74AHC259_08 Datasheet, PDF (11/17 Pages) NXP Semiconductors – 8-bit addressable latch

NXP Semiconductors
74AHC259; 74AHCT259
8-bit addressable latch
V_CC
LE input
GND
V_CC
D input
GND
V_M
t_su
t_h
V_M
t_su
t_h
V_OH
Qn output
Q=D
V_M
V_OL
Q=D
001aah125
Fig 9.
Measurement points are given in Table 9.
The shaded areas indicate when the input is permitted to change for predictable output performance.
V_OL and V_OH are typical voltage output levels that occur with the output load.
Data input to latch enable input set-up and hold times
V_CC
An input
GND
V_CC
LE input
GND
V_M ADDRESS STABLE
t_su
t_h
V_M
001aah126
Measurement points are given in Table 9.
The shaded areas indicate when the input is permitted to change for predictable output performance.
V_OL and V_OH are typical voltage output levels that occur with the output load.
Fig 10. Address input to latch enable input set-up and hold times
Table 9. Measurement points
Type
74AHC259
74AHCT259
Input
V_M
0.5 × V_CC
1.5 V
Output
V_M
0.5 × V_CC
0.5 × V_CC
74AHC_AHCT259_2
Product data sheet
Rev. 02 — 15 May 2008
© NXP B.V. 2008. All rights reserved.
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