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74LVC646A Fiches technique(PDF) 10 Page - NXP Semiconductors

No de pièce 74LVC646A
Description  Octal bus transceiver/register 3-State
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Fabricant  PHILIPS [NXP Semiconductors]
Site Internet  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

74LVC646A Fiches technique(HTML) 10 Page - NXP Semiconductors

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Philips Semiconductors
Product specification
74LVC646A
Octal bus transceiver/register (3-State)
1998 Jul 29
10
AC WAVEFORMS (
Continued)
VM = 1.5V at VCC w 2.7V
VM = 0.5V * VCC at VCC t 2.7V
VOL and VOH are the typical output voltage drop that occur with the
output load.
VX = VOL + 0.3V at VCC w 2.7V
VX = VOL + 0.1VCC at VCC < 2.7V
VY = VOH – 0.3V at VCC w 2.7V
VY = VOH – 0.1VCC at VCC < 2.7V
SV00757
tPHZ
tPZH
tPZL
tPLZ
tPZH
tPZL
VX
VX
VOL
VOL
VOL
VY
VY
VOH
VI
VCC
GND
GND
VOH
VOH
VM
VM
VM
VM
VM
tPHZ
tPHZ
DIR INPUT
An OUTPUT
Bn OUTPUT
Bn OUTPUT
AnOUTPUT
Figure 5. Input DIR to output An, Bn 3-State enable and disable
times.
TEST CIRCUIT
PULSE
GENERATOR
VI
RT
D.U.T.
VO
CL
50pF
S1
2 x VCC
Open
GND
500
Ω
500
Ω
VCC
VI
t 2.7V
VCC
2.7V – 3.6V
2.7V
Test
S1
GND
tPLZ/tPZL
2 x VCC
tPHZ/tPZH
tPLH/tPHL
Open
SY00003
VCC
Figure 6. Load circuitry for switching times.


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