參數(shù)資料
型號: 74HC259
廠商: NXP Semiconductors N.V.
英文描述: 8-bit addressable latch
中文描述: 8位可尋址鎖存器
文件頁數(shù): 11/11頁
文件大?。?/td> 87K
代理商: 74HC259
December 1990
11
Philips Semiconductors
Product specification
8-bit addressable latch
74HC/HCT259
PACKAGE OUTLINES
See
“74HC/HCT/HCU/HCMOS Logic Package Outlines”
.
Fig.9 Waveforms showing the conditional reset input (MR) to output (Q
n
) propagation delays.
(1) HC : V
M
= 50%; V
I
= GND to V
.
HCT: V
M
= 1.3 V; V
I
= GND to 3 V.
Fig.10 Waveforms showing the data set-up and hold times for the D input to LE input.
The shaded areas indicate when the input is
permitted to change for predictable output
performance.
(1) HC : V
M
= 50%; V
I
= GND to V
.
HCT: V
M
= 1.3 V; V
I
= GND to 3 V.
Fig.11 Waveforms showing the address set-up and hold times for A
n
inputs to LE input.
The shaded areas indicate when the input is
permitted to change for predictable output
performance.
(1) HC : V
M
= 50%; V
I
= GND to V
.
HCT: V
M
= 1.3 V; V
I
= GND to 3 V.
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