M54HC7245 [STMICROELECTRONICS]
OCTAL BUS TRANSCEIVER (3-STATE):HC7645 NONINVERTING HC7640 INVERTING ,HC7643 INVERTING/NONINVERTING; 八路总线收发器（ 3 - STATE ） ： HC7645 HC7640同相颠倒， HC7643反相/同相
| 型号： | M54HC7245 |
| 厂家： | 
ST |
| 描述： | OCTAL BUS TRANSCEIVER (3-STATE):HC7645 NONINVERTING HC7640 INVERTING ,HC7643 INVERTING/NONINVERTING |
| 文件： | 总10页 (文件大小：259K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
M54HC7245/7640/7643/7645
M74HC7245/7640/7643/7645
OCTAL BUS TRANSCEIVER (3-STATE): HC7645 NON INVERTING
HC7640 INVERTING , HC7643 INVERTING/NON INVERTING
.
.
.
.
.
.
.
.
HIGH SPEED
t
PD = 12 ns (TYP.) at VCC = 5V
LOW POWER DISSIPATION
ICC = 4 µA (MAX.) at TA = 25 oC
HIGH NOISE IMMUNITY
VH = 1.1 (TYP.) at VCC = 5V
OUTPUT DRIVE CAPABILITY
15 LSTTL LOADS
SYMMETRICAL OUTPUT IMPEDANCE
|IOH| = IOL = 6 mA (MIN)
BALANCED PROPAGATION DELAYS
tPLH = tPHL
WIDE OPERATING RANGE
VCC (OPR) = 2V to 6V
PIN AND FUNCTION COMPATIBLE
WITH 54/74LS245/640/643
B1R
(Plastic Package)
F1R
(Ceramic Package)
M1R
(Micro Package)
C1R
(Chip Carrier)
ORDER CODES :
M54HCXXXXF1R
M74HCXXXXB1R
M74HCXXXXM1R
M74HCXXXXC1R
DESCRIPTION
TheM54/74HC7245 HC7640, HC7643 and HC7645
utilise silicon gate C2MOS technology to achive
operating speeds equivalent to LSTTL devices.
Along with the low power dissipation and high noise
immunity of standads C2MOS integrated circuit, it
possesses the capability to drive 15 LSTTL loads.
These IC’s are intended for two-way asynchronous
communication between data buses, and the
direction of data trasmission is determined by DIR
input. Theenableinput(G)canbeused todisable the
device so that the buses are effectively isolated.
The HC7245/640/7643/7645 have the same pin
configuration and function as the HC245/640/643
and they have a hysteresis characteristics with each
input, so HC7245/7640/7643/7645 can be used as a
line receiver, etc. All input are equipped with
protection circuits against static discharge and
transient excess voltage.
IT IS PROHIBITEDTOAPPLY A SIGNAL TOA BUS
TERMINAL WHEN IT IS IN OUTPUT MODE AND
WHEN A BUS THERMINAL IS FLOATING (HIGH
IMPEDANCE STATE), IT IS REQUESTED TO FIX
THE INPUT LEVEL BY MEANS OF EXTERNAL
PULL DOWN OR PULL UP RESISTOR.
