Datasheet 74ABT2245D, 74ABT2245PW, 74ABT2245N, 74ABT2245DB Datasheet (Philips)

INTEGRATED CIRCUITS

74ABT2245

Octal transceiver with direction pin with
30Ω series termination resistors (3-State)

Product specification
Supersedes data of 1996 Sep 10

IC23 Data Handbook

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1998 Jan 16

Philips Semiconductors Product specification

Octal transceiver with direction pin
and 30Ω series termination resistors (3-State)

FEA TURES

•Octal bidirectional bus interface

•3-State buffers

•Output capability: +12mA/–32mA

•Latch-up protection exceeds 500mA per Jedec Std 17

•ESD protection exceeds 2000 V per MIL STD 833 Method 3015

and 200 V per Machine Model

•Power-up 3-State

•Live insertion/extraction permitted

•Same as 74ABT245-1

•Outputs include series resistance of 30Ω, making external

termination resistors unnecessary

•Inputs are disabled during 3-State mode

QUICK REFERENCE DATA

SYMBOL PARAMETER

t

PLH

t

PHL

C
C
I

CCZ

IN

I/O

Propagation delay
An to Bn or Bn to An

CL = 50pF; VCC = 5V 3.9 ns

Input capacitance DIR, OE VI = 0V or V
I/O pin capacitance Outputs disabled; VO = 0V or V
Total supply current Outputs disabled; VCC =5.5V 50 µA

DESCRIPTION

The 74ABT2245 high-performance BiCMOS device combines low
static and dynamic power dissipation with high speed.

The 74ABT2245 device is an octal transceiver featuring
non-inverting 3-State bus compatible outputs in both send and
receive directions. The control function implementation minimizes
external timing requirements. The device features an Output Enable
(OE

) input for easy cascading and a Direction (DIR) input for

direction control.
The 74ABT2245 is designed with 30Ω series resistance in both the

High and Low states of the output. This design reduces line noise in
applications such as memory address drivers, clock drivers, and bus
receivers/transmitters.

The 74ABT2245 is the same as the 74ABT245-1. The part number
has been changed to reflect industry standards.

CONDITIONS

T

= 25°C; GND = 0V

amb

CC

CC

74ABT2245

TYPICAL UNIT

4 pF
7 pF

ORDERING INFORMATION

PACKAGES TEMPERATURE RANGE OUTSIDE NORTH AMERICA NORTH AMERICA DWG NUMBER

20-Pin Plastic DIP –40°C to +85°C 74ABT2245 N 74ABT2245 N SOT146-1
20-Pin plastic SO –40°C to +85°C 74ABT2245 D 74ABT2245 D SOT163-1
20-Pin Plastic SSOP Type II –40°C to +85°C 74ABT2245 DB 74ABT2245 DB SOT339-1
20-Pin Plastic TSSOP Type I –40°C to +85°C 74ABT2245 PW 7ABT2245PW DH SOT360-1

PIN CONFIGURATION

1

DIR

2

A0

3

A1

4

A2

5

A3

6

A4

7

A5

8

A6

9

A7

10 11

GND

20
19
18
17
16
15
14
13
12

SA00121

V
OE
B0
B1
B2
B3
B4
B5
B6
B7

CC

PIN DESCRIPTION

PIN NUMBER SYMBOL NAME AND FUNCTION

1 DIR Direction control input

2, 3, 4, 5, 6, 7, 8, 9 A0 – A7 Data inputs/outputs (A side)

18, 17, 16, 15, 14,

13, 12, 11

19 OE

10 GND Ground (0V)
20 V

B0 – B7 Data inputs/outputs (B side)

Output enable input
(active-Low)

CC

Positive supply voltage

1998 Jan 16 853-1761 18865

2

Philips Semiconductors Product specification

Octal transceiver with direction pin
and 30Ω series termination resistors (3-State)

LOGIC SYMBOL

1

DIR

A0

A1

A2

A3

A4

A5

A6

A7

2

3

4

5

6

7

8

9

19

OE

18

B0

17

B1

16

B2

15

B3

14

B4

13

B5

12

B6

11

B7

SA00122

74ABT2245

FUNCTION TABLE

INPUTS INPUTS/OUTPUTS

OE DIR An Bn

L L An = Bn Inputs
L H Inputs Bn = An

H X Z Z

H =High voltage level
L =Low voltage level
X = Don’t care
Z =High impedance ”off” state

SCHEMATIC OF EACH OUTPUT

V

CC

LOGIC SYMBOL IEEE/IEC

19

1

2

3

4

5

6

7

8

9

G3

3 EN1 (BA)

3 EN2 (AB)

1

OUTPUT

SA00237

2

18

17

16

15

14

13

12

11

SA00313

1998 Jan 16

3

Philips Semiconductors Product specification

Octal transceiver with direction pin
and 30Ω series termination resistors (3-State)

ABSOLUTE MAXIMUM RATINGS

SYMBOL

V

V

I

CC

I

IK

V

I

OK

OUT

OUT

T

stg

DC supply voltage –0.5 to +7.0 V
DC input diode current VI < 0 –18 mA
DC input voltage

I

DC output diode current VO < 0 –50 mA
DC output voltage
DC output current output in Low state 128 mA
Storage temperature range –65 to 150 °C

NOTES:

1. Stresses beyond those listed may cause permanent damage to the device. These are stress ratings only and functional operation of the
device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to
absolute-maximum-rated conditions for extended periods may affect device reliability .

