HCF4521BC1 [STMICROELECTRONICS]
4000/14000/40000 SERIES, ASYN NEGATIVE EDGE TRIGGERED 24-BIT UP BINARY COUNTER, PQCC20, PLASTIC, LCC-20;
| 型号： | HCF4521BC1 |
| 厂家： | 
ST |
| 描述： | 4000/14000/40000 SERIES, ASYN NEGATIVE EDGE TRIGGERED 24-BIT UP BINARY COUNTER, PQCC20, PLASTIC, LCC-20 输出元件 逻辑集成电路 触发器 |
| 文件： | 总6页 (文件大小：236K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
HCC4521B
HCF4521B
24 - STAGE FREQUENCY DIVIDER
PRODUCT PREVIEW
.
.
.
.
.
VERY LOW QUIESCENT CURRENT
HIGH NOISE IMMUNITY
VOLTAGE SUPPLY RANGE 3V TO 18V
ALL STAGES ARE RESETTABLE
RESET DISABLES THE RC OSCILLATOR FOR
LOW STANDBY POWER DRAIN
RC AND CRYSTAL OSCILLATOR OUTPUT
ARE CAPABLE OF DRIVING EXTERNAL
LOADS
EY
F
.
(Plastic Package)
(Ceramic Frit Seal Package)
M1
C1
(Micro Package)
(Plastic Chip Carrier)
ORDER CODES :
HCC4521 BF
HCF4521 BEY
HCF4521 BM1
HCF4521 BC1
PIN CONNECTION (top view)
DESCRIPTION
The HCC4521B and HCF4521B are monolithic in-
tegrated circuits, available in 16-lead dual-in-line
plastic or ceramic packages and plasticmicro pack-
ages.
The HCC4521B and HCF4521B have a chain of 24
flip-flopswith an input circuit thatallows three modes
of operation. The input circuit functions as a crystal
or an RC oscillator or as an input buffer for an ex-
ternal oscillator. Each flip-flop preforms a divide-by-
two function giving a total count of 224 = 16, 777,
216. The count advances on the negative going
edge of the clock. Access is available to the final
seven stages giving the device added flexibility.
September 1990
1/6
Plastic DIP16 (0.25) MECHANICAL DATA
mm
inch
TYP.
DIM.
MIN.
0.51
0.77
TYP.
MAX.
MIN.
0.020
0.030
MAX.
a1
B
b
1.65
0.065
0.5
0.020
0.010
b1
D
E
e
0.25
20
0.787
8.5
2.54
17.78
0.335
0.100
0.700
e3
F
7.1
5.1
0.280
0.201
I
L
3.3
0.130
Z
1.27
0.050
P001C
2/6
Ceramic DIP16/1 MECHANICAL DATA
mm
inch
TYP.
DIM.
MIN.
TYP.
MAX.
20
MIN.
MAX.
0.787
0.276
A
B
7
D
E
3.3
0.130
0.700
0.38
0.015
e3
F
17.78
2.29
0.4
2.79
0.55
1.52
0.31
1.27
10.3
8.05
5.08
0.090
0.016
0.046
0.009
0.020
0.110
0.022
0.060
0.012
0.050
0.406
0.317
0.200
G
H
L
1.17
0.22
0.51
M
N
P
7.8
0.307
Q
P053D
3/6
SO16 (Narrow) MECHANICAL DATA
mm
inch
TYP.
DIM.
MIN.
TYP.
MAX.
1.75
0.2
MIN.
MAX.
0.068
0.007
0.064
0.018
0.010
A
a1
a2
b
0.1
0.004
1.65
0.46
0.25
0.35
0.19
0.013
0.007
b1
C
0.5
0.019
c1
D
45° (typ.)
9.8
5.8
10
0.385
0.228
0.393
0.244
E
6.2
e
1.27
8.89
0.050
0.350
e3
F
3.8
4.6
0.5
4.0
5.3
0.149
0.181
0.019
0.157
0.208
0.050
0.024
G
L
1.27
0.62
M
S
8° (max.)
P013H
4/6
PLCC20 MECHANICAL DATA
mm
inch
TYP.
DIM.
MIN.
9.78
8.89
4.2
TYP.
MAX.
10.03
9.04
MIN.
0.385
0.350
0.165
MAX.
0.395
0.356
0.180
A
B
D
4.57
d1
d2
E
2.54
0.56
0.100
0.022
7.37
8.38
0.290
0.330
0.004
e
1.27
5.08
0.38
0.050
0.200
0.015
e3
F
G
0.101
M
M1
1.27
1.14
0.050
0.045
P027A
5/6
Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsability for the
consequences of use of such information nor for any infringement of patents or other rights of third parties which may results from its use. No
license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specificationsmentioned
in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied.
SGS-THOMSON Microelectronicsproductsare notauthorized foruse ascritical componentsin life support devices or systems without express
written approval of SGS-THOMSON Microelectonics.
1994 SGS-THOMSON Microelectronics - All Rights Reserved
SGS-THOMSON Microelectronics GROUP OF COMPANIES
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6/6
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4000/14000/40000 SERIES, ASYN NEGATIVE EDGE TRIGGERED 24-BIT UP BINARY COUNTER, PDSO16, SO-16
STMICROELECTR
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