Datasheet 74VHCT16244ATTR Datasheet (SGS Thomson Microelectronics)

WITH 3-STATE OUTPUTS (NON INVERTED)

■ HIGH SPEED:

t

= 5.4 ns (TYP.) at VCC=5V

PD

■ LOW POWER DISSIPATION:

I

=4µA (MAX.) at TA=25°C

CC

■ COMPATIBLE WITHTTL OUTPUTS:

V

=2V (MIN.) VIL= 0.8 (MAX.)

IH

■ POWER DOWN PROTECTION ON INPUTS

■ SYMMETRICAL OUTPUT IMPEDANCE:

|I

|=IOL=8mA(MIN)

OH

■ BALANCED PROPAGATION DELAYS:

t

≅ t

PLH

PHL

■ OPERATING VOLTA GE RANGE:

V

(OPR) = 4.5V to 5.5V

CC

■ PIN AND FUNCTION COMPATIBLE WITH

74 SERIES 16244

■ IMPROVED LATCH-UP IMMUNITY

■ LOW NOISE: V

= 0.9V (MAX.)

OLP

74VHCT16244A

16-BIT BUS BUFFER

TSSOP

ORDER CODES

PACKAGE TUBE T & R

TSSOP 74VHCT16244ATTR

PIN CONNECTION

DESCRIPTION

The 74VHCT16244A is an advanced high-speed
CMOS 16-BIT BUS BUFFER (3-STATE)
fabricated with sub-micron silicon gate and
double-layer metal wiring C
Any nG

output con trol governs four BUS

BUFFERS. Output Enable inputs (nG

2

MOS tecnology.

)tied
together give full 16 bit operation.
When nG
nG

is LOW, the outputs are enabled. When

is HIGH, the output are in high impedance
state.
The device is designed to be used with 3-state
memory address drivers, et c.
Power down protection is provided on all inputs
and 0 t o 7V can be accepted on inputs with no
regard to t he supply voltage. This device can be
usedto interface 5V to 3V.
All inputs and outpu ts are equipped with protec­tion circuits against static discharge, giving them
2KV ESD immunity and transient excess vo ltage.

1/9February 2003

74VHCT16244A

INPUT 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‘tCare
Z : High Impedance

An Yn

IEC L OGIC SYMBOLS

2/9

74VHCT16244A

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter Value Unit

V

V

V

I

I

OK

I

or I

I

CC

T

T

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

RECOMMENDED OPERATING CONDITIONS

Symbol Parameter Value Unit

V

V

V

T

dt/dv Input Rise and Fall Time (note 1) (Vcc= 5.0±0.5V)

1) VINfrom0.8V to 2.0V

Supply Voltage

CC

DC Input Voltage

I

DC Output Voltage -0.5 to VCC+ 0.5

O

DC Input Diode Current

IK

DC Output Diode Current
DC Output Current

O

DC VCCor Ground Current

GND

Storage Temperature

stg

Lead Temperature (10 sec)

L

Supply Voltage

CC

Input Voltage

I

Output Voltage 0 to V

O

Operating Temperature

op

-0.5 to +7.0 V

-0.5 to +7.0 V

-20 mA

± 20 mA
± 25 mA
± 75 mA

-65 to +150 °C
300 °C

4.5 to 5.5 V
0 to 5.5 V

CC

-55 to 125 °C
0 to 20 ns/V

V

V

3/9

74VHCT16244A

DC SPECIFICATIONS

Symbol Parameter

V

V

V

I

High Level Input

IH

Voltage

V

Low Level Input

IL

Voltage
High Level Output

OH

Voltage
Low Level Output

OL

Voltage
High Impedance

I

OZ

Output Leakage
Current

Input Leakage

I

I

Current
Quiescent Supply

CC

Current

Test Condition Value

= 25°C

T

V

CC

(V)

4.5to

5.5

A

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

222V

4.5to

5.5

4.5

4.5

4.5

4.5

5.5

0to

5.5

5.5

IO=-50 µA

=-8 mA

I

O

IO=50 µA

=8 mA

I

O

I=VIH

or V

IL

V

VO=VCCor GND

V

= 5.5V or GND

I

V

I=VCC

or GND

4.4 4.5 4.4 4.4

3.94 3.8 3.7

0.0 0.1 0.1 0.1

±0.25 ± 2.5 ± 2.5 µA

-40 to 85°C -55 to 125°C

Unit

0.8 0.8 0.8 V

V

0.36 0.44 0.55

V

± 0.1 ± 1 ± 1 µA

44040µA

AC ELECTRICAL CHARACTERISTICS (Input t

r=tf

=3ns)

Test Condition Value

Symbol Parameter

t
t

t
t

PHZ

t
t

PZH

(*) Voltagerangeis5.0V ± 0.5V

Propagation Delay

PLH

Time

PHL

Output Disable

PLZ

Time
Output Enable

PZL

Time

T

(*)

(V)

C

(pF)

L

V

CC

A

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

5.0 15 5.4 8.5 1.0 9.5 1.0 10.0

5.0 50 7 9.5 1.0 10.5 1.0 11.0

5.0 15

5.0 50 8.2 11.4 1.0 13.0 1.0 13.0

RL = 1KΩ

7.7 10.4 1.0 12.0 1.0 12.0

5.0 50 RL = 1KΩ 8.8 11.4 1.0 13.0 1.0 13.0 ns

-40 to 85°C -55 to 125°C

Unit

ns

ns

= 25°C

CAPACITIVE CHARACTERISTICS

Test Condition Value

= 25°C

Symbol Parameter

V

CC

(V)

C

C

C

Input Capacitance

IN

Output

OUT

Capacitance
Power Dissipation

PD

Capacitance

5.0

= 10MHz

f

IN

T

A

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

410 10 10pF
6pF

21 pF

(note 1)

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
Latch)

-40 to 85°C -55 to 125°C

CC(opr)=CPDxVCCxfIN+ICC

Unit

/16 (per

4/9

74VHCT16244A

DYNAMIC SWITCHING CHARACTERISTICS

Test Condition Value

= 25°C

Symbol Parameter

V
V

Dynamic Low

OLP

Voltage Quiet

OLV

Output (note 1, 2)

V

(V)

5.0

CC

T

A

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

0.6 0.9

-0.9 -0.6

Dynamic High

V

IHD

Voltage Input

5.0 3.5 V

C

L

=50pF

(note 1, 3)
Dynamic Low

V

ILD

Voltage Input

5.0 1.5 V

(note 1, 3)

1) Worst case package.

2) Max number of outputs defined as (n). Data inputs are driven 0V to 5.0V, (n-1) outputs switching and one output at GND.

3) Max number of data inputs (n) switching. (n-1) switching 0V to 5.0V. Inputs under test switching: 5.0V to threshold (V
), f=1MHz.

(V

IHD

TEST CIRCUIT

-40 to 85°C -55 to 125°C

ILD

Unit

V

), 0V to threshold

TEST SWITCH

t

PLH,tPHL

t

PZL,tPLZ

t

PZH,tPHZ

CL= 15/50 pF or equivalent (includes jig and probe capacitance)

=R1=1KΩ or equivalent

R

L

R

T=ZOUT

of pulse generator (typically 50Ω)

Open

V

CC

GND

5/9

74VHCT16244A

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

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

6/9

74VHCT16244A

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

74VHCT16244A

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

74VHCT16244A

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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