Datasheet 74LVT2952D, 74LVT2952PW, 74LVT2952DB Datasheet (Philips)

INTEGRATED CIRCUITS

74LVT2952

3.3V LVT octal registered transceiver
(3-State)

Product specification
Supersedes data of 1994 Sep 27
IC23 Data Handbook

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1998 Feb 19

Philips Semiconductors Product specification

74L VT29523.3V Octal registered transceiver (3-State)

FEA TURES

•8-bit registered transceiver

•Independent registers for A and B buses

•Output capability: +64mA/-32mA

•TTL input and output switching levels

•Input and output interface capability to systems at 5V supply

•Bus-hold data inputs eliminate the need for external pull-up

resistors to hold unused inputs

•Live insertion/extraction permitted

•No bus current loading when output is tied to 5V bus

•Power-up reset

•Power-up 3-State

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

•ESD protection exceeds 2000V per MIL STD 883 Method 3015

and 200V per Machine Model

QUICK REFERENCE DATA

SYMBOL PARAMETER

t

PLH

t

PHL

C
C
I

CCZ

IN

I/O

Propagation delay
CPBA to An or
CPAB to Bn

Input capacitance VI = 0V or 3.0V 4 pF
I/O pin capacitance Outputs disabled; V
Total supply current Outputs disabled; VCC = 3.6V 0.13 mA

DESCRIPTION

The LVT2952 is a high-performance BiCMOS product designed for
V

operation at 3.3V .

CC

This device combines low static and dynamic power dissipation with
high speed and high output drive.

The 74LVT2952 device is an 8-bit registered transceiver. Two 8-bit
back-to-back registers store data flowing in both directions between
two bidirectional buses.

Data applied to the inputs is entered and stored on the rising edge of
the Clock (CPXX) provided that the Clock Enable (CEXX
The data is then present at the 3-State output buffers, but is only
accessible when the Output Enable (OEXX
A inputs to B outputs is the same as for B inputs to A outputs.

CONDITIONS

T

= 25°C; GND = 0V

amb

CL = 50pF; VCC = 3.3V

= 0V or 3.0V 8 pF

I/O

) is Low. Data flow from

TYPICAL UNIT

3.1

3.8

) is Low.

ns

ORDERING INFORMATION

PACKAGES TEMPERATURE RANGE OUTSIDE NORTH AMERICA NORTH AMERICA DWG NUMBER

24-Pin Plastic SOL –40°C to +85°C 74LVT2952 D 74LVT2952 D SOT137-1
24-Pin Plastic SSOP Type II –40°C to +85°C 74LVT2952 DB 74LVT2952 DB SOT340-1
24-Pin Plastic TSSOP Type I –40°C to +85°C 74LVT2952 PW 7LVT2952PW DH SOT355-1

PIN CONFIGURATION

1

B7

2

B6

3

B5

4

B4

5

B3

6

B2

7

B1

8

B0

9

OEAB

10 15

CPAB

11 14CEAB
12 13GND

SV00036

24

V

CC

23

A7

22

A6

21

A5

20

A4

19

A3

18

A2

17

A1

16

A0
OEBA
CPBA
CEBA

PIN DESCRIPTION

PIN

NUMBER

10, 14 CPAB / CPBA

11, 13 CEAB / CEBA

16, 17, 18,
19, 20, 21,

22, 23

8, 7, 6, 5,

4, 3, 2, 1

9, 15 OEAB / OEBA Output enable inputs

12 GND Ground (0V)
24 V

SYMBOL NAME AND FUNCTION

Clock input A to B /
Clock input B to A

Clock enable input A to B /
Clock enable input B to A

A0 – A7 Data inputs/outputs (A side)

B0 – B7 Data outputs/outputs (B side)

CC

Positive supply voltage

1998 Feb 19 853-1765 18987

2

Philips Semiconductors Product specification

INTERNAL

OPERATING

INTERNAL

An or Bn

OPERATING

74LVT29523.3V Octal registered transceiver (3-State)

