Datasheet 74LCX16245TTR Datasheet (SGS Thomson Microelectronics)

LOW VOLTAGE CMOS 16-BIT BUS TRANSCEIVER

WITH 5V TOLERANT INPUTS AND OUTPUT (3-STATE)

■ 5V TOLERANT INPUTS AND OUTPUTS

■ HIGH SPEED:

t

= 4.5 ns (MAX.) at VCC=3V

PD

■ POWER DOWN PROTECTION ON INPUTS

AND OUTPUTS

■ SYMMETRICAL OUTPUT IMPEDANCE:

|I

|=IOL= 24mA (MIN) at VCC=3V

OH

■ PCI BUS LEVELS GUARANTEED AT 24 mA

■ BALANCED PROPAGATION DELAYS:

t

≅ t

PLH

PHL

■ OPERATING VOLTAGE RANGE:

V

(OPR) = 2.0V to 3.6V (1.5V Data

CC

Retention)

■ PIN AND FUNCTION COMPATIBLE WITH

74 SERIES 16245

■ LATCH-UP PERFORMANCE EXCEEDS

500mA (JESD 17)

■ ESD PERFORMANCE:

HBM > 2 000V (MIL STD 883 method 3015);
MM > 200V

74LCX16245

TSSOP

ORDER CODES

PACKAGE TUBE T & R

TSSOP 74LCX16245TTR

PIN CONNECTION

DESCRIPTION

The 74LCX16245 is a low voltage CMOS 16 BIT
BUS T RA NS CEIVER (3-STATE) fabricated with
sub-micron silicon gat e and double-layer metal
wiring C

2

MOS technology. It is ideal for low power
and high speed 3.3V applications; it can be
interfaced to 5Vsignalenvironmentfor both inputs
and outputs.
This IC is intended for two-way asynchronous
communication between data buses; the direc tion
of data transm ission is determined by DIR input.
The t wo enable inputs nG

canbeusedtodisable
the device so that the buses are ef fectively isolat­ed.
It has same speed performance at 3. 3V than 5V
AC/ACT family, combined withalower power con­sumption.
All inputs and outputs are equipped with protec­tion circuits against static discharge, giving them
2KV ESD immunity and tr ans ient excess voltage.
All floating bus terminals during High Z State must
be held HIGH or LOW.

1/10July 2003

74LCX16245

INPUT AND OUTPUT EQUIVALENT CIRCUIT

PIN DESCRIPTION

PIN No SYMBOL NAME AND FUNCTION

1 1DIR Directional Control

2, 3, 5, 6, 8, 9,

11, 12

13,14,16,17,

19, 20, 22, 23

24 2DIR Directional Control
25 2G

36,35,33,32,

30, 29, 27, 26

47,46,44,43,

41, 40, 38, 38

48 1G

4, 10, 15, 21,

28, 34, 39, 45

7, 18, 31, 42

1B1 to 1B8 Data Inputs/Outputs

2B1 to 2B8 Data Inputs/Outputs

Output Enable Input

2A1 to 2A8 Data Inputs/Outputs

1A1 to 1A8 Data Inputs/Outputs

Output Enable Input

GND Ground (0V)

V

CC

Positive Supply Voltage

TRUTH TABLE

INPUTS FUNCTION OUTPUT

G

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

HXZZZ

X :Don‘t Care
Z : High Impedance

DIR A BUS B BUS Yn

IEC L OGIC SYMBOLS

2/10

74LCX16245

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter Value Unit

V

V
V
V

I

I

OK

I

I

CC

I

GND

T

T

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

1) I

absolute maximum rating must be observed

O

2) VO<GND

RECOMMENDED OPERATING CONDITIONS

Symbol Parameter Value Unit

V

V

V
V

I

OH,IOL

I

OH,IOL

T

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

1) Truth Table guaranteed: 1.5V to 3.6V
from0.8V to2Vat VCC=3.0V

2) V

IN

Supply Voltage

CC

DC Input Voltage (DIR, G)

