Datasheet 74f2245 DATASHEETS (Philips)

INTEGRATED CIRCUITS

74F2245

Octal transceiver with 30 equivalent output termination (3-State)

Product specification 1996 May 10 IC15 Data Handbook

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Philips Semiconductors Product specification

Octal transceiver with 30 equivalent output termination (3-State)

FEA TURES

•Octal bidirectional bus interface

•30 Ohm output termination for driving DRAM

•Outputs are placed in high impedance state during power-off

conditions

•SSOP Type II package

DESCRIPTION

The 74F2245 is an octal transceiver featuring non-inverting 3-State bus compatible outputs in both transmit and receive directions. The device features an Output Enable (OE Transmit/Receive (T/R

) input for direction control. The 3-State outputs, B0-B7, have been designed to prevent output bus loading if the power is removed from the device.

The 30 Ohm series termination on the outputs reduces over/undershoot making them ideal for driving DRAM.

TYPE TYPICAL PROPAGATION DELAY TYPICAL SUPPLY CURRENT (TOTAL)

74F2245 4.0ns 70mA

) input for easy cascading and

PIN CONFIGURATION

1

T/R

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

SF00198

74F2245

V

CC

OE B0 B1 B2 B3 B4 B5 B6

B7

ORDERING INFORMATION

DESCRIPTION

20-Pin Plastic DIP N74F2245N SOT146-1

20-Pin Plastic SOL N74F2245D SOT163-1

20-Pin Plastic SSOP N74F2245DB SOT339-1

COMMERCIAL RANGE

VCC = 5V ±10%, T

= 0°C to +70°C

amb

INPUT AND OUTPUT LOADING AND FAN-OUT TABLE

PINS DESCRIPTION 74F (U.L.) HIGH/LOW LOAD VALUE HIGH/LOW

A0-A7, B0-B7 Data inputs 3.5/1.0 70µA/0.6mA

OE Output Enable input (active Low) 1.0/2.0 20µA/1.2mA

T/R Transmit/Receive input 1.0/2.0 20µA/1.2mA A0-A7 A port outputs 150/8 3.0mA/5mA* B0-B7 B port outputs 150/8 3.0mA/5mA*

NOTE: One (1.0) FAST unit load is defined as: 20µA in the High state and 0.6mA in the Low state. * 12mA with reduced noise margin

DRAWING NUMBER

1996 May 10 853-1833 16802

2

Philips Semiconductors Product specification

OUTPUTS

Octal transceiver with 30 equivalent output termination (3-State)

LOGIC SYMBOL

234

A0 A1 A2 A3 A4 A5

19

1

V

= Pin 20

CC

GND = Pin 10

OE T/R

B0

18

LOGIC DIAGRAM

B2 B3 B4 B5

B1

16 15 14 13

17

567

89

A6 A7

B6 B7

12 11

SF00199

A0 A1 A2 A3 A4 A5 A6 A7

23456789

IEC/IEEE SYMBOL

19

1

2 3 4 5 6 7 8 9

G3 3EN1 (BA) 3EN1 (AB)

∇ 1

2 ∇

74F2245

18 17 16 15 14 13 12 11

SF00200

19

OE

1

T/R

VCC = Pin 20 GND = Pin 10

FUNCTION TABLE

INPUTS

OE T/R

L L Bus B data to Bus A L H Bus A data to Bus B

H X Z

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

18

B0

17

B1

16

B2

15

B3

14

B4

13

B5

12

B6

B7

SF00201

11

1996 May 10

3

Philips Semiconductors Product specification

I

Current applied to output in Low output state

SYMBOL

PARAMETER

UNIT

IOHHigh-level output current

IOLLow-level output current

Octal transceiver with 30 equivalent output termination (3-State)

ABSOLUTE MAXIMUM RATINGS

(Operation beyond the limits set forth in this table may impair the useful life of the device. Unless otherwise noted these limits are over the operating free-air temperature range.)