LOGIC SYMBOL

16 17 18 19 20 21 22 23

10
11
14
13

LOGIC DIAGRAM

A0 A1 A2 A3 A4 A5 A6 A7
CPAB
CEAB
CPBA
CEBA

B0 B1 B2 B3 B4 B5 B6 B7

87654321

CEAB

CPAB
OEAB

A0

OEBA
OEAB

11

10

9

16

SV00037

LOGIC SYMBOL (IEEE/IEC)

15
13

14

9
11
10

15

9

CE

Q

D

CP

16

17
18
19
20
21
22
23

DETAIL A

EN3 (BA)

G1

1C5

EN4 (AB)

G2

2C6

3
6D

1
1

SV00038

5D

4

8

7
6
5
4
3
2
1

17

A1

18

A2

19

A3

20

A4

21

A5

22

A6

23

A7

13

CEBA

14

CPBA

15

OEBA

FUNCTION TABLE for Register An or Bn

INPUTS

An or Bn CPXX CEXX

X X H NC Hold data
L

H

↑
↑

H = High voltage level
L =Low voltage level
↑ =Low-to-High transition
X = Don’t care
XX= AB or BA
NC=No change

INTERNAL OPERATING

Q

L
L

L

H

Load data

MODE

CE

Q

D

CP

DETAIL A X 7

FUNCTION TABLE for Output Enable

INPUTS

OEXX

H X Z Disable outputs
L

L

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

INTERNAL An or Bn OPERATING

Q

L

H

8

B0

7

B1

6

B2

5

B3

4

B4

3

B5

2

B6

1

B7

SV00039

OUTPUTS

L

H

MODE

Enable outputs

1998 Feb 19

3

Philips Semiconductors Product specification

I

DC output current

mA

SYMBOL

PARAMETER

UNIT

I

mA

74LVT29523.3V Octal registered transceiver (3-State)

ABSOLUTE MAXIMUM RATINGS

SYMBOL

V

CC

I

IK

V

I

I

OK

V

OUT

OUT

T

stg

DC supply voltage –0.5 to +4.6 V
DC input diode current VI < 0 –50 mA
DC input voltage
DC output diode current VO < 0 –50 mA
DC output voltage

p

Storage temperature range –65 to 150 °C

PARAMETER CONDITIONS RATING UNIT

3

3

1, 2

–0.5 to +7.0 V

Output in Off or High state –0.5 to +7.0 V

Output in High state –64

Output in Low state 128

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 negative voltage ratings may be exceeded if the input and output clamp current ratings are observed.

RECOMMENDED OPERATING CONDITIONS

LIMITS

MIN MAX

V

CC

V

V

V

I

OH

OL

∆t/∆v Input transition rise or fall rate; Outputs enabled 10 ns/V

T

amb

DC supply voltage 2.7 3.6 V
Input voltage 0 5.5 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 32
Low-level output current; current duty cycle ≤ 50%, f ≥ 1kHz 64

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

1998 Feb 19

4

Philips Semiconductors Product specification

Control pins

6

74LVT29523.3V Octal registered transceiver (3-State)

