M74HCT74TTR [STMICROELECTRONICS]
DUAL D TYPE FLIP FLOP WITH PRESET AND CLEAR; 带预置和清除两个D型触发器
| 型号： | M74HCT74TTR |
| 厂家： | 
ST |
| 描述： | DUAL D TYPE FLIP FLOP WITH PRESET AND CLEAR |
| 文件： | 总10页 (文件大小：435K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
M74HCT74
DUAL D TYPE FLIP FLOP WITH PRESET AND CLEAR
■
■
■
■
■
■
HIGH SPEED :
= 48MHz (TYP.) at V = 4.5V
f
MAX
CC
LOW POWER DISSIPATION:
=2µA(MAX.) at T =25°C
I
CC
A
COMPATIBLE WITH TTL OUTPUTS :
= 2V (MIN.) V = 0.8V (MAX)
V
IH
IL
DIP
SOP
TSSOP
T & R
BALANCED PROPAGATION DELAYS:
t
t
PLH
PHL
SYMMETRICAL OUTPUT IMPEDANCE:
|I | = I = 4mA (MIN)
ORDER CODES
PACKAGE
OH
OL
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 74
TUBE
DIP
SOP
M74HCT74B1R
M74HCT74M1R
M74HCT74RM13TR
M74HCT74TTR
DESCRIPTION
The M74HCT74 is an high speed CMOS DUAL D
TYPE FLIP FLOP WITH CLEAR fabricated with
TSSOP
2
silicon gate C MOS technology.
The M74HCT74 is designed to directly interface
HSC MOS systems with TTL and NMOS
components.
All inputs are equipped with protection circuits
against static discharge and transient excess
voltage.
2
A signal on the D INPUT (nD) is transferred on the
Q OUTPUT during the positive going transition of
the clock pulse. CLEAR (CLR) and PRESET (PR)
are independent of the clock and accomplished by
a low on the appropriate input.
PIN CONNECTION AND IEC LOGIC SYMBOLS
August 2001
1/10
M74HCT74
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
PIN No
SYMBOL
NAME AND FUNCTION
Asynchronous Reset -
Direct Input
1,13
1CLR, 2CLR
1D, 2D
2, 12
Data Inputs
Clock Input
3, 11
1CK, 2CK (LOW-to-HIGH,
Edge-Triggered)
Asynchronous Set - Direct
Input
4, 10
5, 9
1PR, 2PR
1Q, 2Q
True Flip-Flop Outputs
Complement Flip-Flop
Outputs
6, 8
1Q, 2Q
7
GND
Vcc
Ground (0V)
14
Positive Supply Voltage
TRUTH TABLE
INPUTS
OUTPUTS
FUNCTION
CLR
PR
D
CK
Q
Q
L
H
L
H
L
L
X
X
X
X
X
X
L
H
H
H
L
CLEAR
PRESET
----
H
H
H
H
H
H
L
H
X
L
H
L
----
----
H
Q
Q
H
NO CHANGE
n
n
X : Don’t Care
LOGIC DIAGRAM
This logic diagram has not be used to estimate propagation delays
2/10
M74HCT74
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
V
Supply Voltage
-0.5 to +7
V
V
CC
V
DC Input Voltage
-0.5 to V + 0.5
I
CC
V
DC Output Voltage
DC Input Diode Current
DC Output Diode Current
DC Output Current
-0.5 to V + 0.5
V
O
CC
I
± 20
± 20
mA
mA
mA
mA
mW
°C
IK
I
OK
I
± 25
O
I
or I
DC V
or Ground Current
CC
± 50
CC
GND
P
Power Dissipation
500(*)
-65 to +150
300
D
T
Storage Temperature
Lead Temperature (10 sec)
stg
T
°C
L
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied
(*) 500mW at 65 °C; derate to 300mW by 10mW/°C from 65°C to 85°C
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
Value
Unit
V
Supply Voltage
4.5 to 5.5
V
V
CC
V
Input Voltage
0 to V
I
CC
V
Output Voltage
0 to V
V
O
CC
T
Operating Temperature
-55 to 125
0 to 500
°C
ns
op
t , t
Input Rise and Fall Time (V = 4.5 to 5.5V)
CC
r
f
DC SPECIFICATIONS
Test Condition
Value
-40 to 85°C -55 to 125°C Unit
T
= 25°C
Symbol
Parameter
A
V
CC
(V)
Min. Typ. Max. Min. Max. Min. Max.