SYMBOL

V V I

IN

V

OUT

T T

CC IN

OUT

amb stg

Supply voltage –0.5 to +7.0 V Input voltage –0.5 to +7.0 V Input current –30 to +5 mA Voltage applied to output in High output state –0.5 to +5.5 V

pp

Operating free-air temperature range 0 to +70 °C Storage temperature range –65 to +150 °C

p

RECOMMENDED OPERATING CONDITIONS

V

CC

V

IH

V

IL

I

IK

T

amb

* 12 mA with reduced noise margin

Supply voltage 4.5 5.0 5.5 V High-level input voltage 2.0 V Low-level input voltage 0.8 V Input clamp current –18 mA

p

Operating free-air temperature range 0 +70 °C

PARAMETER RATING UNIT

p

A0-A7 –3 mA B0-B7 –3* mA A0-A7 5* mA B0-B7 5* mA

A0-A7 24 mA B0-B7 24 mA

74F2245

LIMITS

MIN NOM MAX

1996 May 10

4

Philips Semiconductors Product specification

2

SYMBOL

PARAMETER

TEST CONDITIONS

2

UNIT

A0-A7, B0-B7

I

3mA

VOHHigh-level output voltage

V

MAX

A0-A7, B0-B7

I

12mA

A0-A7, B0-B7

VOLLow-level output voltage

V

MAX

A0-A7, B0-B7

I

12mA

I

IOSShort-circuit output current

3

V

MAX

Octal transceiver with 30 equivalent output termination (3-State)

DC ELECTRICAL CHARACTERISTICS

(Over recommended operating free-air temperature range unless otherwise noted.)

LIMITS

MIN TYP1MAX

= –

VCC = MIN,

p

V

=

IL

= MIN

IH

OH

,

= –

OH

±10% V

±5% V

±10% V

±5% V

IOL = 5mA ±10% V

V

IK

I

IH

I

IL

IIH+I

IIL+I

I

CC

VCC = MIN,

p

V

=

IL

= MIN

IH

Input clamp voltage VCC = MIN, II = I Input current at maximum

input voltage

OE, T/R VCC = 5.5V, VI = 7.0V 100 µA

A0-A7, B0-B7 VCC = 5.5V, VI = 5.5V 1 mA High-level input current OE, T/R only VCC = MAX, VI = 2.7V 20 µA Low-level input current OE, T/R only VCC = MAX, VI = 0.5V –1.2 mA Off-state output current

OZH

High level voltage applied Off-state output current

OZL

Low level voltage applied

Supply current (total)

p

A0-A7

B0-B7

I

CCH

I

CCL

I

CCZ

VCC = MAX, VO = 2.7V 70 µA

VCC = MAX, VO = 0.5V –600 µA

=

CC

VCC = MAX

IOL = 5mA ±5% V

,

=

OL

IK

±10% V

±5% V

NOTES:

1 For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions for the applicable type. 2 All typical values are at V 3 Not more than one output should be shorted at a time. For testing I

CC

= 5V, T

techniques are preferable in order to minimize internal heating and more accurately reflect operational values. Otherwise, prolonged shorting

amb

= 25°C.

, the use of high-speed test apparatus and/or sample-and-hold

OS

of a High output may raise the chip temperature well above normal and thereby cause invalid readings in other parameter tests. In any sequence of parameter tests, I

tests should be performed last.

OS

2.4 V

CC

2.7 3.4 V

CC

2.0 V

CC

2.0 V

CC

–60 –150 mA –60 –150 mA

74F2245

0.42 0.50 V

0.55 0.67 V

0.55 0.67

–0.73 –1.2 V

60 87 mA 70 100 mA 75 110 mA

AC ELECTRICAL CHARACTERISTICS

SYMBOL PARAMETER

t

PLH

t

PHL

t

PZH

t

PZL

t

PHZ

t

PLZ

1996 May 10

Propagation delay An to Bn, Bn to An

Output Enable time to High or Low level

Output Disable time from High or Low level

TEST

CONDITION

Waveform 1 Waveform 2

Waveform 3 Waveform 2

Waveform 3

LIMITS

VCC = +5.0V

T

= +25°C

amb

C

= 50pF, RL = 500Ω

L

VCC = +5.0V ± 10%

T

amb

C

= 50pF, RL = 500Ω

L

MIN TYP MAX MIN MAX

2.5

3.5

2.5

1.5

3.5

4.0

4.5

5.5

5.0

3.5

7.0

8.0

8.5

7.0

6.5

2.5

2.0

3.5

2.0

1.0

5

= 0°C to +70°C

8.5

8.0

9.5

7.5

7.0

UNIT

ns

Philips Semiconductors Product specification

Octal transceiver with 30 equivalent output termination (3-State)

AC WAVEFORMS

For all waveforms, VM = 1.5V.

