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74HC244D Datasheet(PDF) 13 Page - NXP Semiconductors

Part # 74HC244D
Description  Octal buffer/line driver; 3-state
PDF  22 Pages
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Manufacturer  PHILIPS [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

74HC244D Datasheet(HTML) 13 Page - NXP Semiconductors

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74HC_HCT244_3
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 — 22 December 2005
13 of 22
Philips Semiconductors
74HC244; 74HCT244
Octal buffer/line driver; 3-state
Measurement points are given in Table 11.
VOL and VOH are typical voltage output drop that occur with the output load.
Fig 7.
3-state enable and disable times
Table 11:
Measurement points
Type
Input
Output
VM
VM
74HC244
0.5VCC
0.5VCC
74HCT244
1.3 V
1.3 V
001aae014
tPLZ
tPHZ
outputs
disabled
outputs
enabled
VY
VX
outputs
enabled
nYn output
LOW-to-OFF
OFF-to-LOW
nYn output
HIGH-to-OFF
OFF-to-HIGH
nOE input
VI
VOL
VOH
VCC
VM
GND
GND
tPZL
tPZH
VM
VM



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