M74HC241TTR [STMICROELECTRONICS]
OCTAL BUS BUFFER WITH 3 STATE OUTPUTS (NON INVERTED); 具有三态输出八路总线缓冲器（非反相）
| 型号： | M74HC241TTR |
| 厂家： | 
ST |
| 描述： | OCTAL BUS BUFFER WITH 3 STATE OUTPUTS (NON INVERTED) |
| 文件： | 总10页 (文件大小：202K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
M74HC241
OCTAL BUS BUFFER
WITH 3 STATE OUTPUTS (NON INVERTED)
■
■
■
■
■
■
■
HIGH SPEED:
= 10ns (TYP.) at V = 6V
t
PD
CC
LOW POWER DISSIPATION:
= 4µA(MAX.) at T =25°C
I
CC
A
HIGH NOISE IMMUNITY:
= V = 28 % V (MIN.)
V
NIH
NIL
CC
DIP
SOP
TSSOP
T & R
SYMMETRICAL OUTPUT IMPEDANCE:
|I | = I = 6mA (MIN)
OH
OL
BALANCED PROPAGATION DELAYS:
t
t
ORDER CODES
PACKAGE
PLH
PHL
WIDE OPERATING VOLTAGE RANGE:
(OPR) = 2V to 6V
TUBE
V
CC
DIP
SOP
M74HC241B1R
M74HC241M1R
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 241
M74HC241RM13TR
M74HC241TTR
TSSOP
DESCRIPTION
The 74HC241 is an advanced high-speed CMOS
OCTAL BUS BUFFER (3-STATE) fabricated with
silicon gate C MOS technology.
Each G and G control inputs governs four BUS
BUFFERs.
This device is designed to be used with 3 state
memory address drivers, etc.
All inputs are equipped with protection circuits
against static discharge and transient excess
voltage.
2
PIN CONNECTION AND IEC LOGIC SYMBOLS
July 2001
1/10
M74HC241
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
PIN No
SYMBOL
1G
NAME AND FUNCTION
1
Output Enable Input
2, 4, 6, 8
9, 7, 5, 3
1A1 to 1A4 Data Inputs
2Y1 to 2Y4 Data Outputs
2A1 to 2A4 Data Inputs
11, 13, 15,
17
18, 16, 14,
12
1Y1 to 1Y4 Data Outputs
19
10
20
2G
Output Enable Input
GND
Ground (0V)
V
Positive Supply Voltage
CC
TRUTH TABLE
INPUTS
OUTPUT
1Yn
INPUTS
OUTPUT
2Yn
1G
1An
2G
2An
L
L
L
H
X
L
H
Z
H
H
L
L
H
X
L
H
Z
H
X : Don’t Care
Z : High Impedance
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
O
CC
V
DC Output Voltage
DC Input Diode Current
DC Output Diode Current
DC Output Current
-0.5 to V + 0.5
V
CC
I
± 20
± 20
mA
mA
mA
mA
mW
°C
IK
I
OK
I
± 35
O
I
or I
DC V
or Ground Current
CC
± 70
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
2 to 6
0 to V
V
V
CC
V
Input Voltage
I
CC
V
Output Voltage
0 to V
CC
V
O
T
Operating Temperature
Input Rise and Fall Time
-55 to 125
0 to 1000
0 to 500
0 to 400
°C
ns
ns
ns
op
V
V
V
= 2.0V
= 4.5V
= 6.0V
CC
CC
CC
t , t
r
f
2/10
M74HC241
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
2.0
4.5
6.0
2.0
4.5
6.0
2.0
1.5
3.15
4.2
1.5
3.15
4.2
1.5
3.15
4.2
IH
V
V
V
Low Level Input
Voltage
0.5
1.35
1.8
0.5
1.35
1.8
0.5
1.35
1.8
IL
V
High Level Output
Voltage
I =-20 µA
1.9
4.4
5.9
2.0
4.5
6.0
1.9
4.4
1.9
4.4
OH
O
I =-20 µA
4.5
6.0
4.5
6.0
2.0
4.5
6.0
4.5
6.0
O
I =-20 µA
5.9
5.9
V
V
O
I =-6.0 mA
4.18 4.31
4.13
5.63
4.10
5.60
O
I =-7.8 mA
5.68
5.8
0.0
0.0
0.0
O
V
Low Level Output
Voltage
I =20 µA
0.1
0.1
0.1
0.1
0.1
0.1
0.1
OL
O
I =20 µA
O
I =20 µA
0.1
0.1
O
I =6.0 mA
0.17 0.26
0.18 0.26
0.33
0.33
0.40
0.40
O
I =7.8 mA
O
I
Input Leakage
Current
I
V = V
or GND
CC
6.0
6.0
6.0
± 0.1
± 0.5
4
± 1
± 5
40
± 1
± 10
80
µA
µA
µA
I
I
I
High Impedance
Output Leakage
Current
OZ
V = V or V
IL
I
IH
V
= V or GND
CC
O
Quiescent Supply
Current
CC
V = V
or GND
CC
I
3/10
M74HC241
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
C
L
CC
(V) (pF)
Min. Typ. Max. Min. Max. Min. Max.
