參數(shù)資料
型號(hào): 74HCT192D
廠商: NXP SEMICONDUCTORS
元件分類: 通用總線功能
英文描述: Presettable synchronous BCD decade up/down counter
中文描述: HCT SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT BIDIRECTIONAL DECADE COUNTER, PDSO16
文件頁(yè)數(shù): 11/13頁(yè)
文件大小: 99K
代理商: 74HCT192D
December 1990
11
Philips Semiconductors
Product specification
Presettable synchronous BCD decade
up/down counter
74HC/HCT192
AC WAVEFORMS
Fig.7
Waveforms showing the clock (CP
U
, CP
D
) to output (Q
n
) propagation delays, the clock pulse width and
the maximum clock pulse frequency.
(1) HC : V
M
= 50%; V
I
= GND to V
.
HCT: V
M
= 1.3 V; V
I
= GND to 3 V.
Fig.8
Waveforms showing the clock (CP
U
, CP
D
) to terminal count output (TC
U
, TC
D
) 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.9
Waveforms showing the parallel load input (PL) and data (D
n
) to Q
n
output propagation delays and PL
removal time to clock input (CP
U
, CP
D
).
(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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