2. The performance capability of a high-performance integrated circuit in conjunction with its thermal environment can create junction
temperatures which are detrimental to reliability. The maximum junction temperature of this integrated circuit should not exceed 150°C.

3. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.

PARAMETER CONDITIONS RATING UNIT

3

3

RECOMMENDED OPERATING CONDITIONS

SYMBOL PARAMETER LIMITS UNIT

V

CC

V
V
V
I

OH

I

OL

∆t/∆v Input transition rise or fall rate 0 5 ns/V

T

amb

DC supply voltage 4.5 5.5 V
Input voltage 0 V

I

High-level input voltage 2.0 V

IH

Low-level Input voltage 0.8 V

IL

High-level output current –32 mA
Low-level output current 12 mA

Operating free-air temperature range –40 +85 °C

1, 2

–1.2 to +7.0 V

output in Off or High state –0.5 to +5.5 V

Min Max

74ABT2245

CC

V

1998 Jan 16

4

Philips Semiconductors Product specification

VOLLow-level output voltage

I

g

Quiescent su ly current

Octal transceiver with direction pin
and 30Ω series termination resistors (3-State)

DC ELECTRICAL CHARACTERISTICS

SYMBOL PARAMETER TEST CONDITIONS T

V

V

I

OFF

IPU/I

IIH + I

IIL + I

I

CEX

I

CCH

I

CCL

I

CCZ

∆I

I

Input clamp voltage VCC = 4.5V; IIK = –18mA –0.9 –1.2 –1.2 V

IK

VCC = 4.5V; IOH = –3mA; VI = VIL or V

High-level output voltage VCC = 5.0V; IOH = –3mA; VI = VIL or V

OH

VCC = 4.5V; IOH = –32mA; VI = VIL or V
VCC = 4.5V; IOL = 5mA; VI = VIL or V

p

I

Input leakage
current

Control pins VCC = 5.5V; VI = GND or 5.5V ±0.01 ±1.0 ±1.0 µA

Data pins VCC = 5.5V; VI = GND or 5.5V ±5 ±100 ±100 µA
Power-off leakage current
Power-up/down 3-State

PD

output current
3-State output High current VCC = 5.5V; VO = 2.7V; VI = VIL or V

OZH

3-State output Low current VCC = 5.5V; VO = 0.5V; VI = VIL or V

OZL

3

VCC = 4.5V; IOL = 12mA; VI = VIL or V

VCC = 0.0V; VI or V

O

VCC = 2.1V; VO = 0.5V; VI = GND or VCC;
VOE = Don’t care

Output high leakage current VCC = 5.5V; VO = 5.5V; VI = GND or V

O

Output current

1

VCC = 5.5V; VO = 2.5V –40 –100 –180 –40 –180 mA
VCC = 5.5V; Outputs High, VI = GND or V

Quiescent supply current

VCC = 5.5V; Outputs Low, VI = GND or V

≤ 4.5V

IH

IH

IH

IH

IH

IH

IH

CC

CC

CC

VCC = 5.5V; Outputs 3-State;
VI = GND or V

CC

Outputs enabled, one input at 3.4V , other

Additional supply current per

CC

input pin

2

inputs at V
Outputs 3-State, one data input at 3.4V ,

other inputs at VCC or GND; VCC = 5.5V

or GND; VCC = 5.5V

CC

Outputs 3-State, one enable input at 3.4V ,
other inputs at VCC or GND; VCC = 5.5V

74ABT2245

LIMITS

T

= –40°C

= +25°C

amb

Min Typ Max Min Max

2.5 2.9 2.5 V

3.0 3.4 3.0 V

2.0 2.4 2.0 V

0.32 0.55 0.55 V

0.5 0.8 0.8 V

±5.0 ±100 ±100 µA

±5.0 ±50 ±50 µA

5.0 50 50 µA

–5.0 –50 –50 µA

5.0 50 50 µA

50 250 250 µA
24 30 30 mA

50 250 250 µA

0.5 1.5 1.5 mA

50 250 250 µA

0.5 1.5 1.5 mA

amb

to +85°C

UNIT

NOTES:

1. Not more than one output should be tested at a time, and the duration of the test should not exceed one second.

2. This is the increase in supply current for each input at 3.4V.

3. This parameter is valid for any V
transition time of up to 100µsec is permitted.

1998 Jan 16

between 0V and 2.1V with a transition time of up to 10msec. From VCC = 2.1V to VCC = 5V ± 10%, a

CC

5

Philips Semiconductors Product specification

Octal transceiver with direction pin
and 30Ω series termination resistors (3-State)