V
High Level Input
Voltage
4.5
to
IH
2.0
2.0
2.0
V
5.5
V
Low Level Input
Voltage
4.5
to
IL
0.8
0.1
0.8
0.8
V
V
5.5
V
High Level Output
Voltage
I =-20 µA
4.4
4.5
4.4
4.4
OH
O
4.5
I =-4.0 mA
4.18 4.31
0.0
4.13
4.10
O
V
Low Level Output
Voltage
I =20 µA
0.1
0.1
OL
O
4.5
5.5
V
I =4.0 mA
0.17 0.26
0.33
0.40
O
I
Input Leakage
Current
I
V = V
or GND
± 0.1
± 1
± 1
µA
I
CC
CC
I
Quiescent Supply
Current
CC
V = V
or GND
5.5
5.5
2
20
40
µA
I
∆ I
Additional Worst
Case Supply
Current
Per Input pin
V = 0.5V or
2.0
2.9
3.0
mA
CC
I
V = 2.4V
I
Other Inputs at
V
or GND
CC
I
= 0
O
3/10
M74HCT74
AC ELECTRICAL CHARACTERISTICS (C = 50 pF, Input t = t = 6ns)
L
r
f
Test Condition
Value
T
= 25°C
Symbol
Parameter
-40 to 85°C -55 to 125°C Unit
A
V
CC
(V)
Min. Typ. Max. Min. Max. Min. Max.
t
t
Output Transition
Time
TLH THL
4.5
4.5
4.5
4.5
8
15
33
30
19
41
38
22
50
45
ns
ns
t
t
t
Propagation Delay
Time (CLOCK-Q)
PLH PHL
21
18
48
t
Propagation Delay
Time (CL,PR - Q,Q)
PLH PHL
ns
f
Maximum Clock
Frequency
MAX
27
22
18
MHz
t
t
Minimum Pulse
Width (CLOCK)
W(H)
4.5
6
15
19
23
ns
W(L)
W(L)
t
Minimum Pulse
Width (CLR, PR)
4.5
4.5
4.5
8
7
15
15
0
19
19
0
23
23
0
ns
ns
ns
t
t
Minimum Set-Up
Time
s
Minimum Hold
Time
h
t
Minimum Removal
Time (CLR, PR to
CLOCK)
REM
4.5
1
5
5
6
5
8
ns
CAPACITIVE CHARACTERISTICS
Test Condition
Value
T
= 25°C
Symbol
Parameter
-40 to 85°C -55 to 125°C Unit
A
V
CC
(V)
Min. Typ. Max. Min. Max. Min. Max.
C
Input Capacitance
5
10
10
10
pF
pF
IN
C
Power Dissipation
Capacitance (note
1)
PD
32
1) C is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without
PD
load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. I
FLOP)
= C x V x f + I /2 (per FLIP/
CC(opr)
PD CC IN CC
4/10
M74HCT74
TEST CIRCUIT
C
R
= 50pF or equivalent (includes jig and probe capacitance)
L
T
= Z
of pulse generator (typically 50Ω)
OUT
WAVEFORM 1 : PROPAGATION DELAY, MINIMUM SETUP AND HOLD TIME, CK MINIMUM PULSE
WIDTH AND MAXIMUM FREQUENCY (f=1MHz; 50% duty cycle)
5/10
M74HCT74
WAVEFORM 2 : MINIMUM PULSE WIDTH, PROPAGATION DELAY (f=1MHz; 50% duty cycle)
WAVEFORM 3 : MINIMUM PULSE WIDTH AND REMOVAL TIME (f=1MHz; 50% duty cycle)
6/10
M74HCT74
Plastic DIP-14 MECHANICAL DATA
mm.
inch
TYP.
DIM.
MIN.
0.51
1.39
TYP
MAX.
MIN.
0.020
0.055
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
15.24
0.335
0.100
0.600
e3
F
7.1
5.1
0.280
0.201
I
L
3.3
0.130
Z
1.27
2.54
0.050
0.100
P001A
7/10
M74HCT74
SO-14 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
0.003
1.65
0.46
0.25
0.35
0.19
0.013
0.007
b1
C
0.5
0.019
c1
D
45° (typ.)
8.55
5.8
8.75
6.2
0.336
0.228
0.344
0.244
E
e
1.27
7.62
0.050
0.300
e3
F
3.8
4.6
0.5
4.0
5.3
0.149
0.181
0.019
0.157
0.208
0.050
0.026
G
L
1.27
0.68
M
S
8° (max.)
PO13G
8/10
M74HCT74
TSSOP14 MECHANICAL DATA
mm.
inch
TYP.
DIM.
MIN.
TYP
MAX.
1.2
MIN.
MAX.
0.047
0.006
0.041
0.012
0.0089
0.201
0.260
0.176
A
A1
A2
b
0.05
0.8
0.15
1.05
0.30
0.20
5.1
0.002
0.031
0.007
0.004
0.193
0.244
0.169
0.004
0.039
1
0.19
0.09
4.9
c
D
5
6.4
0.197
0.252
E
6.2
6.6
E1
e
4.3
4.4
4.48
0.173
0.65 BSC
0.0256 BSC
K
0°
8°
0°
8°
L
0.45
0.60
0.75
0.018
0.024
0.030
A2
A
K
L
b
e
A1
c
E
D
E1
PIN 1 IDENTIFICATION
1
0080337D
9/10
M74HCT74
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consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from
its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications
mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information
previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or
systems without express written approval of STMicroelectronics.
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10/10
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