HD74HC77FP-EL [HITACHI]
D Latch, HC/UH Series, 2-Func, High Level Triggered, 2-Bit, True Output, CMOS, PDSO14, FP-14DA;
| 型号： | HD74HC77FP-EL |
| 厂家： | 
HITACHI SEMICONDUCTOR |
| 描述： | D Latch, HC/UH Series, 2-Func, High Level Triggered, 2-Bit, True Output, CMOS, PDSO14, FP-14DA 锁存器 |
| 文件： | 总9页 (文件大小：50K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
HD74HC77
4-bit Bistable Latch
Description
The HD74HC77 is ideally suited for use as temporary storage for binary information between processing
units and input/output or indicator units. Information present at a data (D) input is transferred to the Q
output when the enable (G) is high and the Q output will follow the data input as long as the enable remains
high. When the enable goes low the information (that was present at the data input at the time the transition
occurred) is retained at the Q output until the enable is permitted to go high.
Features
•
•
•
•
•
High Speed Operation: tpd (D to Q) = 12 ns typ (CL = 50 pF)
High Output Current: Fanout of 10 LSTTL Loads
Wide Operating Voltage: VCC = 2 to 6 V
Low Input Current: 1 µA max
Low Quiescent Supply Current: ICC (static) = 2 µA max (Ta = 25°C)
Function Table
Inputs
Output
D
L
G
H
H
L
Q
L
H
X
H
No change
HD74HC77
Pin Arrangement
1D 1
2D 2
14 1Q
Q
G
13 2Q
D
D
Enable3-4 3
12 Enable1-2
11 GND
10 NC
G
Q
Q
VCC
4
3D 5
4D 6
NC 7
D
D
G
9
8
3Q
4Q
G
Q
(Top view)
Block Diagram (1//4)
Data
Q
Enable
2
HD74HC77
DC Characteristics
Ta = –40 to
Ta = 25°C
+85°C
Item
Symbol VCC (V) Min Typ Max Min Max Unit Test Conditions
Input voltage
VIH
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
4.5
6.0
2.0
4.5
6.0
4.5
6.0
6.0
6.0
1.5
—
—
—
—
0.5
1.5
3.15
4.2
—
—
V
V
V
3.15 —
—
4.2
—
—
—
—
—
—
—
—
VIL
0.5
1.35
1.8
—
1.35 —
1.8
—
—
—
—
—
—
Output voltage
VOH
1.9 2.0
4.4 4.5
5.9 6.0
4.18 —
5.68 —
1.9
4.4
5.9
4.13
5.63
—
Vin = VIH or VIL IOH = –20 µA
—
—
—
IOH = –4 mA
IOH = –5.2 mA
—
VOL
—
—
—
—
—
—
—
0.0 0.1
0.0 0.1
0.0 0.1
0.1
0.1
0.1
0.33
0.33
V
Vin = VIH or VIL IOL = 20 µA
—
—
—
—
—
—
0.26 —
0.26 —
±0.1 —
2.0
IOL = 4 mA
IOL = 5.2 mA
Input current
Iin
±1.0 µA
20 µA
Vin = VCC or GND
Quiescent supply ICC
current
—
Vin = VCC or GND, Iout = 0 µA
3
HD74HC77
AC Characteristics (CL = 50 pF, Input tr = tf = 6 ns)
Ta = –40 to
+85°C
Ta = 25°C
Symbol VCC (V) Min Typ Max Min Max Unit Test Conditions
Item
Propagation delay tPLH
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
—
—
—
—
—
—
—
5
—
105 —
130 ns
D to Q
time
tPHL
12 21
—
—
26
22
125
25
21
—
—
18
100 —
G to Q
13 20
—
—
5
—
—
1
17
—
—
—
75
15
13
10
Hold time
th
—
—
—
95
19
16
10
ns
ns
pF
5
5
5
—
—
5
5
Output rise/fall
time
tTLH
tTHL
—
—
—
—
—
—
—
—
—
5
Input capacitance Cin
4
Unit: mm
19.20
20.32 Max
14
1
8
7
1.30
2.39 Max
7.62
+ 0.10
– 0.05
0.25
2.54 ± 0.25
0.48 ± 0.10
0° – 15°
Hitachi Code
DP-14
JEDEC
EIAJ
Conforms
Conforms
Weight (reference value) 0.97 g
Unit: mm
10.06
10.5 Max
8
14
1
7
+ 0.20
7.80
– 0.30
1.42 Max
1.15
0° – 8°
1.27
0.70 ± 0.20
*0.42 ± 0.08
0.40 ± 0.06
0.15
M
0.12
Hitachi Code
JEDEC
FP-14DA
—
EIAJ
Conforms
*Dimension including the plating thickness
Base material dimension
Weight (reference value) 0.23 g