DC ELECTRICAL CHARACTERISTICS

LIMITS

SYMBOL PARAMETER TEST CONDITIONS Temp = -40°C to +85°C UNIT

1

MAX

0.13 0.55 V
±0.1 ±1.0

1 10

0.1 1.0

±1 ±100 µA

0.1 0.2 mA

µA

V

Input clamp voltage VCC = 2.7V; IIK = –18mA –0.9 –1.2 V

IK

VCC = 2.7 to 3.6V; IOH = –100µA VCC–0.2 VCC–0.1

V

High-level output voltage VCC = 2.7V; IOH = –8mA 2.4 2.5 V

OH

VCC = 3.0V; IOH = –32mA 2.0 2.2
VCC = 2.7V; IOL = 100µA 0.1 0.2
VCC = 2.7V; IOL = 24mA 0.3 0.5

V

Low-level output voltage VCC = 3.0V; IOL = 16mA 0.25 0.4 V

OL

VCC = 3.0V; IOL = 32mA 0.3 0.5
VCC = 3.0V; IOL = 64mA 0.4 0.55

V

Power-up output low

RST

voltage

I

Input leakage current

I

5

VCC = 3.6V; IO = 1mA; VI = GND or V
VCC = 3.6V; VI = VCC or GND

VCC = 0 or 3.6V; VI = 5.5V

CC

p

VCC = 3.6V; VI = 5.5V 1 20 µA
VCC = 3.6V; VI = V

CC

I/O Data pins

4

VCC = 3.6V; VI = 0 –1 -5.0

I

OFF

Output off current VCC = 0V; VI or VO = 0 to 4.5V 1 ±100 µA

VCC = 3V; VI = 0.8V 75 150

I

HOLD

Bus Hold current A inputs

VCC = 3V; VI = 2.0V –75 –150
VCC = 0V to 3.6V; VCC = 3.6V ±500

I

I

PU/PD

I

CCH

I

CCL

I

CCZ

∆I

Current into an output in the

EX

High state when VO > V
Power up/down 3-State

output current

3

VO = 5.5V; VCC = 3.0V 60 125 µA

CC

VCC ≤ 1.2V; VO = 0.5V to VCC; VI = GND or VCC;
OE/OE = Don’t care

VCC = 3.6V; Outputs High, VI = GND or V

Quiescent supply current VCC = 3.6V; Outputs Low, VI = GND or V

VCC = 3.6V; Outputs Disabled; VI = GND or V

Additional supply current

CC

per input pin

2

VCC = 3V to 3.6V; One input at V
Other inputs at VCC or GND

CC

– 0.6V ,

IO = 0 0.13 0.19

CC,

IO = 0 3 12 mA

CC,

IO = 0 0.13 0.19

CC,

NOTES:

1. All typical values are at V

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

3. This parameter is valid for any V
a transition time of 100µsec is permitted. This parameter is valid for T

4. Unused pins at V

5. For valid test results, data must not be loaded into the flip-flops (or latches) after applying power.

CC

CC

or GND.

= 3.3V and T

between 0V and 1.3V with a transition time of up to 10msec. From V

CC

amb

= 25°C.

= 0.6V.

CC

= 25°C only.

amb

6. This is the bus hold overdrive current required to force the input to the opposite logic state.

MIN TYP

= 1.3V to VCC = 3.3V ± 0.3V

CC

1998 Feb 19

5

Philips Semiconductors Product specification

74LVT29523.3V Octal registered transceiver (3-State)

AC CHARACTERISTICS

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

SYMBOL PARAMETER WAVEFORM VCC = 3.3V ± 0.3V VCC = 2.7V UNIT

f

MAX

t

PLH

t

PHL

t

PZH

t

PZL

t

PHZ

t

PLZ

Maximum clock frequency 1 150 200 MHz
Propagation delay

CPBA to An, CPAB to Bn
Output enable time

OEBA to An, OEAB to Bn
Output disable time

OEBA to An, OEAB to Bn

NOTE:

1. All typical values are at V

= 3.3V and T

CC

amb

AC SETUP REQUIREMENTS

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

SYMBOL PARAMETER WAVEFORM VCC = 3.3V ± 0.3V VCC = 2.7V UNIT

ts(H)
ts(L)

tn(H)

tn(L)
ts(H)

ts(L)

tn(H)

tn(L)

tW(H)

tW(L)

Setup time
An to CPAB or Bn to CPBA

Hold time
An to CPAB ro Bn to CPBA

Setup time
CEAB to CPAB or CEBA to CPBA

Hold time
CEAB to CPAB or CEBA to CPBA

CPAB or CPBA pulse width
High or Low

= –40°C to +85°C.

amb

= 25°C.

