SGS Thomson Microelectronics 74LVXC4245TTR, 74LVXC4245MTR, 74LVXC4245M Datasheet

74LVXC4245

OCTAL DUAL SUPPLY BUS TRANSCEIVER

■ HIGH SPEED:

t

= 6.5ns (MAX.) at

PD

V

= 5.0V, V

CCA

■ LOW POWER DISSIPATION:

I

= I

CCA

■ LOW NOISE: V

V

CCA

■ SYMMETRICAL OUTPUT IMPEDANCE:

|I

| = IOL = 24mA (MIN)

OH

■ BALANCED PROPAGATION DELAYS:

t

≅ t

PLH

■ OPERATING VOLTAGE RANGE:

V

CCA

V

CCB

= 5µA(MAX.) at TA=25°C

CCB

=5.0V V

PHL

(OPR) = 4.5V to 5.5V (1.2V Data Retention) (OPR) = 2.7V to 5.5V (1.2V Data Retention)

= 5.0V

CCB

=0.3V (TYP.) at

OLP

=3.3V

CCB

PIN AND FUNCTION COMPATIBLE WITH 74 SERIES C4245

■ IMPROVED LATCH-UP IMMUNITY

DESCRIPTION

The 74LVXC4245 is a dual supply 8 bit configurable low voltage CMOS OCTAL BUS TRANSCEIVER fabricated with sub-micron silicon gate and double-layer metal wiring C

2

MOS technology. Designed for use as an interface between a 5V bus and a 3.3V to 5V bus in a mixed 5V/3.3V supply systems, it achieves high speed operation while m aintaining t he CM OS l ow p ower dissipation.

TSSOPSOP

ORDER CODES

PACKAGE TUBE T & R

SOP 74LVXC4245M 74LVXC4245MTR

TSSOP 74LVXC4245TTR

This IC is intended for two-way asynchronous communication between data buses and the direction of data transmission is determined by DIR input. The enable input G

can be used to disable the device so that the buses are effectively isolated. The A-port interfaces with the 5V bus, the B-port with the 3.3V to 5V bus. All inputs are equipped with protection circuits against static discharge, giving them 2KV ESD immunity and transient excess voltage.

PIN CONNECTION AND IEC LOGIC SYMBOLS

1/11July 2001

74LVXC4245

INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION

PIN No SYMBOL NAME AND FUNCTION

2 DIR Directional Control

3, 4, 5, 6, 7,

8, 9, 10

21, 20, 19, 18, 17, 16,

15, 14

22 G

11, 12, 13 GND Ground (0V)

23 NC Not Connected

1V

24 V

TRUTH TABLE

A1 to A8 Data Inputs/Outputs

B1 to B8 Data Inputs/Outputs

CCA CCB

Output Enable Input

Positive Supply Voltage Positive Supply Voltage

INPUTS FUNCTION

OUTPUT

G

DIR A BUS B BUS

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

HXZZZ

X : Don’t Care Z : High Impedance

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter Value Unit

V

CCA

V

CCB

V

I/OA

V

I/OB

I

OK

I

OA

I

OB

I

CCA

I

CCB

P

T

Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied

Supply Voltage Supply Voltage DC Input Voltage -0.5 to V

I

DC I/O Voltage -0.5 to V DC I/O Voltage -0.5 to V DC Input Diode Current

IK

DC Output Diode Current DC Output Current DC Output Current DC VCC or Ground Current DC VCC or Ground Current Power Dissipation

d

Storage Temperature

stg

Lead Temperature (10 sec)

L

-0.5 to +7.0 V

-0.5 to +7.0 V + 0.5

CCA

+ 0.5

CCA

+ 0.5

CCB

± 20 mA ± 50 mA ± 50 mA

± 50 mA ± 200 mA ± 100 mA

180 mW

-65 to +150 °C

300 °C

V V V

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74LVXC4245

RECOMMENDED OPERATING CONDITIONS

Symbol Parameter Value Unit

V

CCA

V

CCB

V

I/OA

V

I/OB

T

dt/dv Input Rise and Fall Time (note 2) 0 to 10 ns/V

1) VIN from 30 % to 70% of V

2) V

CCA

Supply Voltage (note 1) Supply Voltage (note 1) Input Voltage 0 to V

I

I/O Voltage 0 to V I/O Voltage 0 to V Operating Temperature

op

= 4.5 to 5.5V; V

CC

= 2.7 to 3.6V;