PIN CONNECTION (top view)
HC7640
HC7643
HC7645/HC7245
HC7245 is electrically and funcutionally the same as the HC7645
January 1994
1/10
M54/M74HC7245/7640/7643/7645
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
PIN No
SYMBOL
DIR
NAME AND FUNCTION
Directional Control
1
2, 3, 4, 5,
6, 7, 8, 9
A1 to A8
Data Inputs/Outputs
18, 17, 16,
15, 14, 13,
12, 11
B1 to B8
G
Data Inputs/Outputs
19
Output Enabel Input
(Active LOW)
10
20
GND
VCC
Ground (0V)
Positive Supply Voltage
IEC LOGIC SYMBOLS
HC7640
HC7643
HC7645
TRUTH TABLE
INPUT
FUNCTION
A BUS
OUTPUT
HC7643
G
L
DIR
L
B BUS
INPUT
OUTPUT
Z
HC7640
HC7645/7245
OUTPUT
INPUT
Z
A = B
B = A
Z
A = B
B = A
Z
A = B
B = A
Z
L
H
H
X
X: ”H” or ”L”
Z: High impedance
2/10
M54/M74HC7245/7640/7643/7645
ABSOLUTE MAXIMUM RATINGS
Symbol
VCC
VI
Parameter
Value
-0.5 to +7
-0.5 to VCC + 0.5
-0.5 to VCC + 0.5
± 20
Unit
V
Supply Voltage
DC Input Voltage
V
VO
DC Output Voltage
V
IIK
DC Input Diode Current
DC Output Diode Current
DC Output Source Sink Current Per Output Pin
mA
mA
mA
mA
mW
oC
IOK
± 20
IO
± 35
ICC or IGND DC VCC or Ground Current
± 70
PD
Tstg
TL
Power Dissipation
500 (*)
Storage Temperature
Lead Temperature (10 sec)
-65 to +150
300
oC
Absolute MaximumRatingsare those values beyond whichdamage tothe device may occur. Functional operation under these condition isnotimplied.
(*) 500 mW: 65 oC derate to 300 mW by 10mW/oC: 65 oC to 85 oC
RECOMMENDED OPERATING CONDITIONS
Symbol
VCC
VI
Parameter
Value
2 to 6
Unit
V
Supply Voltage
Input Voltage
0 to VCC
0 to VCC
V
VO
Output Voltage
V
Top
Operating Temperature:
M54HC Series
M74HC Series
-55 to +125
-40 to +85
oC
oC
3/10
M54/M74HC7245/7640/7643/7645
DC SPECIFICATIONS
Test Conditions
Value
TA = 25 oC
54HC and 74HC
-40 to 85 oC -55 to 125 oC
Symbol
Parameter
Unit
VCC
74HC
54HC
(V)
Min. Typ. Max. Min. Max. Min. Max.
VP
Positive
Threshold Voltage
(An, Bn inputs)
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
2.0
4.5
6.0
4.5
6.0
1
1.25
2.7
3.5
0.65
1.6
2.3
0.6
1.1
1.2
1.5
3.15
4.2
0.9
2
1
1.5
3.15
4.2
0.9
2
1
1.5
3.15
4.2
0.9
2
V
V
V
V
V
2.3
3
2.3
3
2.3
3
VN
VH
Negative
Threshold Voltage
(An, Bn inputs)
0.3
1.13
1.5
0.3
0.6
0.8
1.5
3.15
4.2
0.3
1.13
1.5
0.3
0.6
0.8
1.5
3.15
4.2
0.3
1.13
1.5
0.3
0.6
0.8
1.5
3.15
4.2
2.6
1
2.6
1
2.6
1
Hysteresiis
Voltage
(An, Bn inputs)
1.4
1.7
1.4
1.7
1.4
1.7
VIH
High Level Input
Voltage
(DIR, G inputs)
VIL
Low Level Input
Voltage
(DIR, G inputs)
0.5
1.35
1.8
0.5
1.35
1.8
0.5
1.35
1.8
VOH
High Level
Output Voltage
1.9
4.4
5.9
2.0
4.5
6.0
1.9
4.4
1.9
4.4
VI =
VIH
or
IO=-20 µA
V
V
5.9
5.9
VIL
IO=-6.0 mA 4.18 4.31
4.13
5.63
4.10
5.60
IO=-7.8 mA 5.68
5.8
0.0
0.0
0.0
VOL
Low Level Output 2.0
Voltage
0.1
0.1
0.1
0.1
0.1
0.1
0.1
VI =
VIH
or
IO= 20 µA
4.5
6.0
4.5
6.0
0.1
0.1
VIL
IO= 6.0 mA
IO= 7.8 mA
0.17 0.26
0.18 0.26
±0.1
0.33
0.33
±1
0.40
0.40
±1
II
Input Leakage
6.0
VI = VCC or GND
µA
µA
µA
Current
IOZ
ICC
Quiescent Supply 6.0 VI = VCC or GND
Current
æ0.5
4
±5
±1
Quiescent Supply 6.0 VI = VCC or GND
Current
40
80
4/10
M54/M74HC7245/7640/7643/7645
AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, Input tr = tf = 6 ns)
Test Conditions
Value
TA = 25 oC
54HC and 74HC
-40 to 85 oC -55 to 125 oC
Symbol
Parameter
Unit
VCC
(V)
74HC
54HC
Min. Typ. Max. Min. Max. Min. Max.
