參數(shù)資料
型號: 74HCT190D-T
元件分類: 通用總線功能
英文描述: Asynchronous Up/Down Counter
中文描述: 異步加/減計(jì)數(shù)器
文件頁數(shù): 8/16頁
文件大小: 78K
代理商: 74HCT190D-T
2002 May 15
8
Philips Semiconductors
Product specification
Bus buffer/line driver; 3-state
74HC1G126; 74HCT1G126
AC WAVEFORMS
handbook, halfpage
MNA121
A input
Y output
tPHL
tPLH
GND
VI
VM
VM
Fig.5 The input (A) to output (Y) propagation delays.
For HC1G: V
M
= 50%; V
I
= GND to V
CC
For HCT1G: V
M
= 1.3 V; V
I
= GND to 3.0 V.
handbook, full pagewidth
MNA129
tPLZ
tPHZ
output
disabled
output
enabled
VOH
0.3 V
VOL
+
0.3 V
output
enabled
output
LOW-to-OFF
OFF-to-LOW
output
HIGH-to-OFF
OFF-to-HIGH
OE input
VI
VCC
VM
GND
GND
tPZL
tPZH
VM
VM
Fig.6 The 3-state enable and disable times.
For HC1G: V
M
= 50%; V
I
= GND to V
CC
For HCT1G: V
M
= 1.3 V; V
I
= GND to 3.0 V.
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