Datasheet 74LCXR162245TTR Datasheet (SGS Thomson Microelectronics)

1/10July 2003

■ 5V TOLERANT INPUTS AND OUTPUTS

■ HIGH SPEED:

t

PD

= 4.2 ns (MAX.) at VCC=3V

■ POWER DOWN PROTECTION ON INPUTS

AND OUTPUTS

■ SYMMETRICAL OUTPUT IMPEDANCE:

|I

OH

|=IOL= 12mA (MIN) at VCC=3V

■ PCI BUS LEVELS GUARANTEED AT 12 mA

■ BALANCED PROPAGATION DELAYS:

t

PLH

≅ t

PHL

■ OPERATING VOLTAGE RANGE:

V

CC

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

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

DESCRIPTION

The 74LCXR162245 is a low voltage CMOS 16
BIT BUS TRANSCEIVER (3-STATE) 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 5Vsignalenvironmentfor both inputs
and outputs.
This IC is intended for two-way asynchro nous
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.
All outputs, wich are designed to sink up to 12mA,
include 26

Ω resistors to reduce overshoot and un-

dershoot.
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.

74LCXR162245

LOW VOLTAGE CMOS 16-BIT BUS TRANSCEIVER

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

ORDER CODES

PACKAGE TUBE T & R

TSSOP 74LCXR162245TTR

TSSOP

PIN CONNECTION

74LCXR162245

2/10

INPUT AND OUTPUT EQUIVALENT CIRCUIT

PIN DESCRIPTION

TRUTH TABLE

X :Don‘t Care
Z : High Impedance

IEC L OGIC SYMBOLS

PIN No SYMBOL NAME AND FUNCTION

1 1DIR Directional Control

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

11, 12

1B1 to 1B8 Data Inputs/Outputs

13,14,16,17,

19, 20, 22, 23

2B1 to 2B8 Data Inputs/Outputs

24 2DIR Directional Control
25 2G

Output Enable Input

36,35,33,32,

30, 29, 27, 26

2A1 to 2A8 Data Inputs/Outputs

47,46,44,43,

41, 40, 38, 38

1A1 to 1A8 Data Inputs/Outputs

48 1G

Output Enable Input

4, 10, 15, 21,

28, 34, 39, 45

GND Ground (0V)

7, 18, 31, 42

V

CC

Positive Supply Voltage

INPUTS FUNCTION OUTPUT

G

DIR A BUS B BUS Yn

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

HXZZZ

74LCXR162245

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ABSOLUTE MAXIMUM RATINGS

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

1) I

O

absolute maximum rating must be observed

2) V

O

<GND

RECOMMENDED OPERATING CONDITIONS

1) Truth Table guaranteed: 1.5V to 3.6V

2) V

IN

from0.8V to2Vat VCC=3.0V

Symbol Parameter Value Unit

V

CC

Supply Voltage

-0.5 to +7.0 V

V

I

DC Input Voltage (DIR, G)

-0.5 to +7.0 V

V

I/O

Bus I/O Voltage (OFF State)

-0.5 to +7.0 V

V

I/O

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

V

I

IK

DC Input Diode Current

-50 mA

I

OK

DC Output Diode Current (note 2)

-50 mA

I

O

DC Output Current

± 50 mA

I

CC

DC Supply Current per Supply Pin

± 100 mA

I

GND

DC Ground Current per Supply Pin

± 100 mA

T

stg

Storage Temperature

-65 to +150 °C

T

L

Lead Temperature (10 sec)

300 °C

Symbol Parameter Value Unit

V

CC

Supply Voltage (note 1)

2.0 to 3.6 V

V

I

Input Voltage

0 to 5.5 V

V

O

Output Voltage (OFF State)

0 to 5.5 V

V

O

Output Voltage (High or Low State) 0 to V

CC

V

I

OH,IOL

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

± 12 mA

I

OH,IOL

High or Low Level Output Current (VCC= 2.7V)

± 8mA

T

op

Operating Temperature

-55 to 125 °C

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

74LCXR162245

4/10

DC SPECIFICATIONS

DYNAMIC SWITCHING CHARACTERISTICS

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

Symbol Parameter

Test Condition Value

Unit

V

CC

(V)

-40to85°C -55to125°C

Min. Max. Min. Max.