CCB

4.5 to 5.5 V

2.7 to 5.5 V

CCA CCA CCB

-40 to 85 °C

V V V

DC SPECIFICATIONS FOR V

Symbol Parameter

V

I

High Level Input

IHA

Voltage

Low Level Input

V

ILA

Voltage

High Level

OHA

Output Voltage Low Level Output

OLA

Voltage

I

Input Leakage

IA

Current High Impedance

OZA

Output Leakage Current

I

CCtAF

Quiescent Supply

CCtA

Current

Quiescent V Supply Current

as B Port Floats

∆I

Maximum

CCtA

Quiescent Supply Current / Input (An, DIR, G

CCA

)

V

CCA

(V)

4.5 2.7 2.0 2.0 2.0

5.5 5.5 2.0 2.0 2.0

4.5 2.7 0.8 0.8 0.8

5.5 5.5 0.8 0.8 0.8

4.5 3.0

5.5 3.6

5.5 3.6 VIA = V

5.5 Open VIA = V

5.5 5.5 V

CCA

Test Condition Value

T

= 25 °C

V

CCB

(V)

IO=-100 µA

I

=-24 mA

O

IO=100 µA

=24 mA

I

O

V

= VCC or GND

I

or V

IHA

VIB = V

V

I/OA

IHB

= V

or V

CCA

ILA ILB

or

A

Min. Typ. Max. Min. Max. Min. Max.

4.4 4.5 4.4 4.4

3.86 3.76 3.76 0 0.1 0.1 0.1

0.36 0.44 0.44

± 0.1 ± 1 ± 1 µA ± 0.5 ± 5 ± 5 µA

GND

CCA

or

55050µA

GND

V

IB

= V

CCB

or

GND

55050µA

GND G

V

CCA

= DIR =

CCA

or

VIB = Open

IA

V

= V

IB

= V

CCA

- 2.1V

CCB

or

1.35 1.5 1.5 mA

GND

-40 to 85 °C -55 to 125°C

Unit

V4.5 3.6 2.0 2.0 2.0

V4.5 3.6 0.8 0.8 0.8

V

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74LVXC4245

DC SPECIFICATIONS FOR V

Symbol Parameter

V

I

High Level Input

IHB

Voltage

Low Level Input

V

ILB

Voltage

High Level

OHB

Output Voltage

Low Level Output

OLB

Voltage

I

Input Leakage

IB

Current High Impedance

OZB

Output Leakage Current

I

∆I

Quiescent Supply

CCtB

Current

Maximum

CCtB

Quiescent Supply Current / Input

V

CCA

(V)

4.5 2.7 2.0 2.0 2.0

4.5 5.5 3.85 3.85 3.85

4.5 2.7 0.8 0.8 0.8

4.5 5.5 1.65 1.65 1.65

4.5 3.0

4.5 2.7

4.5 4.5

4.5 3.0

4.5 2.7

4.5 4.5

5.5 5.5

5.5 5.5 VIA = V

5.5 3.6 VIA = V

CCB

Test Condition Value

T

= 25 °C

V

CCB

(V)

IO=-100 µA

I

=-12 mA

O

I

=-24 mA

O

I

=-12 mA

O

I

=-24 mA

O

I

=-24 mA

O

IO=100 µA

I

O

I

O

I

O

I

O

= V

V

I

V

I/Ob

=24 mA =12 mA =24 mA =24 mA

or GND

CCA

or V

IHA

= V

CCb

ILA

or

A

Min. Typ. Max. Min. Max. Min. Max.

2.9 3.0 2.9 2.9

2.56 2.85 2.46 2.46

2.35 2.65 2.25 2.25

2.3 2.5 2.2 2.2

2.1 2.3 2.0 2.0

3.86 4.25 3.76 3.76

0.0 0.1 0.1 0.1

0.21 0.36 0.44 0.44

0.11 0.36 0.44 0.44

0.22 0.42 0.50 0.50

0.18 0.36 0.44 0.44

± 0.1 ± 1 ± 1 µA ± 0.5 ± 5 ± 5 µA

GND

CCA

or

55050µA

GND

V

IB

= V

CCB

or

GND

CCA

or

0.35 0.5 0.5 mA

GND

V

IB

= V

CCB

- 0.6V

-40 to 85 °C -55 to 125°C

Unit

V4.5 3.6 2.0 2.0 2.0

V4.5 3.6 0.8 0.8 0.8

V

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