參數(shù)資料
型號(hào): 74HCT242
廠商: NXP Semiconductors N.V.
元件分類: 通用總線功能
英文描述: 4-Bit Synchronous Binary Counters 16-SOIC -40 to 85
中文描述: 采用16-SOIC封裝的4位同步二進(jìn)制計(jì)數(shù)器 工作溫度-40℃到85℃
文件頁(yè)數(shù): 7/7頁(yè)
文件大小: 49K
代理商: 74HCT242
December 1990
7
Philips Semiconductors
Product specification
Quad bus transceiver; 3-state; inverting
74HC/HCT242
AC WAVEFORMS
PACKAGE OUTLINES
See
“74HC/HCT/HCU/HCMOS Logic Package Outlines”
.
Fig.5 Waveforms showing the input (A
n
, B
n
) to output (B
n
, A
n
) propagation delays and the output transition times.
(1) HC : V
M
= 50%; V
I
= GND to V
CC
.
HCT : V
M
= 1.3 V; V
I
= GND to 3 V.
Fig.6 Waveforms showing the 3-state enable and disable times for input OE
B
.
(1) HC : V
M
= 50%; V
I
= GND to V
CC
.
HCT : V
M
= 1.3 V; V
I
= GND to 3 V.
Fig.7 Waveforms showing the 3-state enable and disable times for input OE
A
.
(1) HC : V
M
= 50%; V
I
= GND to V
CC
.
HCT : V
M
= 1.3 V; V
I
= GND to 3 V.
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