Fairchild MM74C74 service manual
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MM74C74
Dual D-Type Flip-Flop
MM74C74 Dual D-Type Flip-Flop
October 1987
Revised January 1999
General Description
The MM74C74 dual D- type fli p-f lop i s a m on ol ithi c co mp lementary MOS (C MOS) integrated circuit constructe d with
N- and P-channel enhancement transisto rs. Each flip-flop
has independent data, preset, clear and clock inputs and Q
outputs. The logic l evel present at the data input i s
and Q
transferred to the output during the positive going transition
of the clock pulse. Preset or clear is independent of the
clock an d acc om pl i s he d b y a l o w l e vel at the pr e s et or cl ea r
input.
Features
■ Supply voltage range: 3V to 15V
■ Tenth power TTL compatible: Drive 2 LPT
2
L loads
■ High noise immunity: 0.45 V
■ Low power: 50 nW (typ.)
■ Medium speed operation: 10 MHz (typ.) with 10V
supply
Applications
• Automotive
• Data terminals
• Instrumentation
• Medical electronics
• Alarm system
• Industrial electronics
• Remote metering
• Computers
CC
(typ.)
Ordering Code:
Order Number Package Number Package Description
MM74C74M M14A 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150” Narrow
MM74C74N N14A 14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to t he ordering code.
Connection Diagram
Pin Assignments for DIP and SO IC
Truth Table
Preset Clear Q
0000
0110
1001
11Q
Note 1: No change in output from previous state.
n
(Note 1) Qn (Note 1)
n
Q
n
Note: A logic “0” on clear s et s Q t o logic “0”.
A logic “0” on preset se ts Q to logic “1”.
© 1999 Fairchild Semiconductor Corporation DS005885.prf www.fairchildsemi.com
Top View
Logic Diagram
MM74C74
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Absolute Maximum Ratings(Note 2)
Voltage at Any Pin (Note 2) −0.3V to VCC +0.3V
Operating Temperature Range −40°C to +85°C
Storage Temperature Range −65°C to +150°C
Power Dissipation
Dual-In-Line 700 mW
Small Outline 500 mW
Lead Temperature
(Soldering, 10 seconds ) 260°C
Operating V
(Max) 18V
V
CC
Range 3V to 15V
CC
Note 2: “Absolute Maximum Rat ings” are tho se values beyond which the
safety of the device cannot be guaranteed. E x c ept for “ Operating Temperature Range” they are not mea nt to imply that the devices sh ould be operated at these limits. The table of “Electrical Characteristics” provides
conditions for actual device o peration.
DC Electrical Characteristics
Min/Max limits apply across temperature range unless otherwise noted
Symbol Parameter Conditions Min Typ Max Units
CMOS TO CMOS
V
IN(1)
V
IN(0)
V
OUT(1)
V
OUT(0)
I
IN(1)
I
IN(0)
I
CC
CMOS/LPTTL INTERFACE
V
IN(1)
V
IN(0)
V
OUT(1)
V
OUT(0)
OUTPUT DRIVE (See Family Characteristics Data Sheet)
I
SOURCE
I
SOURCE
I
SINK
I
SINK
Logical “1” Input Voltage VCC = 5V 3.5 V
VCC = 10V 80 V
Logical “0” Input Voltage VCC = 5V 1.5 V
VCC = 10V 2.0 V
Logical “1” Output Voltage VCC = 5V 4.5 V
VCC = 10V 9.0 V
Logical “0” Output Voltage VCC = 5V 0.5 V
VCC = 10V 1.0 V
Logical “1” Input Current VCC = 15V 1.0 µA
Logical “0” Input Current VCC = 15V −1.0 µA
Supply Current VCC = 15V 0.05 60 µA
Logical “1” Input Voltage VCC = 4.75V VCC−1.5
Logical “0” Input Voltage VCC = 4.75V 0.8 V
Logical “1” Output Voltage VCC = 4.75V, ID = −360 µA2.4 V
Logical “0” Output Voltage VCC = 4.75V, ID = 360 µA0.4V
Output Source Current VCC = 5V, V
TA = 25°C, V
Output Source Current VCC = 10V, V
TA = 25°C, V
Output Sink Current VCC = 5V, V
TA = 25°C, V
Output Sink Current VCC = 10V, V
TA = 25°C, V
= 0V −1.75 mA
IN(0)
= 0V
OUT
= 0V −8.0 mA
IN(0)
= 0V
OUT
= 5V 1.75 mA
IN(1)
= V
OUT
CC
= 10V 8.0 mA
IN(1)
= V
OUT
CC
MM74C74
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