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參數(shù)資料
| 型號： | 74HC190DB |
| 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： | HC/UH SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT BIDIRECTIONAL DECADE COUNTER, PDSO16 |
| 文件頁數(shù)： | 5/13頁 |
| 文件大小： | 101K |
| 代理商： | 74HC190DB |
December 1990
5
Philips Semiconductors
Product specification
Presettable synchronous BCD decade
up/down counter
74HC/HCT190
FUNCTION TABLE
TC AND RC FUNCTION TABLE
Notes
1.
H = HIGH voltage level
L
= LOW voltage level
I
= LOW voltage level one set-up time prior to the LOW-to-HIGH CP transition
X = don’t care
↑
= LOW-to-HIGH CP transition
= one LOW level pulse
= TC goes LOW on a LOW-to-HIGH CP transition
OPERATING MODE
INPUTS
OUTPUTS
PL
U/D
CE
CP
D
n
L
H
X
X
X
Q
n
L
H
count up
count down
no change
parallel load
L
L
H
H
H
X
X
L
H
X
X
X
I
I
H
X
X
↑
↑
X
count up
count down
hold (do nothing)
INPUTS
TERMINAL COUNT STATE
OUTPUTS
U/D
CE
CP
Q
0
H
H
H
Q
1
X
X
X
Q
2
X
X
X
Q
3
H
H
H
TC
RC
H
L
L
H
H
L
X
X
L
H
H
H
L
H
H
H
H
L
X
X
L
L
L
L
L
L
L
L
L
L
L
L
L
H
H
H
Fig.4 Functional diagram.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 74HC190N | Presettable synchronous BCD decade up/down counter |
| 74HC190PW | Presettable synchronous BCD decade up/down counter |
| 74HCT190D | Presettable synchronous BCD decade up/down counter |
| 74HCT190DB | Presettable synchronous BCD decade up/down counter |
| 74HCT190N | Presettable synchronous BCD decade up/down counter |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74HC190D-T | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Asynchronous Up/Down Counter |
| 74HC190N | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Presettable synchronous BCD decade up/down counter |
| 74HC190PW | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Presettable synchronous BCD decade up/down counter |
| 74HC191 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:SN54HC191, SN74HC191 4-BIT SYNCHRONOUS UP/DOWN BINARY COUNTERS |
| 74HC191D | 制造商:NXP Semiconductors 功能描述:SYNC BINARY UP/DOWN COUNTER 制造商:NXP Semiconductors 功能描述:HC Counter Bulk 制造商:NXP Semiconductors 功能描述:IC 74HC CMOS SMD 74HC191 SOIC16 制造商:NXP Semiconductors 功能描述:IC, 74HC CMOS, SMD, 74HC191, SOIC16 制造商:NXP Semiconductors 功能描述:IC, 74HC CMOS, SMD, 74HC191, SOIC16; Counter Type:Binary; Clock Frequency:39MHz; Count Maximum:15; Supply Voltage Min:2V; Supply Voltage Max:6V; Logic Case Style:SOIC; No. of Pins:16; Operating Temperature Min:-40C; Operating ;RoHS Compliant: Yes 制造商:NXP Semiconductors 功能描述:4-bit binary up/down counter,74HC191D |
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