= –40°C to +85°C.

amb

LIMITS

3.1

3.8

3.4

3.6

3.7

3.4

1

MAX MAX

6.1

6.0

5.6

6.5

6.3

5.1

7.1

6.9

6.7

8.0

6.9

5.3

ns

ns

ns

MIN TYP

1

3
4

3
4

1.3

1.8

1.0

1.2

1.0

1.6

LIMITS

1
1

–0.5
–0.5

0.3

–0.3

0.3
0

1
1

1

MIN

2.8

3.0

0.7

2.6

0.8

2.7

0.7

2.6

3.3

3.3

ns

ns

ns

ns

ns

MIN TYP

2

2

2

2

1

2.5

2.5

1.5

2.5

0.9

2.4

1.5

2.5

3.3

3.3

AC WAVEFORMS

VM = 1.5V, VIN = GND to 2.7V

1/f

MAX

2.7V

CPBA or

CPAB

An or Bn

Waveform 1. Propagation Delay, Clock Input to Output, Clock

Pulse Width, and Maximum Clock Frequency

1998 Feb 19

1.5V

tw(H) tw(L)

t

PHL

1.5V

1.5V 1.5V

t

PLH

1.5V

0V

V

V

SV00040

OH

OL

An, Bn
CEAB

,

1.5V

1.5V 1.5V 1.5V

CEBA

ts(H) th(H) ts(L) th(L)

CPAB,

CPBA

1.5V

NOTE: The shaded areas indicate when the input is permitted

to change for predictable output performance.

Waveform 2. Data Setup and Hold Times

6

2.7V

0V

2.7V

1.5V

0V

SV00131

Philips Semiconductors Product specification

74LVT29523.3V Octal registered transceiver (3-State)

2.7V

OEAB,
OEBA

An, Bn

1.5V 1.5V

t

PZH

1.5V

t

PHZ

0V

0V

SV00132

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

Output Disable Time from High Level

TEST CIRCUIT AND WAVEFORMS

V

CC

PULSE

GENERATOR

V

IN

D.U.T.

R

T

V

OUT

R

L

C

L

R

L

Test Circuit for 3-State Outputs

SWITCH POSITION

TEST SWITCH

t

PLH/tPHL

t

PLZ/tPZL

t

PHZ/tPZH

Open

6V

GND

6.0V

GND

Open

2.7V

OEAB,
OEBA

An, Bn

1.5V 1.5V

t

PZL

1.5V

t

PLZ

0V

3V

SV00133

Waveform 4. 3-State Output Enable Time to Low Level and

Output Disable Time from Low Level

90%

NEGATIVE
PULSE

POSITIVE
PULSE

10%

t

W

V

M

10% 10%

t

(tF)

THL

(tR)t

t

TLH

90% 90%

V

M

t

W

V

M

V

M

90%

10%

t

TLH

THL

AMP (V)

0V

(tR)

(tF)

AMP (V)

0V

VM = 1.5V

Input Pulse Definition

DEFINITIONS

RL = Load resistor; see AC CHARACTERISTICS for value.

= Load capacitance includes jig and probe capacitance;

C

L

see AC CHARACTERISTICS for value.

R

= Termination resistance should be equal to Z

T

pulse generators.

1998 Feb 19

OUT

of

FAMILY

74LVT

7

INPUT PULSE REQUIREMENTS

Amplitude Rep. Rate t

t

W

R

2.7V 10MHz 500ns 2.5ns 2.5ns

t

F

SV00092

Philips Semiconductors Product specification

74LVT29523.3V LVT octal registered transceiver (3-State)

SO24: plastic small outline package; 24 leads; body width 7.5 mm SOT137-1

1998 Feb 19

8

Philips Semiconductors Product specification

74LVT29523.3V LVT octal registered transceiver (3-State)

SSOP24: plastic shrink small outline package; 24 leads; body width 5.3 mm SOT340-1

1998 Feb 19

9

Philips Semiconductors Product specification

74LVT29523.3V LVT octal registered transceiver (3-State)

TSSOP24: plastic thin shrink small outline package; 24 leads; body width 4.4 mm SOT355-1

1998 Feb 19

10

Philips Semiconductors Product specification

74LVT29523.3V LVT octal registered transceiver (3-State)

NOTES

1998 Feb 19

11

Philips Semiconductors Product specification

74LVT29523.3V LVT octal registered transciever (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]

[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: 9397-750-03546

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