SGS Thomson Microelectronics 74VHCT16245ATTR Datasheet

74VHCT16245A

16-BIT BUS TRANSCEIVER

WITH 3-STATE OUTPUTS (NON INVERTED)

■ HIGH SPEED: t

■ LOW POWER DISSIPATION:

I

=4µA (MAX.) at TA=25°C

CC

■ COMPATIBLEWITH TTL OUTPUTS:

V

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

IH

■ POWER DOWN PROTECTION ON INPUTS

= 4.5 ns (TYP.) at VCC=5V

PD

&OUTPUTS

■ SYMMETRICAL OUTPUT IMPEDANCE:

|I

|=IOL=8mA(MIN)

OH

■ BALANCED PROPAGATION DELAYS:

t

≅ t

PLH

PHL

■ OPERATING VOLTAGE RANGE:

V

(OPR) = 4.5V to 5.5V

CC

■ IMPROVED LATCH-UP IMMUNITY

■ LOW NOISE: V

= 0.9V (MAX.)

OLP

DESCRIPTION

The 74VHCT16 245A is an advanc ed high-speed
CMOS 16-BIT BUS TRANSCEIVER (3-STATE)
fabricated with sub-micron silicon gate and
double-layer metal wiring C

2

MOS technology.
This IC is intended for two-way asynch ronous
communication between data busses; the
direction of data transmission is determined by
DIR input. The enable input G

canbeusedto
disable the device so that the busses are
effectively isolated.
All inputs and outputs are equipped wit h
protection circuits against static discharge, giving
them 2KV ESD immunit y and transient excess
voltage.
All floating bus terminals during High Z State must
be held HIGH or LOW.

TSSOP

ORDER CODES

PACKAGE TUBE T & R

TSSOP 74VHCT16245ATTR

PIN CONNECTION

1/10July 2003

74VCHT16245A

INPUT 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

IEC LOGIC SYMBOLS

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

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DIR A BUS B BUS Yn

74VCHT16245A

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter Value Unit

V

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

1) Output in OFF State

2) Highor Low State

RECOMMENDED OPERATING CONDITIONS

Symbol Parameter Value Unit

V

V
V
V

T

dt/dv

1) Output in OFF State

2) Highor Low State

3) VIN from0.8V to 2V

Supply Voltage

CC

DC Input Voltage (DIR, G)

I

DC BUS I/O Voltage (see note 1)

I/O

DC BUS I/O Voltage (see note 2) -0.5 to VCC+ 0.5

I/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

BUS I/O Voltage (see note 1)

I/O

BUS I/O Voltage (see note 2) 0 to V

I/O

Operating Temperature

op

Input Rise and Fall Time (see note 3) (V

=5.0±0.5V)

CC

-0.5 to +7.0 V

-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
0 to 5.5 V

CC

-55 to 125 °C
0 to 20 ns/V

V

V

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