參數(shù)資料
型號(hào): 74HC191
廠商: Texas Instruments, Inc.
元件分類: 通用總線功能
英文描述: SN54HC191, SN74HC191 4-BIT SYNCHRONOUS UP/DOWN BINARY COUNTERS
中文描述: SN54HC191,SN74HC191 4位同步向上/向下二進(jìn)制計(jì)數(shù)器
文件頁(yè)數(shù): 10/14頁(yè)
文件大?。?/td> 108K
代理商: 74HC191
December 1990
10
Philips Semiconductors
Product specification
Presettable synchronous 4-bit binary
up/down counter
74HC/HCT191
DC CHARACTERISTICS FOR 74HCT
For the DC characteristics see
“74HC/HCT/HCU/HCMOS Logic Family Specifications”
.
Output capability: standard
I
CC
category: MSI
Note to HCT types
The value of additional quiescent supply current (
I
CC
) for a unit load of 1 is given in the family specifications.
To determine
I
CC
per input, multiply this value by the unit load coefficient shown in the table below.
INPUT
UNIT LOAD COEFFICIENT
D
n
CP
U/D
CE, PL
0.5
0.65
1.15
1.5
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