I

Bus I/O Voltage (OFF State)

I/O

Bus I/O Voltage (High or Low State) (note 1) -0.5 to VCC+ 0.5

I/O

DC Input Diode Current

IK

DC Output Diode Current (note 2)
DC Output Current

O

DC Supply Current per Supply Pin
DC Ground Current per Supply Pin
Storage Temperature

stg

Lead Temperature (10 sec)

L

Supply Voltage (note 1)

CC

Input Voltage

I

Output Voltage (OFF State)

O

Output Voltage (High or Low State) 0 to V

O

High or Low Level Output Current (VCC= 3.0 to 3.6V)
High or Low Level Output Current (VCC= 2.7V)
Operating Temperature

op

-0.5 to +7.0 V

-0.5 to +7.0 V

-0.5 to +7.0 V

-50 mA

-50 mA

± 50 mA
± 100 mA
± 100 mA

-65 to +150 °C
300 °C

2.0 to 3.6 V
0 to 5.5 V
0 to 5.5 V

CC

± 24 mA
± 12 mA

-55 to 125 °C

V

V

3/10

74LCX16245

DC SPECIFICATIONS

Test Condition Value

Symbol Parameter

V

V

V

V

I

I

OZ

High Level Input

IH

Voltage
Low Level Input

IL

Voltage
High Level Output

OH

Voltage

Low Level Output

OL

Voltage

Input Leakage

I

I

Current
Power Off Leakage

off

Current
High Impedance

Output Leakage
Current

I

CC

∆I

Quiescent Supply
Current

ICCincr. per Input

CC

V

CC

(V)

2.7to3.6

2.7to3.6

2.7

3.0

2.7to3.6

2.7

3.0

2.7to3.6

0

2.7to3.6

2.7to3.6

2.7to3.6

-40to85°C -55to125°C

Min. Max. Min. Max.

2.0 2.0 V

0.8 0.8 V

IO=-100 µAVCC-0.2 VCC-0.2

=-12 mA

I

O

I

=-18 mA

O

=-24 mA

I

O

IO=100 µA

I

=12 mA

O

I

=16 mA

O

=24 mA

I

O

V

= 0 to 5.5V

I

or VO=5.5V

V

I

I=VIH

or V

V
VO= 0 to V

VI=VCCor GND

or VO= 3.6 to 5.5V

V

I

VIH=VCC-0.6V

IL

CC

2.2 2.2

2.4 2.4

2.2 2.2

0.2 0.2

0.4 0.4

0.4 0.4

0.55 0.55
± 5 ± 5 µA

10 10 µA

± 5 ± 5 µA

20 20

± 20 ± 20

500 500 µA

Unit

V

V

µA

DYNAMIC SWITCHING CHARACTERISTICS

Test Condition Value

=25°C

Symbol Parameter

V

CC

(V)

V

OLP

V

OLV

1) Number ofoutputsdefined as"n". Measured with"n-1" outputsswitching fromHIGH to LOWorLOW to HIGH.Theremaining outputis
measured in the LOW state.

Dynamic Low Level Quiet
Output (note 1)

3.3

=50pF

C

L

V

=0V,VIH= 3.3V

IL

4/10

T

A

Min. Typ. Max.

0.8

-0.8

Unit

V

AC ELECTRICAL CHARACTERISTICS

74LCX16245

Test Condition Value

Symbol Parameter

V

CC

(V)

t

PLHtPHL

t

PZLtPZH

Propagation Delay
Time

Output Enable Time 2.7

2.7

3.0 to 3.6 1.5 4.5 1.5 4.5

3.0 to 3.6 1.5 6.5 1.5 6.5

t

PLZtPHZ

Output Disable Time 2.7

3.0 to 3.6 1.5 6.4 1.5 6.4

t

OSLH

t

OSHL

1) Skew is defined as the absolute value of the difference between the actual propagation delay for any two outputs of the same device switch­ing in the same direction, either HIGH or LOW (t

2) Parameter guaranteed by design

Output To Output
Skew Time (note1,

2)

3.0 to 3.6 50 500 2.5 1.0 1.0 ns

OSLH

C

L

(pF)

50 500 2.5

50 500 2.5

50 500 2.5

=|t

PLHm-tPLHn

R

(Ω)

|, t

L

OSHL

t

s

(ns)

= t

=|t

-40 to 85 °C -55 to 125 °C

r

Min. Max. Min. Max.

