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74245芯片资料

M54/74HC245/640/643M54/74HC245/640/643

October 1993

HC640INVERTING,HC643INVERTING/NON INVERTING

OCTAL BUS TRANSCEIVER (3-STATE):HC245NON INVERTING

B1R

(Plastic Package)ORDER CODES :

M54HCXXXF1R M74HCXXXM1R M74HCXXXB1R M74HCXXXC1R

F1R

(Ceramic Package)M1R

(Micro Package)C1R (Chip Carrier)

PIN CONNECTION (top view)

.HIGH SPEED

t PD =10ns (TYP.)at V CC =5V .LOW POWER DISSIPATION

I CC =4μA (MAX.)at T A =25o

C .HIGH NOISE IMMUNITY

V NIH =V INL =28%V CC (MIN.).OUTPUT DRIVE CAPABILITY 15LSTTL LOADS

.SYMMETRICAL OUTPUT IMPEDANCE |I OH |=I OL =6mA (MIN)

.BALANCED PROPAGATION DELAYS t PLH =t PHL

.WIDE OPERATING VOLTAGE RANGE V CC (OPR)=2V TO 6V

PIN AND FUNCTION COMPATIBLE WITH 54/74LS245/640/643

DESCRIPTION

The M54/74HC245,HC640and HC643utilise silicon gate C2MOS technology to achive operating speeds equivalent to LSTTL devices.

Along with the low power dissipation and high noise

immunity of standards C 2

MOS integrated circuit,it possesses the capability to drive 15LSTTL 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.

All input are equippe d with protection circuits

against staticdischarge and transient discharge and transient excess voltage.

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.

HC245

HC640

HC643

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INPUT AND OUTPUT EQUIVALENT CIRCUIT

PIN DESCRIPTION

PIN No SYMBOL NAME AND FUNCTION 1DIR Directional Control 2,3,4,5,6,7,8,9A1to A8Data Inputs/Outputs 18,17,16,15,14,13,12,11

B1to B8

Data Inputs/Outputs

19G

Output Enabel Input

(Active LOW)10GND

Ground (0V)

V CC

Positive Supply Voltage

IEC LOGIC SYMBOLS

TRUTH TABLE

INPUT

FUNCTION

OUTPUT

G DIR A BUS B BUS

HC245HC640HC643L L

OUTPUT INPUT A =B A =B A =B L H INPUT OUTPUT

B =A B =A B =A H

X:”H”or ”L”

Z:High impeda nce

HC245

HC640

HC643

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LOGIC DIAGRAM (HC640)

ABSOLUTE MAXIMUM RATING

Symbol Parameter

Value Unit V CC Supply Voltage

-0.5to +7V V I DC Input Voltage -0.5to V CC +0.5

V V O DC Output Voltage

-0.5to V CC +0.5

V I IK

DC Input Diode Current

±20mA I OK DC Output Diode Current

±20mA I O DC Output Source Sink Current Per Output Pin ±35mA I CC or I GND

DC V CC or Ground Current ±70mA P D Power Dissipation 500(*)mW T stg Storage Temperature -65to +150

o C

T L

Lead Temperature (10sec)

300

C Absolute Maximum Ratings are those values beyond whichdamage to the device may occu r.Functiona l ope ration und er these cond ition isnotimplied.(*)500mW:?65o C derate to 300mW by 10mW/o C:65o C to 85o C

NOTE:IN CASE OF HC245OR HC643,INPUT INVERTERS MARKED*AT A BUS AND B BUS ARE ELIMINATED RESPECTIVELY

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RECOMMENDED OPERATING CONDITIONS

Symbol Parameter

Value Unit V CC Supply Voltage 2to 6V V I Input Voltage 0to V CC V V O Output Voltage 0to V CC V T op Operating Temperature:M54HC Series M74HC Series

-55to +125-40to +85o

C o C t r ,t f

Input Rise and Fall Time

V CC =2V 0to 1000ns

V CC =4.5V 0to 500V CC =6V

0to 400

DC SPECIFICATIONS

Symbol

Parameter

Test Conditions

Value

Unit V CC (V)T A =25o C

54HC and 74HC

-40to 85o C 74HC -55to 125o C

54HC

Min.Typ.

Max.

Min.Max.

