO

DUT

RT

a. Input pulse definition

b. Test circuit

Test data is given in Table 8.

RL = Load resistance.

CL = Load capacitance including jig and probe capacitance.

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

VEXT = Test voltage for switching times.

Fig 11. Load circuitry for switching times

VEXT

RL

CL

RL

mna616

Table 8.

Input

VI

3.0 V

Test data

fI

1 MHz

tW

500 ns

tr, tf

≤ 2.5 ns

Load

CL

50 pF

RL

500 Ω

VEXT

tPHL, tPLH

open

tPZH, tPHZ

open

tPZL, tPLZ

7.0 V

74ABT646A_3

Product data sheet

All information provided in this document is subject to legal disclaimers.

Rev. 03 — 15 March 2010

© NXP B.V. 2010. All rights reserved.

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