Datasheet 74LCX16244TTR Datasheet (SGS Thomson Microelectronics)

LOW VOLTAGE CMOS 16-BIT BUS BUFFER (3-STATE)

WITH 5V TOLERANT INPUTS AND OUTPUTS

■ 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 RAN GE:

V

(OPR) = 2.0V to 3.6V (1.5V D ata

CC

Retention)

■ PIN AND FUNCTION COMPATIBLE WITH

74 SERIES 16244

■ LATCH-UP PERFORMANCE EXCEEDS

500mA (JESD 17)

■ ESD PERFORMANCE:

HBM > 2000V (MIL STD 883 method 3015);
MM > 200V

74LCX16244

TSSOP

ORDER CODES

PACKAGE TUBE T & R

TSSOP 74LCX16244TTR

PIN CO NNE CTION

DESCRIPTION

The 74LCX16244 is a low voltage CMOS 16 BIT
BUS BUFFER (NON-INVERTED) fabricated with
sub-micron silicon gate 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 5V signal env ironment for both inputs
and outputs.
Any nG
ERS. Output Enable input (nG

output control governs four BUS BUFF-

) tied together gives
full 16-bit operation.
When nG

is LO W, the outputs are on. When nG is
HIGH, the output are in high impedance state.
This device is designed to be us ed with 3 state
memory address drivers, etc.
It has same speed performance at 3.3V than 5V
AC/ACT family, combined with a lower power
consumption.
All inputs and ou tputs are equipped with protec­tion circuits against static disc harge, giving them
2KV ESD immunity and transient excess vo ltage.

1/10February 2003

74LCX16244

INPUT AND OUTPUT EQUIVALENT CIRCUIT

PIN DESCRIPTION

PIN No SYMBOL NAME AND FUNCTION

11G

2, 3, 5, 6 1Y1 to 1Y4 Data Outputs

8, 9, 11, 12 2Y1 to 2Y4 Data Outputs
13, 14, 16, 17 3Y1 to 3Y4 Data Outputs
19, 20, 22, 23 4Y1 to 4Y4 Data Outputs

24 4G

25 3G
30, 29, 27, 26 4A1 to 4A4 Data Outputs
36, 35, 33, 32 3A1 to 3A4 Data Outputs
41, 40, 38, 37 2A1 to 2A4 Data Outputs
47, 46, 44, 43 1A1 to 1A4 Data Outputs

48 2G
4, 10, 15, 21,

28, 34, 39, 45

7, 18, 31, 42

GND Ground (0V)

V

CC

Output Enable Input

Output Enable Input
Output Enable Input

Output Enable Input

Positive Supply Voltage

TRUTH TABLE

INPUTS OUTPUT

G

LLL
LHH

HXZ

X : Don‘t Care
Z : High Impedance

An Yn

IEC LOGIC SYMBOLS

2/10

74LCX16244

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 tothe 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 to 2Vat VCC=3.0V

2) V

IN

Supply Voltage

CC

DC Input Voltage

I

DC Output Voltage (OFF State)

O

DC Output Voltage (High or Low State) (note 1) -0.5 to VCC+ 0.5

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

74LCX16244

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 CHARA CTERISTICS

Test Condition Value

=25°C

Symbol Parameter

V

CC

(V)

V

OLP

V

OLV

1) Number ofoutputsdefinedas "n".Measured with "n-1"outputsswitching fromHIGH to LOW orLOW 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 C HARACTERISTICS

74LCX16244

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 5.5 1.5 5.5

t

PLZtPHZ

Output Disable Time 2.7

3.0 to 3.6 1.5 5.4 1.5 5.4

t

OSLH

t

OSHL

1) Skew isdefined astheabsolute value ofthe difference between the actual propagation delay for any twooutputs ofthe 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 6.3 1.5 6.3

1.5 5.7 1.5 5.7

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

74LCX16244

TEST CIRCUIT

TEST SWITCH

t

PLH,tPHL

t

PZL,tPLZ

t

PZH,tPHZ

CL= 50 pF or equivalent (includes jig and probe capacitance)
R

=R1=500Ω or equivalent

L

R

T=ZOUT

of pulse generator (typically 50Ω)

Open

6V

GND

WAVEFORM 1 : PROPAGATION DEL AYS (f=1MHz; 50% duty cycle)

6/10

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

74LCX16244

7/10

74LCX16244

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

74LCX16244

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

74LCX16244

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