Fairchild 74ALVC16245 service manual

74ALVC16245
Low Voltage 16-Bit Bidirectional Transceiver

with 3.6V Tolerant Inputs and Outputs

74ALVC16245 Low Voltage 16-Bit Bidirecti onal Transceiver with 3.6V Tol e rant Inputs and Outputs

October 2001
Revised May 2005

General Description

The ALVC16245 contains sixteen non-inverting bidirec­tional buffers with 3-STATE outputs and is intended for bus
oriented applications. The device is byte control led. Each
byte has separate 3-STATE control inputs which can be
shorted together for full 16-bit operation. T he T/R
determine the direction of data flow through the device.
The OE

inputs disable both the A and B ports by pla cing

them in a high impedance state.
The 74ALVC16245 is designed for l ow voltage (1.65V to

3.6V) V
The 74ALVC16245 is fabricated w ith an advanc ed CMOS

technology to achieve high speed operation while maintain­ing low CMOS power dissipation.

applications with I/O compatibility up to 3.6V.

CC

inputs

Features

■ 1.65V–3.6V V

■ 3.6V tolerant inputs and outputs

■ t

PD

3.0 ns max for 3.0V to 3.6V V

3.5 ns max for 2.3V to 2.7V V

6.0 ns max for 1.65V to 1.95V V

■ Power-down high impedance inputs and outputs

■ Supports live insertion/withdrawal (Note 1)

■ Uses patented noise/EMI reductio n circui tr y

■ Latchup conforms to JEDEC JED78

■ ESD performance:

Human body model
Machine model !200V

■ Also packaged in plastic Fine-Pitch Ball Grid Array

(FBGA)

Note 1: To ensure the high-impedance state during power up or power

should be tied to VCC through a pull-up r esistor; the min imum

down, OE
value of the resistor is dete rmined by the current -sourci ng capabilit y of the

driver.

supply operation

CC

Ordering Code:

Order Number Package Number Package Description

74ALVC16245G
(Note 2)(Note 3)

74ALVC16245MTD
(Note 3)

Note 2: Ordering code “G” indicates Trays.
Note 3: Devices also available in Tape and Reel. Specify by appending the suffix let te r “X” to the ordering code.

BGA54A 54-Ball Fine-Pitch Ball Grid Array (FBGA), JEDEC MO-205, 5.5mm Wide

MTD48 48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide

!

2000V

CC
CC

CC

Logic Symbol

© 2005 Fairchild Semiconductor Corporation DS500678 www.fairchildsemi.com

Connection Diagrams

Pin Descriptions

74ALVC16245

Pin Assignment of TSSOP

Pin Assignment for FBGA

(Top Thru View)

Pin Names Description

OE
T/R
A

0–A15

B

0–B15

n

n

Output Enable Input (Active LOW)
Transmit/Receive Input
Side A Inputs or 3-STATE Outputs
Side B Inputs or 3-STATE Outputs

NC No Connect

FBGA Pin Assignments

123456

A B
B B
C B
D B
E B
F B
G B
H B14B

J B

NC T/R1OE1NC A

0

B1NC NC A

2

B3V

4
6

8
10
12B11VCCVCCA11A12

15

CCVCCA3

B5GND GND A
B7GND GND A
B9GND GND A9A

NC NC A

13

NC T/R2OE2NC A

Truth Tables

Inputs

OE

T/R

1

1

L L Bus B0–B7 Data to Bus A0–A
L H Bus A0–A7 Data to Bus B0–B

H X HIGH Z State on A0–A7, B0–B

Inputs

OE

T/R

2

2

L L Bus B8–B15 Data to Bus A8–A
L H Bus A8–A15 Data to Bus B8–B

H X HIGH Z State on A8–A15, B8–B

H HIGH Voltage Level

LOW Voltage Level

L

Immate rial (HIG H or LOW, inputs and I/ O’s may not float)

X
Z

High Impedance

Outputs

Outputs

A

1

A
A

5

A

7

13A14

7
7

7

15
15

15

0
2
4
6
8

10

15

Logic Diagram

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Absolute Maximum Ratings(Note 4) Recommended Operating

Supply Voltage (VCC)
DC Input Voltage (V
Output Voltage (V
DC Input Diode Current (I

 0V

V

I

DC Output Diode Current (I

 0V

V

O

)

I

) (Note 5)

O

)

IK

OK

DC Output Source/Sink Current

(I

)

OH/IOL

or GND Current per

DC V

CC

Supply Pin (I

or GND)

CC

Storage Temperature Range (T



0.5V to 4.6V



0.5V to 4.6V



0.5V to VCC 0.5V

Conditions

Power Supply

Operating 1.65V to 3.6V

Input Voltage 0V to V



50 mA

)



50 mA

r

50 mA

r

100 mA

)

65q

STG

C to 150qC

Output Voltage (VO)0V to V
Free Air Operating Temperature (TA)
Minimum Input Edge Rate (

0.8V to 2.0V, VCC 3.0V 10 ns/V

V

IN

Note 4: The Absolute Maxi mum Ratings are thos e values beyond which
the safety of the d evice cannot b e guaranteed . The device sh ould not be
operated at these lim its. The parametric values defin ed in the Electrical
Characteristics ta bles are not gu aranteed at the Absolute M aximum Rat­ings. The “Recommended Operating Conditions” table will define the condi­tions for actual device operation.

Absolute Maximum Rating must be observed.

Note 5: I

O

Note 6: Floating or unused control inputs mus t be held HIGH or LOW.

(Note 6)

't/'

V)

DC Electrical Characteristics

V

Symbol Parameter Conditions

V

IH

V

IL

V

OH

V

OL

I

I

I

OZ

I

CC

'

I

HIGH Level Input Voltage 1.65 - 1.95 0.65 x V

LOW Level Input Voltage 1.65 - 1.95 0.35 x V

HIGH Level Output Voltage IOH 100 PA 1.65 - 3.6 VCC - 0.2

LOW Level Output Voltage IOL 100 PA 1.65 - 3.6 0.2

Input Leakage Current 0 d VI d 3.6V 3.6
3-STATE Output Leakage 0 d VO d 3.6V 3.6
Quiescent Supply Current VI VCC or GND, IO 0 3.6 40
Increase in ICC per Input VIH VCC  0.6V 3 - 3.6 750

CC

IOH 4 mA 1.65 1.2
I

6 mA 2.3 2.0

OH

12 mA 2.3 1.7

I

OH

IOH 24 mA 3.0 2

I

4 mA 1.65 0.45

OL

6 mA 2.3 0.4

I

OL

IOL 12 mA 2.3 0.7

IOL 24 mA 3.0 0.55

CC

(V)

2.7 - 3.6 2.0

2.7 - 3.6 0.8

2.7 2.2

3.0 2.4

2.7 0.4

Min Max Units

CC

40q

r

5.0

r

10

C to 85qC

CC

P
P
P
P

74ALVC16245

CC
CC

V2.3 - 2.7 1.7

V2.3 - 2.7 0.7

V

V

A
A
A
A

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