Datasheet 74LCX16541TTR Datasheet (SGS Thomson Microelectronics)

74LCX16541

LOW VOLTAGE CMO S 16-BIT BUS BUFFER (3-STATE)

WITH 5V TOLERANT INPUTS/OUTPUTS (NON INVERTED)

■ 5V TOLERANT INPUTS AND OUTPUTS

■ HIGH SPEED:

t

= 4.1 ns (MAX.) at VCC=5V

PD

■ LOW POWER DISSIPATION:

I

=2µA (MAX.) at TA=25°C

CC

■ HIGH NOISE IMMUNITY:

V

NIH=VNIL

■ POWER DOWN PROTECTION ON INPUTS

= 28% VCC(MIN.)

AND OUPUTS

■ SYMMETRICAL OUTPUT IMPEDANCE:

|I

|=IOL=24mA(MIN)

OH

■ BALANCED PROPAGATION DELAYS:

t

≅ t

PLH

PHL

■ OPERATING VOLTAGE RANGE:

V

(OPR) = 2V to 3.6V (1.5V Data Retention)

CC

■ PIN AND FUNCTION COMPATIBLE WITH

74 SERIES 16541

■ IMPROVED LATCH-UP IMMUNITY

■ ESD P ERFORMANCE :

HBM>2000V(MIL ST D 8 83 method 3015);
MM>200V

ORDER CODES

PACKAGE TUBE T & R

TSSOP 74LCX16541TTR

PIN CO NNECTION

TSSOP

DESCRIPTION

The 74LCX16541 is an advanced high-speed
CMOS 16-BIT BUS BUFFER (3-STATE) fabricat­ed with sub-micron silicon gate and double-layer
metal wiring C

2

MOS tecnology.
This is com pos ed of two 8-bit sections with
separate output-enable signals. For either 8-bit
buffers section, the 3 STATE control gate
operates as a two input AND such that if either
nG1

and nG2 are high, all out puts are in the high
impedence state. This device is designed to be
usedwith 3 state memoryaddressdriveres,etc.
It hase same speed performance at 3.3V than 5V
AC/ACT family, combined with a lower power con­sumption.
All inputs and outputs are equipped with protec­tion circuits against s tatic discharge, giving them
2KV ESD immunity and transient excess vo ltage.

1/9February 2003

74LCX16541

INPUT AND OUT PUT EQUIVALENT CIRCUIT

PIN DESCRIPTION

PIN No SYMBOL NAME AND FUNCTION

1, 48 1G1

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

11, 12

13,14,16,17,

19, 20, 22, 23

24, 25 2G1

36,35, 33,32,

30, 29, 27, 26

47,46, 44,43,

41, 40, 38, 37
4, 10, 15, 21,

28, 34, 39, 45

7, 18, 31, 42 V

,1G2 Output Enable Inputs

1Y1 to 1Y8 Data Outputs

2Y1 to 2Y8 Data Outputs

,2G2 Output Enable Inputs

2A1 to 2A8 Data Outputs

1A1 to 1A8 Data Outputs

GND Ground (0V)

CC

Positive Supply Voltage

TRUTH TABLE

INPUTS OUTPUT

G1

HXXZ
XHXZ

LLHH
LLLL

X : Don’t Care
Z : High Impedance

G2 An Yn

IEC LOGIC SYMBOLS

2/9

74LCX16541

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter Value Unit

V

V
V
V

I

I

OK

I

or I

I

CC

T

stg

T

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

1) Io absolute maximum rating must be observed

2)Vo < GND

RECOMMENDED OPERATING CONDITIONS

Symbol Parameter Value Unit

V

V
V
V

T

I

OH,IOL

I

OH,IOL

dt/dv

Supply Voltage

CC

DC Input Voltage

I

DC Output Voltage

O

DC Output Voltage (High or Low State) (note 1)

O

DC Input Diode Current

IK

DC Output Diode Current (note 2)
DC Output Current

O

DC VCCor Ground Current

GND

Storage Temperature
Lead Temperature (10 sec)