AC CHARACTERISTICS

GND = 0V; tR = tF = 2.5ns; CL = 50pF, RL = 500Ω

SYMBOL PARAMETER WAVEFORM

t

PLH

t

PHL

t

PZH

t

PZL

t

PHZ

t

PLZ

AC WAVEFORMS

VM = 1.5V, VIN = GND to 3.0V

An or Bn

Bn or An

OUTPUT

Waveform 1. W aveforms Showing the Input to Output

Propagation delay
An to Bn or Bn to An

Output enable time
to High and Low level

Output disable time
from High and Low Level

INPUT

V

M

t

PLH

V

M

Propagation Delays

1

2

2

V

M

t

PHL

V

M

SA00124

74ABT2245

LIMITS

T

= +25°C

amb

VCC = +5.0V

Min Typ Max Min Max

1.0

1.0

1.3

3.0

1.5

1.0

OUTPUT

OUTPUT

OE
INPUT

2.8

3.9

3.5

5.5

4.0

3.4

V

M

Waveform 2. Waveforms Showing the 3-State Output Enable

T

= –40°C to +85°C

amb

VCC = +5.0V ±0.5V

4.2

5.0

4.6

7.0

5.4

4.6

t

PZL

t

PZH

1.0

1.0

1.3

3.0

1.5

1.0

V

M

V

M

and Disable Times

UNIT

4.7

5.4

5.5

7.8

6.3

5.0

V

M

t

PLZ

t

PHZ

ns

ns

ns

3.5V

V

OL

V

OL

V

OH

V

OH

0V

SA00314

+ 0.3V

– 0.3V

TEST CIRCUIT AND WAVEFORMS

From Output
Under Test

DEFINITIONS

C

1998 Jan 16

C

= 50 pF

L

t

= Load capacitance includes jig and probe capacitance;

L

see AC CHARACTERISTICS for value.

500 Ω

500 Ω

Load Circuit

TEST S1

t

pd

t

PLZ/tPZL

PHZ/tPZH

open

7 V

open

7 V

S1

Open

GND

SA00012

6

Philips Semiconductors Product specification

Octal transceiver with direction pin

74ABT2245

and 30Ω series termination resistors (3-State)

DIP20: plastic dual in-line package; 20 leads (300 mil) SOT146-1

1998 Jan 16

7

Philips Semiconductors Product specification

Octal transceiver with direction pin

74ABT2245

and 30Ω series termination resistors (3-State)

SO20: plastic small outline package; 20 leads; body width 7.5 mm SOT163-1

1998 Jan 16

8

Philips Semiconductors Product specification

Octal transceiver with direction pin

74ABT2245

and 30Ω series termination resistors (3-State)

SSOP20: plastic shrink small outline package; 20 leads; body width 5.3 mm SOT339-1

1998 Jan 16

9

Philips Semiconductors Product specification

Octal transceiver with direction pin

74ABT2245

and 30Ω series termination resistors (3-State)

TSSOP20: plastic thin shrink small outline package; 20 leads; body width 4.4 mm SOT360-1

1998 Jan 16

10

Philips Semiconductors Product specification

Octal transceiver with direction pin
and 30Ω series termination resistors (3-State)

NOTES

74ABT2245

1998 Jan 16

11

Philips Semiconductors Product specification

Octal transceiver with direction pin
and 30Ω series termination resistors (3-State)

Data sheet status

Data sheet
status

Objective
specification

Preliminary
specification

Product
specification

Product
status

Development

Qualification

Production

Definition

This data sheet contains the design target or goal specifications for product development.
Specification may change in any manner without notice.

This data sheet contains preliminary data, and supplementary data will be published at a later date.
Philips Semiconductors reserves the right to make chages at any time without notice in order to
improve design and supply the best possible product.

This data sheet contains final specifications. Philips Semiconductors reserves the right to make
changes at any time without notice in order to improve design and supply the best possible product.

[1]

74ABT2245

[1] Please consult the most recently issued datasheet before initiating or completing a design.

Definitions

Short-form specification — The data in a short-form specification is extracted from a full data sheet with the same type number and title. For

detailed information see the relevant data sheet or data handbook.
Limiting values definition — Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one

or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or
at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended
periods may affect device reliability.

Application information — Applications that are described herein for any of these products are for illustrative purposes only. Philips
Semiconductors make no representation or warranty that such applications will be suitable for the specified use without further testing or
modification.

Disclaimers

Life support — These products are not designed for use in life support appliances, devices or systems where malfunction of these products can

reasonably be expected to result in personal injury . Philips Semiconductors customers using or selling these products for use in such applications
do so at their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application.

Right to make changes — Philips Semiconductors reserves the right to make changes, without notice, in the products, including circuits, standard
cells, and/or software, described or contained herein in order to improve design and/or performance. Philips Semiconductors assumes no
responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright, or mask work right to these
products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless
otherwise specified.

Philips Semiconductors
811 East Arques Avenue
P.O. Box 3409
Sunnyvale, California 94088–3409
Telephone [phone]

 Copyright Philips Electronics North America Corporation 1998

All rights reserved. Printed in U.S.A.

print code Date of release: 05-96
Document order number: 9397-750-03468

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