Unit: mm
8.65
9.05 Max
8
14
1
7
+ 0.10
6.10
– 0.30
0.635 Max
1.08
0° – 8°
+ 0.67
1.27
*0.40 ± 0.06
0.60
– 0.20
0.15
M
0.25
Hitachi Code
JEDEC
EIAJ
FP-14DN
Conforms
Conforms
*Pd plating
Weight (reference value) 0.13 g
Unit: mm
5.00
5.30 Max
14
8
1
7
0.65
1.0
+0.08
*0.22
–0.07
0.13 M
0.20 ± 0.06
6.40 ± 0.20
0.83 Max
0° – 8°
0.50 ± 0.10
0.10
Hitachi Code
JEDEC
EIAJ
TTP-14D
—
—
*Dimension including the plating thickness
Base material dimension
Weight (reference value) 0.05 g
Cautions
1. Hitachi neither warrants nor grants licenses of any rights of Hitachi’s or any third party’s patent,
copyright, trademark, or other intellectual property rights for information contained in this document.
Hitachi bears no responsibility for problems that may arise with third party’s rights, including
intellectual property rights, in connection with use of the information contained in this document.
2. Products and product specifications may be subject to change without notice. Confirm that you have
received the latest product standards or specifications before final design, purchase or use.
3. Hitachi makes every attempt to ensure that its products are of high quality and reliability. However,
contact Hitachi’s sales office before using the product in an application that demands especially high
quality and reliability or where its failure or malfunction may directly threaten human life or cause risk
of bodily injury, such as aerospace, aeronautics, nuclear power, combustion control, transportation,
traffic, safety equipment or medical equipment for life support.
4. Design your application so that the product is used within the ranges guaranteed by Hitachi particularly
for maximum rating, operating supply voltage range, heat radiation characteristics, installation
conditions and other characteristics. Hitachi bears no responsibility for failure or damage when used
beyond the guaranteed ranges. Even within the guaranteed ranges, consider normally foreseeable
failure rates or failure modes in semiconductor devices and employ systemic measures such as fail-
safes, so that the equipment incorporating Hitachi product does not cause bodily injury, fire or other
consequential damage due to operation of the Hitachi product.
5. This product is not designed to be radiation resistant.
6. No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without
written approval from Hitachi.
7. Contact Hitachi’s sales office for any questions regarding this document or Hitachi semiconductor
products.
Hitachi, Ltd.
Semiconductor & Integrated Circuits.
Nippon Bldg., 2-6-2, Ohte-machi, Chiyoda-ku, Tokyo 100-0004, Japan
Tel: Tokyo (03) 3270-2111 Fax: (03) 3270-5109
URL
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Japan
: http://www.hitachi.co.jp/Sicd/indx.htm
For further information write to:
Hitachi Semiconductor
(America) Inc.
Hitachi Europe GmbH
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Tel: <44> (1628) 585000
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Copyright ' Hitachi, Ltd., 1999. All rights reserved. Printed in Japan.
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