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74VHC74N 반도체 회로 부품 판매점

Dual D-Type Flip-Flop with Preset and Clear



Fairchild Semiconductor 로고
Fairchild Semiconductor
74VHC74N 데이터시트, 핀배열, 회로
October 1992
Revised March 1999
74VHC74
Dual D-Type Flip-Flop with Preset and Clear
General Description
The VHC74 is an advanced high speed CMOS Dual D-
Type Flip-Flop fabricated with silicon gate CMOS technol-
ogy. It achieves the high speed operation similar to equiva-
lent Bipolar Schottky TTL while maintaining the CMOS low
power dissipation. The signal level applied to the D input is
transferred to the Q output during the positive going transi-
tion of the CK pulse. CLR and PR are independent of the
CK and are accomplished by setting the appropriate input
LOW.
An input protection circuit ensures that 0V to 7V can be
applied to the input pins without regard to the supply volt-
age. This device can be used to interface 5V to 3V systems
and two supply systems such as battery backup. This cir-
cuit prevents device destruction due to mismatched supply
and input voltages.
Features
s High Speed: fMAX = 170 MHz (typ) at TA = 25°C
s High noise immunity: VNIH = VNIL = 28% VCC (min)
s Power down protection is provided on all inputs
s Low power dissipation: ICC = 2 µA (max) at TA = 25°C
s Pin and function compatible with 74HC74
Ordering Code:
Order Number Package Number
Package Description
74VHC74M
M14A
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150” Narrow
74VHC74SJ
M14D
14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74VHC74MTC
MTC14
14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
74VHC74N
N14A
14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide
Surface mount packages are also available on Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbol
Connection Diagram
IEEE/IEC
Pin Descriptions
Pin Names
D1, D2
CK1, CK2
CLR1, CLR2
PR1, PR2
Q1, Q1, Q2, Q2
Description
Data Inputs
Clock Pulse Inputs
Direct Clear Inputs
Direct Preset Inputs
Output
Truth Table
Inputs
CLR PR D CK
Outputs
QQ
Function
LHXX
L
H Clear
HLXX
H
L Preset
L L X X H (Note 1) H (Note 1)
H H L
LH
H H H
HL
H H X
Qn Qn No Change
Note 1: This configuration is nonstable; that is, it will not persist when pre-
set and clear inputs return to their inactive (HIGH) state.
© 1999 Fairchild Semiconductor Corporation DS011505.prf
www.fairchildsemi.com


74VHC74N 데이터시트, 핀배열, 회로
Absolute Maximum Ratings(Note 2)
Supply Voltage (VCC)
DC Input Voltage (VIN)
DC Output Voltage (VOUT)
Input Diode Current (IIK)
Output Diode Current (IOK)
DC Output Current (IOUT)
DC VCC/GND Current (ICC)
Storage Temperature (TSTG)
Lead Temperature (TL)
Soldering (10 seconds)
0.5V to +7.0V
0.5V to +7.0V
0.5V to VCC + 0.5V
20 mA
±20 mA
±25 mA
±50 mA
65°C to +150°C
260°C
Recommended Operating
Conditions (Note 3)
Supply Voltage (VCC)
2.0V to 5.5V
Input Voltage (VIN)
0V to +5.5V
Output Voltage (VOUT)
0V to VCC
Operating Temperature (TOPR)
40°C to +85°C
Input Rise and Fall Time (tr, tf)
VCC = 3.3V ± 0.3V
0 100 ns/V
VCC = 5.0V ± 0.5V
0 20 ns/V
Note 2: Absolute maximum ratings are values beyond which the device
may be damaged or have its useful life impaired. The databook specifica-
tions should be met, without exception, to ensure that the system design is
reliable over its power supply, temperature, and output/input loading varai-
bles. Fairchild does not recommend operation outside databook specifica-
tions.
Note 3: Unused inputs must be held HIGH or LOW. They may not float.
DC Electrical Characteristics
Symbol
VIH
VIL
VOH
VOL
IIN
ICC
Parameter
VCC
(V)
HIGH Level Input
2.0
Voltage
3.0 5.5
LOW Level Input
2.0
Voltage
3.0 5.5
HIGH Level Output
2.0
Voltage
3.0
4.5
3.0
4.5
LOW Level Output
2.0
Voltage
3.0
4.5
3.0
4.5
Input Leakage Current
0 5.5
Quiescent Supply Current 5.5
Min
1.50
0.7 VCC
1.9
2.9
4.4
2.58
3.94
TA = 25°C
Typ
2.0
3.0
4.5
0.0
0.0
0.0
Max
0.50
0.3 VCC
0.1
0.1
0.1
0.36
0.36
±0.1
2.0
TA = −40°C to +85°C
Min Max
1.50
0.7 VCC
0.50
0.3 VCC
1.9
2.9
4.4
2.48
3.80
0.1
0.1
0.1
0.44
0.44
±1.0
20.0
Units
Conditions
V
V
VIN = VIH IOH = −50 µA
V or VIL
V IOH = −4 mA
IOH = −8 mA
VIN = VIH IOL = 50 µA
V or VIL
V IOL = 4 mA
IOL = 8 mA
µA VIN = 5.5V or GND
µA VIN = VCC or GND
www.fairchildsemi.com
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