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參數(shù)資料
| 型號： | 74F269SPC |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 通用總線功能 |
| 英文描述： | 8-Bit Bidirectional Binary Counter |
| 中文描述： | F/FAST SERIES, SYN POSITIVE EDGE TRIGGERED 8-BIT BIDIRECTIONAL BINARY COUNTER, PDIP24 |
| 封裝： | 0.300 INCH, PLASTIC, MS-001, DIP-24 |
| 文件頁數(shù)： | 3/14頁 |
| 文件大?。?/td> | 118K |
| 代理商： | 74F269SPC |
Philips Semiconductors
Product specification
74F269
8–bit bidirectional binary counter
1996 Jan 05
3
LOGIC SYMBOL
U/D
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
1
24
11
P0
P1
P2
P3
P4
P5
P6
P7
2
3
4
5
6
8
9
10
23
22
21
20
18
17
16
15
14
TC
12
13
PE
CEP
CET
CP
V
=Pin 19
GND=Pin 7
SF00835
LOGIC SYMBOL (IEEE/IEC)
SF00836
&
G5
EN6
24
M1[LOAD]
M2[COUNT]
M3[UP]
23
22
21
20
18
17
16
15
M4[DOWN]
1
13
12
11
2, 3, 5, 6 +/C7
2, 4, 5, 6–
[1]
[2]
[4]
[8]
[16]
[32]
[64]
[128]
3, 5, 6 CT=256
4, 5, 8 CT=0
14
2
3
4
5
6
8
9
10
CTR DIV 256
1, 7D
APPLICATION
U/D
CP
Q
0
Q1 Q2 Q3 Q4 Q5 Q6 Q7
P0 P1 P2 P3 P4 P5 P6 P7
PE
TC
CEP
CET
SF00851
U/D
CP
Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7
P0 P1 P2 P3 P4 P5 P6 P7
PE
TC
CEP
CET
U/D
CP
Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7
P0 P1 P2 P3 P4 P5 P6 P7
PE
TC
CEP
CET
U/D
CP
Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7
P0 P1 P2 P3 P4 P5 P6 P7
PE
TC
CEP
CET
Most significant 8-bit counter
Least significant 8-bit counter
CP
U/D
PE
Figure 1. Synchronous Multistage Counting Scheme
MODE SELECT FUNCTION TABLE
INPUTS
OUTPUTS
Q
n
L
H
Count Up
Count Down
q
n
q
n
OPERATING MODE
CP
↑
↑
↑
↑
↑
↑
U/D
X
X
h
l
X
X
CEP
X
X
l
l
h
X
CET
X
X
l
l
l
h
PE
l
l
h
h
h
h
P
n
l
h
X
X
X
X
TC
(a)
(a)
(a)
(a)
(a)
H
Parallel load
Count Up
Count Down
Hold (do nothing)
H = High voltage level
h = High voltage level one setup prior to the Low-to-High clock transition
L = Low voltage level
l
= Low voltage level one setup time prior to the Low-to-High clock transition
q = Lower case letters indicate the state of the referenced output prior to the Low-to-High clock transition
X = Don’t care
↑
= Low-to-High clock transition
(a)= TC is Low when CET is Low and the counter is at Terminal Count. Terminal Count Up is with all Q
n
outputs High and Terminal Count
Down is with all Qn outputs Low.
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| 74F269SPC_Q | 功能描述:計數(shù)器 IC 8-Bit Bidir Bin Ctr RoHS:否 制造商:NXP Semiconductors 計數(shù)器類型:Binary Counters 邏輯系列:74LV 位數(shù):10 計數(shù)法: 計數(shù)順序: 工作電源電壓:1 V to 5.5 V 工作溫度范圍:- 40 C to + 125 C 封裝 / 箱體:SOT-109 封裝:Reel |
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| 74F27 WAF | 制造商:Fairchild Semiconductor Corporation 功能描述: |
| 74F273 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Octal D Flip-Flop |
| 74F273A | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Octal D flip-flop |
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