Philips 74lv245 DATASHEETS

INTEGRATED CIRCUITS

74LV245

Octal bus transceiver (3-State)

Product specification Supersedes data of 1997 Feb 19 IC24 Data Handbook

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1998 Apr 20

Philips Semiconductors Product specification

74L V245Octal bus transceiver (3-State)

FEA TURES

•Wide operating voltage: 1.0 to 5.5 V

•Optimized for low voltage applications: 1.0 to 3.6 V

•Accepts TTL input levels between V

•Typical V

T

amb

•Typical V

T

amb

(output ground bounce) < 0.8 V at V

OLP

= 25°C

(output VOH undershoot) > 2 V at V

OHV

= 25°C

= 2.7 V and V

CC

= 3.3 V,

•Output capability: bus driver

•I

category: MSI

CC

QUICK REFERENCE DATA

GND = 0 V; T

= 25°C; tr = t

amb

SYMBOL

t

PHL/tPLH

C

I

C

I/O

C

PD

Propagation delay An to Bn; Bn to A

Input capacitance 3.5 pF Input/output capacitance 10 pF

Power dissipation capacitance per buffer

NOTE:

1. C

is used to determine the dynamic power dissipation (PD in µW)

PD

= CPD  V

P

D

f

= input frequency in MHz; CL = output load capacitance in pF;

i

= output frequency in MHz; VCC = supply voltage in V;

f

o

 V

 (C

L

2

 fi  (CL  V

CC

2

 fo) = sum of the outputs.

CC

≤ 2.5 ns

f

PARAMETER CONDITIONS TYPICAL UNIT

n

2

 fo) where:

CC

DESCRIPTION

The 74LV245 is a low-voltage Si-gate CMOS device and is pin and function compatible with 74HC/HCT245.

= 3.6 V

CL = 15 pF; VCC = 3.3 V

VCC = 3.3 V VI = GND to VCC, note 1

The 74LV245 is an octal transceiver featuring non-inverting 3-State bus compatible outputs in both send and receive directions. The 74LV245 features an output enable (OE and a send/receive (DIR) input for direction control. OE outputs so that the buses are effectively isolated.

) input for easy cascading

controls the

7.0 ns

40 pF

ORDERING INFORMATION

PACKAGES TEMPERATURE RANGE OUTSIDE NORTH AMERICA NORTH AMERICA PKG. DWG. #

20-Pin Plastic DIL –40°C to +125°C 74LV245 N 74LV245 N SOT146-1 20-Pin Plastic SO –40°C to +125°C 74LV245 D 74LV245 D SOT163-1 20-Pin Plastic SSOP Type II –40°C to +125°C 74LV245 DB 74LV245 DB SOT339-1 20-Pin Plastic TSSOP Type I –40°C to +125°C 74LV245 PW 74LV245PW DH SOT360-1

PIN DESCRIPTION

PIN NUMBER SYMBOL FUNCTION

1 DIR Direction 2, 3, 4, 5,

6, 7, 8, 9 10 GND Ground (0 V) 18, 17, 16, 15,

14, 13, 12, 11 19 OE Output enable input (active LOW) 20 V

A0 to A7Data inputs/outputs

B0 to B7Data inputs/outputs

CC

Positive supply voltage

FUNCTION TABLE

INPUTS INPUTS/OUTPUT

OE DIR A

L L A = B Inputs L H Inputs B = A

H X Z Z

NOTES:

H = HIGH voltage level L = LOW voltage level X = don’t care Z = high impedance OFF-state

n

B

n

1998 Apr 20 853–1931 19258

2

Philips Semiconductors Product specification

74LV245Octal bus transceiver (3-State)

PIN CONFIGURATION

1

DIR

A

0

2 3

A

1

4

A

2

5

A

3

6

A

4

7

A

5

8

A

6

9

A

7

10

GND

LOGIC SYMBOL (IEEE/IEC)

19 1

3

G3 3EN1 3EN2

1

SV00624

2

LOGIC SYMBOL

DIR

20

V

CC

19

OE

18

B

0

17

B

1

16

B

2

15

B

3

14

B

4

13

B

5

B

12

6

B

11

7

182

17

1

OE

19

A

0

2

A

1

3

A

2

4

A

3

5

A

4

6

A

5

7

A

6

8

A

7

9

B

0

18

B

1

17

B

2

16

B

3

15

B

4

14

B

5

13

B

6

12

B

7

11

SV00625

4

5

6

7

8

9

16

15

14

13

12

11

SV00626

1998 Apr 20

3

Philips Semiconductors Product specification

74LV245Octal bus transceiver (3-State)

RECOMMENDED OPERATING CONDITIONS

SYMBOL PARAMETER CONDITIONS MIN TYP. MAX UNIT

V

T

amb

tr, t

NOTE:

1. The LV is guaranteed to function down to V V

CC

ABSOLUTE MAXIMUM RATINGS

In accordance with the Absolute Maximum Rating System (IEC 134). Voltages are referenced to GND (ground = 0V).

SYMBOL

V

I

DC supply voltage See Note 1 1.0 3.3 5.5 V

CC

Input voltage 0 – V

I

Output voltage 0 – V

O

Operating ambient temperature range in free air

Input rise and fall times

f

= 5.5V.

CC

See DC and AC

characteristics

VCC = 1.0V to 2.0V VCC = 2.0V to 2.7V VCC = 2.7V to 3.6V VCC = 3.6V to 5.5V

= 1.0V (input levels GND or VCC); DC characteristics are guaranteed from VCC = 1.2V to

–40 –40

– – – –

1, 2

PARAMETER CONDITIONS RATING UNIT

DC supply voltage –0.5 to +7.0 V

CC

DC input diode current VI < –0.5 or VI > VCC + 0.5V 20 mA

IK

DC output diode current VO < –0.5 or VO > VCC + 0.5V 50 mA

OK

DC output source or sink current

O

– bus driver outputs

–0.5V < VO < VCC + 0.5V

35

CC CC

+85

+125

500 200 100

50

V V

°C

ns/V

mA

I

P

GND

T

TOT

DC VCC or GND current for types with

,

– bus driver outputs 70

CC

Storage temperature range –65 to +150 °C

stg

Power dissipation per package – plastic DIL – plastic mini-pack (SO) – plastic shrink mini-pack (SSOP and TSSOP)

for temperature range: –40 to +125°C above +70°C derate linearly with 12 mW/K above +70°C derate linearly with 8 mW/K above +60°C derate linearly with 5.5 mW/K

750 500 400

mA

mW

NOTES:

1. Stresses beyond those listed may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability .

2. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.

1998 Apr 20

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