NXP Semiconductors
74HC244-Q100; 74HCT244-Q100
Octal buffer/line driver; 3-state
VI
nOE input
GND
VCC
nYn output
LOW- to - OFF
OFF- to - LOW
VOL
VOH
nYn output
HIGH- to - OFF
OFF- to - HIGH
GND
VM
t PLZ
t PZL
t PHZ
VX
VY
outputs
enabled
VM
t PZH
VM
outputs
disabled
outputs
enabled
001aae014
Fig 7.
Measurement points are given in Table 8.
VOL and VOH are typical voltage output levels that occur with the output load.
3-state enable and disable times
Table 8. Measurement points
Type
Input
74HC244-Q100
74HCT244-Q100
VM
0.5 VCC
1.3 V
Output
VM
0.5 VCC
1.3 V
VX
0.1 VCC
0.1 VCC
VY
0.9 VCC
0.9 VCC
74HC_HCT244_Q100
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 1. — 7 August 2012
© NXP B.V. 2012. All rights reserved.
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