Philips 74LVC2245APW, 74LVC2245ADB, 74LVC2245AD Datasheet

INTEGRATED CIRCUITS

DATA SH EET

74LVC2245A

Octal transceiver with direction pin;
30 Ω series termination resistors;
5 V input/output tolerant; 3-state

Product specification
Supersedes data of 1999 Mar 23
File under Integrated Circuits, IC24

1999 Jun 15

Philips Semiconductors Product specification

Octal transceiver with direction pin; 30 Ω series
termination resistors; 5 V input/output tolerant; 3-state

FEATURES

• 5 V tolerant inputs/outputs for interfacing with 5 V logic

• Wide supply voltage range of 1.2 to 3.6 V

• CMOS low power consumption

• Direct interface with TTL levels

• Integrated 30 Ω termination resistors

DESCRIPTION

The 74LVC2245A is a high-performance, low-power,
low-voltage, Si-gate CMOS device, superior to most
advanced CMOS compatible TTL families.

Inputs can be driven from either 3.3 or 5 V devices.
In 3-state operation, outputs can handle 5 V. These
features allow the use of these devices as translators in a
mixed 3.3 V/5 V environment.

The 74LVC2245A is an octal transceiver featuring
non-inverting 3-state bus compatible outputs in both send
and receive directions. The ‘245’ features an output enable

OE) input for easy cascading and a send/receive (DIR)

(
input for direction control OE controls the outputs so that
the buses are effectively isolated.

The 74LVC2245A is designed with 30 Ω series termination
resistors in both HIGH and LOW output stages to reduce
line noise.

74LVC2245A

FUNCTION TABLE

See note 1.

INPUT INPUT/OUTPUT

OE DIR A

L L A = B inputs
L H inputs B = A

HX Z Z

Note

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

ORDERING INFORMATION

OUTSIDE NORTH

AMERICA

74LVC2245AD 74LVC2245AD −40 to +85 °C 20 SO plastic SOT163-1
74LVC2245ADB 74LVC2245ADB 20 SSOP plastic SOT339-1
74LVC2245APW 74LVC2245APW DH 20 TSSOP plastic SOT360-1

NORTH AMERICA

TEMPERATURE

RANGE

n

PACKAGE

PINS PACKAGE MATERIAL CODE

B

n

1999 Jun 15 2

Philips Semiconductors Product specification

Octal transceiver with direction pin; 30 Ω series

74LVC2245A

termination resistors; 5 V input/output tolerant; 3-state

QUICK REFERENCE DATA

GND = 0 V; T

SYMBOL PARAMETER CONDITIONS TYPICAL UNIT

t

PHL/tPLH

C

I

C

PD

Note

1. C

is used to determine the dynamic power dissipation (PDin µW).

PD

PD=CPD× V
fi= input frequency in MHz;
fo= output frequency in MHz;
CL= output load capacitance in pF;
VCC= supply voltage in V;
Σ(CL× V

PINNING

=25°C; tr=tf≤2.5 ns.

amb

propagation delay Anto Bn; Bnto A

n

CL= 50 pF; VCC= 3.3 V 3.9 ns
input capacitance 5.0 pF
power dissipation capacitance per buffer VI= GND to VCC; note 1 27 pF

2

× fi+ Σ(CL× V

CC

2

× fo) = sum of the outputs.

CC

2

× fo) where:

CC

PIN SYMBOL DESCRIPTION

1 DIR direction control
2, 3, 4, 5, 6, 7, 8, 9 A

0

to A

7

data inputs/outputs
10 GND ground (0 V)
18, 17, 16, 15, 14, 13, 12, 11 B
19
20 V

0

to B

7

data inputs/outputs

OE output enable input (active LOW)

CC

DC supply voltage

1999 Jun 15 3

Philips Semiconductors Product specification

Octal transceiver with direction pin; 30 Ω series
termination resistors; 5 V input/output tolerant; 3-state

handbook, halfpage

handbook, halfpage

DIR

1

A

2

0

A

3

1

A

4

2

A

5
A
A
A
A

GND

3
4
5
6
7

2245

6

7

8

9

10

MNA363

Fig.1 Pin configuration.

19

G3
3EN1 (BA)

1

3EN2 (AB)

1

2

4
5
6
7
8

2

MNA365

V

20

CC

19

OE
B

18

0

B

17

1

B

16

2

B

15

3

B

14

4

B

13

5

B

12

6

B

11

7

18

173
16
15
14
13
12
119

handbook, halfpage

DIR

1

A

2

A

3

A

4

A

5

A

6

A

7

A

8

A

9

74LVC2245A

OE

19

0

B

0

18

1

B

1

17

2

B

2

16

3

B

3

15

4

B

4

14

5

B

5

13

6

B

6

12

7

B

7

11

MNA364

Fig.3 IEC logic symbol.

1999 Jun 15 4

Fig.2 Logic symbol.

Philips Semiconductors Product specification

Octal transceiver with direction pin; 30 Ω series

74LVC2245A

termination resistors; 5 V input/output tolerant; 3-state

RECOMMENDED OPERATING CONDITIONS

SYMBOL PARAMETER CONDITIONS

V

CC

DC supply voltage (for max. speed
performance)

DC supply voltage (for low-voltage
applications)

V

I

V

O

DC input voltage range 0 5.5 V
DC output voltage range; output HIGH or

LOW state
DC output voltage range; 3-state 0 5.5 V

T

amb

operating ambient temperature range see DC and AC characteristics per

device

t

r,tf

input rise and fall times VCC= 1.2 to 2.7 V 0 20 ns/V

V

= 2.7 to 3.6 V 0 10

CC

LIMITING VALUES

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

LIMITS

UNIT

MIN. MAX.

2.7 3.6 V

1.2 3.6 V

0VCCV

−40 +85 °C

SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT

V

CC

I

IK

V

I

I

OK

V

O

DC supply voltage −0.5 +6.5 V
DC input diode current VI<0 −−50 mA
DC input voltage note 1 −0.5 +5.5 V
DC output diode current VO>VCC or VO<0 −±50 mA
DC output voltage; output HIGH

note 1 −0.5 VCC+ 0.5 V

or LOW
DC output voltage; output 3-state note 1 −0.5 +6.5 V

I

O

I

GND

T
P

stg
tot

DC output diode current VO= 0 to V

, I

DC VCC or GND current −±100 mA

CC

CC

−±50 mA

storage temperature range −65 +150 °C
power dissipation per package

plastic mini-pack (SO) above +70 °C derate linearly with 8 mW/K − 500 mW
plastic shrink mini-pack (SSOP

and TSSOP)

above +60 °C derate linearly with

5.5 mW/K

− 500 mW

Note

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

1999 Jun 15 5