L

Supply Voltage (note 1)

CC

Input Voltage

I

Output Voltage (OFF State)

O

Output Voltage (High or Low State)

O

Operating Temperature

op

High or Low Level Output Current (Vcc = 3.0 to 3.6V)
High or Low Level Output Current (Vcc = 2.7V)
Input Rise and Fall Time (note 2) 0 to 10

-0.5 to +7.0 V

-0.5 to +7.0 V

-0.5 to +7.0 V

-0.5 to Vcc+0.5 V

−50 mA

− 50 mA
+ 50 mA

± 100 mA

-65 to +150 °C
300 °C

2 to 3.6 V
0 to 5.5 V
0 to 5.5 V

0 to Vcc V

-55 to 125 °C

± 24 mA
± 12 mA

ns/V

1) Truth Table guaranteed: 1.5V to 3.6V
from0.8V to 2V at VCC=3.0V

2) V

IN

3/9

74LCX16541

DC SPECIFICATIONS

Test Condition Value

Symbol Parameter

V

CC

(V)

V

V

High Level Input

IH

Voltage
Low Level Input

V

IL

Voltage
High Level Output

OH

Voltage

2.7 to 3.6

2.7 to 3.6

2.7

3.0

3.0

V

Low Level Output

OL

Voltage

2.7 to 3.6

3.0

I

OZ

High Impedance
Output Leakage

2.7 to 3.6 VI= 0 to 5.5V ± 5 ± 5 µA

Current

I

Input Leakage

I

I

Current
Power Off Leakage

I

off

Current
Quiescent Supply

CC

Current

2.7 to 3.6 VI= 0 to 5.5V ± 5 ± 5 µA

0V

2.7 to 3.6 VI=VCCor GND 20 20 µA

AC ELECTRICAL C HARACTERISTICS (C

-40 to 85 °C -55 to 125 °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

=-12 mA

I

O

=-24 mA

I

O

IO=100 µA

I

=12 mA

O

=24 mA

I

O

or VO=5.5V 10 10 µA

I

=50pF,RL= 500 Ω, Input tr=tf= 2.5ns)

L

2.2 2.2

2.4 2.4

2.2 2.2

0.2 0.2

0.4 0.4

0.55 0.55

Unit

V

V2.7

Symbol Parameter

t

PLHtPHL

Propagation Delay
Time
AtoY

t

PZLtPZH

t

PLZtPHZ

Output Enable Time 2.7 1.5 5.8 1.5 5.8

Output Disable Time 2.7 1.5 6.2 1.5 6.2

Test Condition Value

V

CC

(V)

C

(pF)

L

-40 to 85°C -55 to 125°C

Min. Max. Min. Max.

2.7 1.5 4.7 1.5 4.7

3.0 to 3.6 1.5 4.1 1.5 4.1

3.0 to 3.6 1.5 4.6 1.5 4.6

3.0 to 3.6 1.5 5.8 1.5 5.8

Unit

ns

ns

ns

4/9

74LCX16541

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

Input Capacitance

IN

Output Capacitance
Power Dissipation Capacitance

PD

(note 1) Output enabled
Power Dissipation Capacitance

(note 1) Output disabled

3.3

3.3

VI=0VorV
VI=0VorV

2.5 fIN= 10MHz
V

3.3

2.5 f

3.3

=0VorV

I

= 10MHz

IN

V

=0VorV

I

CC
CC

CC

CC

TEST CIRCUIT

T

A

Min. Typ. Max.

4pF
10 pF
45 pF

50

3pF

4

CC(opr)=CPDxVCCxfIN+ICC

Unit

/16

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
2V

CC

GND

5/9

74LCX16541

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

WAVEFORM 2: OUTPUT ENABLE AND D ISABLE TIME (f=1MHz; 50% duty cycle; V

V

X=VOL

+0.3V)

Y=VOH

-03V,

6/9

74LCX16541

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

1

7065588C

7/9

74LCX16541

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

8/9

74LCX16541

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.

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