V

IH

High Level Input
Voltage

2.7to3.6

2.0 2.0 V

V

IL

Low Level Input
Voltage

0.8 0.8 V

V

OH

High Level Output
Voltage

2.7to3.6

IO=-100 µAVCC-0.2 VCC-0.2

V

2.7

I

O

=-8 mA

2.0 2.0

3.0

I

O

=-6 mA

2.4 2.4

I

O

=-12 mA

2.2 2.2

V

OL

Low Level Output
Voltage

2.7to3.6

IO=100 µA

0.2 0.2
V

2.7

I

O

=8 mA

0.6 0.6

3.0

I

O

=6 mA

0.55 0.55

I

O

=12 mA

0.8 0.8

I

I

Input Leakage
Current

2.7to3.6

V

I

= 0 to 5.5V

± 5 ± 5 µA

I

off

Power Off Leakage
Current

0

V

I

or VO=5.5V

10 10 µA

I

OZ

High Impedance
Output Leakage
Current

2.7to3.6

V

I=VIH

or V

IL

VO= 0 to V

CC

± 5 ± 5 µA

I

CC

Quiescent Supply
Current

2.7to3.6

VI=VCCor GND

20 20

µA

V

I

or VO= 3.6 to 5.5V

± 20 ± 20

∆I

CC

ICCincr. per Input

2.7to3.6

VIH=VCC-0.6V

500 500 µA

Symbol Parameter

Test Condition Value

Unit

V

CC

(V)

T

A

=25°C

Min. Typ. Max.

V

OLP

Dynamic Low Level Quiet
Output (note 1)

3.3

C

L

=50pF

V

IL

=0V,VIH= 3.3V

0.35
V

V

OLV

-0.35

74LCXR162245

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AC ELECTRICAL CHARACTERISTICS

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

OSLH

=|t

PLHm-tPLHn

|, t

OSHL

=|t

PHLm-tPHLn

|)

2) Parameter guaranteed by design

CAPACITIVE CHARACTERISTICS

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

CC(opr)=CPDxVCCxfIN+ICC

/16 (per

circuit)

Symbol Parameter

Test Condition Value

Unit

V

CC

(V)

C

L

(pF)

R

L

(Ω)

t

s

= t

r

(ns)

-40 to 85 °C -55 to 125 °C

Min. Max. Min. Max.

t

PLHtPHL

Propagation Delay
Time

2.7
50 500 2.5

1.5 4.5 1.5 4.7
ns

3.0 to 3.6 1.5 4.0 1.5 4.2

t

PZLtPZH

Output Enable Time 2.7

50 500 2.5

1.5 5.8 1.5 6.0
ns

3.0 to 3.6 1.5 5.3 1.5 5.6

t

PLZtPHZ

Output Disable Time 2.7

50 500 2.5

1.5 5.8 1.5 6.0
ns

3.0 to 3.6 1.5 5.4 1.5 5.55

t

OSLH

t

OSHL

Output To Output
Skew Time (note1,

2)

3.0 to 3.6 50 500 2.5 1.0 1.0 ns

Symbol Parameter

Test Condition Value

Unit

V

CC

(V)

T

A

=25°C

Min. Typ. Max.

C

IN

Input Capacitance

3.3

VIN= 0 to V

CC

7pF

C

OUT

Output Capacitance

3.3

VIN= 0 to V

CC

8pF

C

PD

Power Dissipation Capacitance
(note 1)

3.3 fIN= 10MHz
V

IN

= 0 or V

CC

80

pF

74LCXR162245

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TEST CIRCUIT

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

T=ZOUT

of pulse generator (typically 50Ω)

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

TEST SWITCH

t

PLH,tPHL

Open

t

PZL,tPLZ

6V

t

PZH,tPHZ

GND

74LCXR162245

7/10

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

74LCXR162245

8/10

DIM.

mm. inch

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

TSSOP48 MECHANICAL DATA

c

E

b

A2

A

E1

D

1

PIN 1 IDENTIFICATION

A1

L

K

e

7065588C

74LCXR162245

9/10

DIM.

mm. inch

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

Tape & Reel TSSOP48 MECHANICAL DATA

74LCXR162245

10/10

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