V IH

High Level Input

Voltage 2.0 1.5 1.5 1.5V

4.5 3.15 3.15 3.156.0 4.2

4.2

V IL

Low Level Input Voltage 2.00.50.50.5

4.5 1.35

1.35

6.0 1.8

1.8

1.8V OH

High Level Output Voltage

2.0V I =

V IH or

V IL I O =-20μA 1.9

2.0

1.9

V 4.5 4.4 4.5 4.4

4.46.0

5.9

6.0 5.9 5.94.5

I O =-6.0mA

4.18 4.31 4.13 4.106.0I O =-7.8mA

5.68

5.8 5.63

5.60

V OL

Low Level Output Voltage

2.0V I =

V IH or

V IL I O =20μA 0.00.10.10.1V

4.50.00.10.10.16.00.0

0.10.10.14.5I O =6.0mA

0.170.260.330.406.0I O =7.8mA 0.18

0.260.330.40I I

Input Leakage Current

6.0V I =V CC or GND ±0.1±1±1

μA I OZ

3State Output Off State Current

6.0V I =V IH or V IL V O =V CC or GND ±0.5±5.0μA

I CC

Quiescent Supply Current

6.0

V I =V CC or GND

μA M54/M74HC245/640/643

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AC ELECTRICAL CHARACTERISTICS (C L =50pF,Input t r =t f =6ns)

Symbol

Parameter

Test Conditions

Value

Unit

V CC (V)C L (pF)

T A =25o C 54HC and 74HC -40to 85o C 74HC -55to 125o C

54HC Min.

Typ.Max.Min.

Max.

Min.

Max.t TLH t THL Output Transition Time 2.05025607590ns

4.571219186.06101315t PLH t PHL

Propagation Delay Time

2.050

3390115135ns

4.5121823276.010

2.0150

120150180ns 4.5162430366.014202631t PZL t PZH Output Enable Time

2.050

R L =1K ?

48150190225ns 4.5163038456.0142632382.0150

R L =1K ?63180225270ns 4.5213645546.0

18313846t PLZ t PHZ Output Disable Time

2.050

R L =1K ?

37150190225ns 4.5173038456.0

263238C IN Input Capacitance DIR,G

510

pF C I/OUT Output

Capacitance

An,Bn

pF C PD (*)

Power Dissipation Capacitance HC245HC640/643

3937

pF (*)C PD is defined as the value of the IC’s internal equivalent capac itanc e which is calculated from the operating current con sump tion without load.(Refer to Test Circuit).Average operting current can be obtained by the following equ ation.I CC (opr)=C PD ?V CC ?f IN +I CC /8(per circuit)

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SWITCHING CHARACTERISTICS TEST WAVEFORM

TEST CIRCUIT I CC (Opr.)

C P

D CALCULATION

C P

D is to be calculated with the following

formula by using the measured value of I CC (Opr.)in the test circuit opposite.

C P

D =

I CC (Opr .)f IN x V CC

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Plastic DIP20(0.25)MECHANICAL DATA

DIM.

inch MIN.

TYP.

MAX.

MIN.TYP.

MAX.

a10.2540.010B 1.39

1.65

0.055

0.065

b 0.450.018

b10.25

0.010

D 25.4

1.000E 8.5

0.335e 2.54

0.100e322.86

0.900

F 7.10.280I 3.93

0.155L 3.3

0.130

1.34

0.053

P001J

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Ceramic DIP20MECHANICAL DATA

DIM.

inch MIN.

TYP.

MAX.MIN.

TYP.

MAX.A 250.984B 7.8

0.307

D 3.3

0.130

E 0.5

1.78

0.020

0.070e322.86

0.900

F 2.29 2.790.0900.110

G 0.40.550.0160.022I 1.27 1.52

0.050

0.060L 0.220.31

0.009

0.012M 0.51 1.27

0.020

0.050N14°(min.),15° (max.)P 7.98.130.311

0.320Q

5.71

0.225

P057H

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SO20MECHANICAL DATA

DIM.

mm inch MIN.

TYP.

MAX.MIN.

TYP.

MAX.A 2.650.104

a10.10

0.200.0040.007a2 2.450.096b 0.350.49

0.0130.019b10.230.32

0.009

0.012C 0.50

0.020

c145°(typ.)D 12.6013.000.4960.512E 10.0010.65

0.393

0.419e 1.27

0.050e311.43

0.450

F 7.407.600.2910.299L 0.50 1.270.19

0.050M 0.75

0.029

8°(max.)

P013L

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PLCC20MECHANICAL DATA

DIM.

inch MIN.

TYP.

MAX.MIN.TYP.

MAX.A 9.7810.030.3850.395

B 8.899.040.3500.356D 4.2

4.57

0.165

0.180d1 2.540.100d20.56

0.022

E 7.378.38

0.290

0.330e 1.270.050e3 5.08

0.200F 0.38

0.015

G 0.101

0.004

M 1.270.050M1

1.14

0.045

P027A

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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 Microelectronics products are not authorized for use ascritical components in life support devices or systems without express written approval of SGS-THOMSON Microelectonics.

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