1.5 5.2 1.5 5.2

1.5 7.2 1.5 7.2

1.5 6.9 1.5 6.9

PHLm-tPHLn

|)

Unit

ns

ns

ns

CAPACITIVE CHARACTERISTICS

Test Condition Value

=25°C

Symbol Parameter

V

CC

(V)

C

C

OUT

C

1) CPDis defined 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 operating current can be obtained by the following equation. I
circuit)

Input Capacitance

IN

Output Capacitance
Power Dissipation Capacitance

PD

(note 1)

3.3

3.3

VIN= 0 to V
VIN= 0 to V

3.3 fIN= 10MHz
V

= 0 or V

IN

CC
CC

CC

T

A

Min. Typ. Max.

7pF
8pF

20

CC(opr)=CPDxVCCxfIN+ICC

Unit

pF

/16 (per

5/10

74LCX16245

TEST CIRCUIT

TEST SWITCH

t

PLH,tPHL

t

PZL,tPLZ

t

PZH,tPHZ

CL= 50 pF or equivalent (includes jig and probe capacitance)
RL=R1=500Ω or equivalent
R

T=ZOUT

of pulse generator (typically 50Ω)

Open

6V

GND

WAVEFORM 1: PROPAG ATION DE LAYS (f=1MHz; 50% duty cycle)

6/10

WAVEFORM 2: OUTPUT ENABLE AND DISABLE TIME (f=1MHz; 50% duty cycle)

74LCX16245

7/10

74LCX16245

TSSOP48 MECHANICAL DATA

mm. inch

DIM.

MIN. TYP MAX. MIN. TYP. MAX.

A 1.2 0.047

A1 0.05 0.15 0.002 0.006

A2 0.9 0.035

b 0.17 0.27 0.0067 0.011

c 0.09 0.20 0.0035 0.0079

D 12.4 12.6 0.488 0.496

E 8.1 BSC 0.318 BSC

E1 6.0 6.2 0.236 0.244

e 0.5 BSC 0.0197 BSC

K0˚ 8˚0˚ 8˚

L 0.50 0.75 0. 020 0.030

A2

A

A1

b

e

D

K

c

E1

L

E

PIN 1 IDENTIFICATION

8/10

1

7065588C

74LCX16245

Tape & Reel TSSOP48 MECHANICAL DATA

mm. inch

DIM.

MIN. TYP MAX. MIN. TYP. MAX.

A 330 12.992
C 12.8 13.2 0.504 0.519
D 20.2 0.795
N 60 2.362

T 30.4 1.197
Ao 8.7 8.9 0.343 0.350
Bo 13.1 13.3 0.516 0.524
Ko 1.5 1.7 0.059 0.067
Po 3.9 4.1 0.153 0.161

P 11.9 12.1 0.468 0.476

9/10

74LCX16245

Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the
consequences of use o f suc h inf ormat ion n or f or an y infr ingeme nt of paten ts or oth er ri gh ts of third part ies whic h may resul t f rom
its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications
mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information
previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or
systems without express written approval of STMicroelectronics.

Australia - Brazil - Canada - China - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco

© The ST logo is a registered trademark of STMicroelectronics

© 2003 STMicroelectronics - Printed in Italy - All Rights Reserved

STMicroelectronics GROUP OF COMPANIES

Singapore - Spain - Sweden - Switzerland - United Kingdom - United States.

© http://www.st.com

10/10