t
t
Output Transition
Time
2.0
25
7
60
12
75
19
90
18
TLH THL
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
50
50
ns
ns
ns
ns
ns
ns
6
10
13
15
t
t
Propagation Delay
Time
36
12
10
51
17
14
48
16
14
63
21
18
32
15
14
90
115
23
135
27
PLH PHL
18
15
20
23
130
26
165
33
195
39
150
50
22
28
33
t
t
t
High Impedance
Output Enable
Time
125
25
155
31
190
38
PZL PZH
R = 1 KΩ
L
21
25
32
165
33
205
41
250
50
R = 1 KΩ
150
50
L
28
35
43
t
High Impedance
Output Disable
Time
125
25
155
31
190
38
PLZ PHZ
R = 1 KΩ
L
21
26
32
CAPACITIVE CHARACTERISTICS
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.
C
Input Capacitance
5.0
5.0
5
10
10
10
pF
pF
IN
Output
Capacitance
C
10
OUT
C
Power Dissipation
Capacitance (note
1)
PD
5.0
33
pF
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
= C x V x f + I /8 (per circuit)
CC(opr)
PD CC IN CC
4/10
M74HC241
TEST CIRCUIT
TEST
SWITCH
Open
t
t
t
, t
PLH PHL
, t
V
CC
PZL PLZ
, t
GND
PZH PHZ
C
R
R
= 50pF/150pF or equivalent (includes jig and probe capacitance)
L
1
T
= 1KΩ or equivalent
= Z
of pulse generator (typically 50Ω)
OUT
WAVEFORM 1 :PROPAGATION DELAY TIME (f=1MHz; 50% duty cycle)
5/10
M74HC241
WAVEFORM 2 : OUTPUT ENABLE AND DISABLE TIME (f=1MHz; 50% duty cycle)
6/10
M74HC241
Plastic DIP-20 (0.25) MECHANICAL DATA
mm.
TYP
inch
TYP.
DIM.
MIN.
0.254
1.39
MAX.
MIN.
0.010
0.055
MAX.
a1
B
b
1.65
0.065
0.45
0.25
0.018
0.010
b1
D
E
e
25.4
1.000
8.5
2.54
22.86
0.335
0.100
0.900
e3
F
7.1
0.280
0.155
I
3.93
L
3.3
0.130
Z
1.34
0.053
P001J
7/10
M74HC241
SO-20 MECHANICAL DATA
mm.
inch
TYP.
DIM.
MIN.
TYP
MAX.
2.65
0.2
MIN.
MAX.
0.104
0.008
0.096
0.019
0.012
A
a1
a2
b
0.1
0.004
2.45
0.49
0.32
0.35
0.23
0.014
0.009
b1
C
0.5
0.020
c1
D
45° (typ.)
12.60
10.00
13.00
10.65
0.496
0.393
0.512
0.419
E
e
1.27
0.050
0.450
e3
F
11.43
7.40
0.50
7.60
1.27
0.75
0.291
0.020
0.300
0.050
0.029
L
M
S
8° (max.)
PO13L
8/10
M74HC241
TSSOP20 MECHANICAL DATA
mm.
inch
TYP.
DIM.
MIN.
TYP
MAX.
1.2
MIN.
MAX.
0.047
0.006
0.041
0.012
0.0089
0.260
0.260
0.176
A
A1
A2
b
0.05
0.8
0.15
1.05
0.30
0.20
6.6
0.002
0.031
0.007
0.004
0.252
0.244
0.169
0.004
0.039
1
0.19
0.09
6.4
c
D
6.5
6.4
0.256
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
E
c
D
E1
PIN 1 IDENTIFICATION
1
0087225C
9/10
M74HC241
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the
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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© 2001 STMicroelectronics - Printed in Italy - All Rights Reserved
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10/10
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