M74HC640F1R [STMICROELECTRONICS]
OCTAL BUS TRANSCEIVER 3-STATE: HC245 NON INVERTING HC640 INVERTING, HC643 INVERTING/NON INVERTING; 八路总线收发器3 -STATE ： HC245非反相HC640反转， HC643反相/非反相
| 型号： | M74HC640F1R |
| 厂家： | 
ST |
| 描述： | OCTAL BUS TRANSCEIVER 3-STATE: HC245 NON INVERTING HC640 INVERTING, HC643 INVERTING/NON INVERTING |
| 文件： | 总11页 (文件大小：268K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
M54/74HC245/640/643
M54/74HC245/640/643
OCTAL BUS TRANSCEIVER (3-STATE): HC245 NON INVERTING
HC640 INVERTING, HC643 INVERTING/NON INVERTING
.
HIGH SPEED
PD = 10 ns (TYP.) at VCC = 5V
LOW POWER DISSIPATION
ICC = 4 µA (MAX.) at TA = 25 oC
HIGH NOISE IMMUNITY
t
.
.
.
.
.
.
.
V
NIH = VINL = 28 % VCC (MIN.)
OUTPUT DRIVE CAPABILITY
15 LSTTL LOADS
SYMMETRICAL OUTPUT IMPEDANCE
|IOH| = IOL = 6 mA (MIN)
BALANCED PROPAGATION DELAYS
tPLH = tPHL
WIDE OPERATING VOLTAGE RANGE
VCC (OPR) = 2 V TO 6 V
B1R
F1R
(Plastic Package)
(Ceramic Package)
M1R
C1R
(Micro Package)
(Chip Carrier)
PIN AND FUNCTION COMPATIBLE
WITH 54/74LS245/640/643
ORDER CODES :
M54HCXXXF1R
M74HCXXXM1R
M74HCXXXB1R
M74HCXXXC1R
DESCRIPTION
The M54/74HC245, HC640 and HC643 utilise
silicon gate C2MOS technology to achive operating
speeds equivalent to LSTTL devices.
All input are equipped with protection circuits
against staticdischarge and transient discharge and
transient excess voltage.
Along with the low power dissipation and high noise
immunity of standards 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. The enable input (G) can be used to disable
the device so that the buses are effectively isolated.
IT IS PROHIBITED TO APPLY A SIGNAL TO A
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)
HC245
HC640
HC643
October 1993
1/11
M54/M74HC245/640/643
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
HC245
HC640
HC643
TRUTH TABLE
INPUT
FUNCTION
OUTPUT
HC640
G
L
DIR
L
A BUS
OUTPUT
INPUT
Z
B BUS
INPUT
OUTPUT
Z
HC245
HC643
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
2/11
M54/M74HC245/640/643
LOGIC DIAGRAM (HC640)
NOTE: IN CASE OF HC245 OR HC643, INPUT INVERTERS MARKED* AT A BUS AND B BUS ARE ELIMINATED RESPECTIVELY
ABSOLUTE MAXIMUM RATING
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
DC Output Voltage
V
VO
V
IIK
DC Input Diode Current
mA
mA
mA
mA
mW
oC
IOK
DC Output Diode Current
± 20
IO
DC Output Source Sink Current Per Output Pin
± 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
3/11
M54/M74HC245/640/643
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
tr, tf
Input Rise and Fall Time
VCC = 2 V
VCC = 4.5 V
VCC = 6 V
0 to 1000
0 to 500
0 to 400
ns
DC SPECIFICATIONS
Test Conditions
Value
-40 to 85 oC -55 to 125 oC
74HC 54HC
TA = 25 oC
54HC and 74HC
Symbol
Parameter
Unit
VCC
(V)
Min. Typ. Max. Min. Max. Min. Max.
VIH
High Level Input
Voltage
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
4.5
6.0
1.5
3.15
4.2
1.5
3.15
4.2
1.5
3.15
4.2
V
V
VIL
Low Level Input
Voltage
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
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
V
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
Current
IOZ
ICC
3 State Output
Off State Current
6.0
VI = VIH or VIL
VO = VCC or GND
±0.5
±5.0
µA
Quiescent Supply 6.0 VI = VCC or GND
Current
4
40
80
µA
4/11
M54/M74HC245/640/643
AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, Input tr = tf = 6 ns)
Test Conditions
Value
-40 to 85 oC -55 to 125 oC
74HC 54HC
TA = 25 oC
54HC and 74HC
Symbol
Parameter
Unit
VCC CL
(V) (pF)
2.0
Min. Typ. Max. Min. Max. Min. Max.
tTLH
tTHL
Output Transition
Time
25
7
60
12
75
19
90
18
50
ns
ns
ns
ns
ns
ns
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
6
10
13
15
tPLH
tPHL
Propagation
Delay Time
33
12
10
48
16
14
48
16
14
63
21
18
37
17
15
5
90
115
23
135
27
50
18
15
20
23
120
24
150
30
180
36
150
20
26
31
tPZL
tPZH
Output Enable
Time
150
30
190
38
225
45
50 RL = 1KΩ
150 RL = 1KΩ
50 RL = 1KΩ
26
32
38
180
36
225
45
270
54
31
38
46
tPLZ
tPHZ
Output Disable
Time
150
30
190
38
225
45
26
32
38
CIN
Input Capacitance
DIR, G
An, Bn
10
10
10
pF
pF
CI/OUT
Output
Capacitance
13
CPD (*) Power Dissipation
Capacitance
HC245
HC640/643
39
37
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/8 (per circuit)
5/11
M54/M74HC245/640/643
SWITCHING CHARACTERISTICS TEST WAVEFORM
TEST CIRCUIT ICC (Opr.)
CPD CALCULATION
CPD is to be calculated with the following
formula by using the measured value of ICC
(Opr.) in the test circuit opposite.
I
CC (Opr.)
CPD
=
f IN x VCC
6/11
M54/M74HC245/640/643
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
7/11
M54/M74HC245/640/643
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
8/11
M54/M74HC245/640/643
SO20 MECHANICAL DATA
mm
inch
DIM.
MIN.
TYP.
MAX.
2.65
0.20
2.45
0.49
0.32
MIN.
TYP.
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
9/11
M54/M74HC245/640/643
PLCC20 MECHANICAL DATA
mm
inch
TYP.
DIM.
MIN.
TYP.
MAX.
10.03
9.04
MIN.
0.385
0.350
0.165
MAX.
0.395
0.356
0.180
A
B
9.78
8.89
4.2
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
10/11
M54/M74HC245/640/643
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
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11/11
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