OE

An, Bn

Bn, An

Waveform 1. Propagation Delay for Non-Inverting Output

OE

An, Bn

V

M

t

PLH

V

M

t

PHL

V

M

V

M

SF00202

An, Bn

Waveform 3. 3-State Output Enable Time to Low Level and

Output Disable Time from Low Level

V

M

t

PZH

V

M

t

PHZ

V

M

VOH–0.3V

0V

74F2245

V

M

t

PZL

V

M

t

PLZ

V

M

VOL+0.3V

SF00204

SF00203

Waveform 2. 3-State Output Enable Time to High Level and

Output Disable Time from High Level

TEST CIRCUIT AND WAVEFORMS

V

CC

R

PULSE

GENERATOR

V

IN

R

T

D.U.T.

V

OUT

Test Circuit for Open Collector Outputs

SWITCH POSITION

TEST SWITCH

t t

PLZ PZL

closed closed

All other open

DEFINITIONS:

R

= Load resistor;

L

see AC electrical characteristics for value.

= Load capacitance includes jig and probe capacitance;

C

L

see AC electrical characteristics for value.

R

= Termination resistance should be equal to Z

T

pulse generators.

L

R

C

L

of

OUT

7.0V NEGATIVE

PULSE

POSITIVE PULSE

family

74F

90%

10%

amplitude

t

w

V

M

10%

)

V

90%

M

t

THL (tf

t

TLH (tr

)

t

TLH (tr

t

THL (tf

t

w

Input Pulse Definition

INPUT PULSE REQUIREMENTS

V

rep. rate

M

3.0V

1.5V

1MHz 500ns

10%

)

90%

t

w

V

M

V

M

90%

10%

t

TLH

t

THL

2.5ns 2.5ns

AMP (V)

0V

AMP (V)

0V

SF00128

1996 May 10

6

Philips Semiconductors Product specification

Octal transceiver with 30 equivalent output

74F2245

termination (3-State)

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

1996 May 10

7

Philips Semiconductors Product specification

Octal transceiver with 30 equivalent output

74F2245

termination (3-State)

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

1996 May 10

8

Philips Semiconductors Product specification

Octal transceiver with 30 equivalent output

74F2245

termination (3-State)

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

1996 May 10

9

Philips Semiconductors Product specification

Octal transceiver with 30 equivalent output termination (3-State)

74F2245

DEFINITIONS

Data Sheet Identification Product Status Definition

Objective Specification

Preliminary Specification

Product Specification

Formative or in Design

Preproduction Product

Full Production

Philips Semiconductors and Philips Electronics North America Corporation reserve 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. Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification.

LIFE SUPPORT APPLICA TIONS Philips Semiconductors and Philips Electronics North America Corporation Products are not designed for use in life support appliances, devices, or systems where malfunction of a Philips Semiconductors and Philips Electronics North America Corporation Product can reasonably be expected

to result in a personal injury. Philips Semiconductors and Philips Electronics North America Corporation customers using or selling Philips Semiconductors and Philips Electronics North America Corporation Products for use in such applications do so at their own risk and agree to fully indemnify Philips Semiconductors and Philips Electronics North America Corporation for any damages resulting from such improper use or sale.

Philips Semiconductors 811 East Arques Avenue P.O. Box 3409 Sunnyvale, California 94088–3409 Telephone 800-234-7381

This data sheet contains the design target or goal specifications for product development. Specifications 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 changes 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.

Philips Semiconductors and Philips Electronics North America Corporation

register eligible circuits under the Semiconductor Chip Protection Act.

 Copyright Philips Electronics North America Corporation 1996

(print code) Date of release: July 1994 Document order number: 9397-750-05199