74HC_HCT259

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Product data sheet

Rev. 5 — 7 August 2012

12 of 22

NXP Semiconductors

74HC259; 74HCT259

8-bit addressable latch

Measurement points are given in Table 9.

The shaded areas indicate when the input is permitted to change for predictable output performance.

Fig 10. Data input to latch enable input set-up and hold times

001aah125

GND

GND

Qn output

Q = D

Q = D

LE input

D input

Measurement points are given in Table 9.

The shaded areas indicate when the input is permitted to change for predictable output performance.

Fig 11. Address input to latch enable input set-up and hold times

001aah126

ADDRESS STABLE

GND

GND

LE input

An input

Table 9.

Measurement points

Type

Input

Output

74HC259

74HCT259

1.3 V

1.3 V