tTLH
tTHL
Output Transition
Time
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
25
7
60
12
75
15
90
18
ns
ns
ns
ns
6
10
13
15
tPLH
tPHL
Propagation
Delay Time
61
15
13
77
19
16
84
21
18
5
125
25
156
31
190
38
21
27
32
tPZL
tPZH
Output Enable
Time
150
30
188
38
225
45
RL = 1 KΩ
RL = 1 KΩ
26
32
38
tPLZ
tPHZ
Output Disable
Time
150
30
188
38
225
45
26
32
38
CIN
Input Capacitance
10
10
10
pF
pF
COUT
Output
Capacitance
CPD (*) Power Dissipation
Capacitance
pF
(*) CPD isdefined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without load.
(Refer to Test Circuit). Average operting current can be obtained by the followingequation. ICC(opr) = CPD • VCC • fIN + ICC/4 (per Gate)
SWITCHING CHARACTERISTICS TEST WAVEFORM
VCC
GND
VCC
GND
5/10
M54/M74HC7245/7640/7643/7645
Plastic DIP20 (0.25) MECHANICAL DATA
mm
inch
TYP.
DIM.
MIN.
0.254
1.39
TYP.
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
6/10
M54/M74HC7245/7640/7643/7645
Ceramic DIP20 MECHANICAL DATA
mm
inch
TYP.
DIM.
MIN.
TYP.
MAX.
25
MIN.
MAX.
0.984
0.307
A
B
7.8
D
E
3.3
0.130
0.900
0.5
1.78
0.020
0.070
e3
F
22.86
2.29
0.4
2.79
0.55
1.52
0.31
1.27
0.090
0.016
0.050
0.009
0.020
0.110
0.022
0.060
0.012
0.050
G
I
1.27
0.22
0.51
L
M
N1
P
4° (min.), 15° (max.)
7.9
8.13
5.71
0.311
0.320
0.225
Q
P057H
7/10
M54/M74HC7245/7640/7643/7645
SO20 MECHANICAL DATA
mm
inch
TYP.
DIM.
MIN.
TYP.
MAX.
2.65
0.20
2.45
0.49
0.32
MIN.
MAX.
0.104
0.007
0.096
0.019
0.012
A
a1
a2
b
0.10
0.004
0.35
0.23
0.013
0.009
b1
C
0.50
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
0.19
0.299
0.050
0.029
L
M
S
8° (max.)
P013L
8/10
M54/M74HC7245/7640/7643/7645
PLCC20 MECHANICAL DATA
mm
inch
TYP.
DIM.
MIN.
9.78
8.89
4.2
TYP.
MAX.
10.03
9.04
MIN.
0.385
0.350
0.165
MAX.
0.395
0.356
0.180
A
B
D
4.57
d1
d2
E
2.54
0.56
0.100
0.022
7.37
8.38
0.290
0.330
0.004
e
1.27
5.08
0.38
0.050
0.200
0.015
e3
F
G
0.101
M
M1
1.27
1.14
0.050
0.045
P027A
9/10
M54/M74HC7245/7640/7643/7645
Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsability for the
consequences of use of such information nor for any infringement of patents or other rights of third parties which may results from its use. No
license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specificationsmentioned
in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied.
SGS-THOMSON Microelectronicsproductsare notauthorized foruse ascritical componentsin life support devices or systems without express
written approval of SGS-THOMSON Microelectonics.
1994 SGS-THOMSON Microelectronics - All Rights Reserved
SGS-THOMSON Microelectronics GROUP OF COMPANIES
Australia - Brazil - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands -
Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A
10/10
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