Page 1
INTEGRATED CIRCUITS
74LVC2952A
Octal registered tranceiver with 5-volt
tolerant inputs/ouputs (3-State)
Product specification 1998 Jul 29
Page 2
Philips Semiconductors Product specification
Octal registered tranceiver with 5-volt tolerant
inputs/ouputs (3-State)
FEA TURES
•5-volt tolerant inputs/outputs, for interfacing with 5-volt logic
•Wide supply voltage range of 1.2 V to 3.6 V
•In accordance with the JEDEC standard no. 8-1 A
•Inputs accept voltages up to 5.5 V
•CMOS low power consumption
•Flow-through pin-out architecture
•3-State outputs
•Direct interface with TTL levels
•Integrated 30 damping resistor
QUICK REFERENCE DATA
GND = 0 V; T
= 25°C; tr =t
amb
SYMBOL
t
PHL/tPLH
f
max
C
I
C
I/O
C
PD
Propagation delay
CPnn to An, B
Maximum clock frequency 150 MHz
Input capacitance 5 pF
Input/output capacitance 10 pF
Power dissipation capacitance per buffer VCC = 3.3V
NOTE:
1C
is used to determine the dynamic power dissipation (PD in µW)
PD
P
= CPD × V
D
2
× fi (CL × V
CC
fi = input frequency in MHz; CL = output load capacity in pF;
f
= output frequency in MHz; VCC = supply voltage in V;
o
(C
2
× V
× fo) = sum o f t h e o u t p u t s .
L
CC
≤ 2.5 ns
f
PARAMETER CONDITIONS TYPICAL UNIT
n
2
× fo) where:
CC
CL = 50 pF;
VCC = 3.3 V
DESCRIPTION
The 74LVC2952A is a low-power, low-voltage, Si-gate CMOS device
and superior to most advanced CMOS compatible TTL families. The
74LVC2952A is an octal non-inverting registered transceiver. Two 8-bit
back to back registers store data flowing in both directions between two
bidirectional busses. Data applied to the inputs is entered and stored on
the rising edge of the clock (CPnn) provided that the clock enable CE
is LOW. The data is then present at the 3-State output buffers, but is
only accessible when the output enable input (OE
from A inputs to B outputs is the same as for B inputs to A outputs. The
74LVC2952A is identical to the 74LVC2953A but has non-inverting
outputs.
1
74L VC2952A
) is LOW. Data flow
nn
4.3 ns
31 pF
)
nn
ORDERING INFORMATION
PACKAGES TEMPERATURE RANGE OUTSIDE NORTH AMERICA NORTH AMERICA PKG. DWG. #
24-Pin Plastic SO –40°C to +125°C 74LVC2952A D 74LVC2952A D SOT137-1
24-Pin Plastic SSOP Type II –40°C to +125°C 74LVC2952A DB 74LVC2952A DB SOT340-1
24-Pin Plastic TSSOP Type I –40°C to +125°C 74LVC2952A PW 74LVC2952APW DH SOT355-1
PIN CONFIGURATION
B
1
7
B
2
6
B
3
5
B
4
4
B
5
3
B
6
2
B
7
1
B
8
0
OE
9
AB
CP
10
AB
11
CE
AB
12
GND
24
V
CC
A
23
7
A
22
6
A
21
5
20
A
4
19
A
3
18
A
2
A
17
1
16
A
0
15
OE
BA
14
CP
BA
13
CE
BA
SV01716
PIN DESCRIPTION
PIN NUMBER SYMBOL FUNCTION
8, 7, 6, 5, 4, 3, 2, 1, B0 to B
12 GND Ground (0 V)
9, 15 OEAB,OE
10, 14 CPAB, CPBAClock inputs
11, 13, CEAB, CEBAClock enable inputs
16, 17, 18, 19, 20,
21, 22, 23
24 V
A0 to A
CC
B data inputs/outputs
7
Output enable inputs
BA
(active LOW)
A data inputs/outputs
7
Positive supply voltage
1998 Jul 29 853-1993 19803
2
Page 3
Philips Semiconductors Product specification
Octal registered tranceiver with 5-volt tolerant
inputs/ouputs (3-State)
LOGIC SYMBOL (IEEE/IEC)
9
OE
CP
10
CE
11
A
16
A
17
A
18
A
19
A
20
21
A
A
22
A
23
AB
OE
CP
CE
BA
15
AB
AB
0
1
2
3
4
5
6
7
BA
BA
B
0
B
1
B
2
B
3
B
4
B
5
B
6
B
7
SV01717
14
13
8
7
6
5
4
3
2
1
FUNCTIONAL DIAGRAM
16
A
0
A
17
1
A
18
2
A
19
3
A
20
4
A
21
5
A
22
6
A
23
7
9
OE
AB
15
OE
BA
11
CE
AB
13
CE
BA
10
CP
AB
14
CP
BA
74LVC2952A
B
8
0
7
B
1
6
B
2
5
B
3
4
B
4
3
B
5
2
B
6
1
B
7
LOGIC SYMBOL
14
10
13
11
15
9
16
17
18
19
20
21
22
23
G1
G2
EN3
EN4
6D
1 C5
2 C6
3
SV01719
1
5D
4
1
8
7
6
5
4
3
2
1
SV01718
1998 Jul 29
3
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Philips Semiconductors Product specification
n n
OPERATING MODE
SYMBOL
PARAMETER
CONDITIONS
UNIT
V
V
V
V
V
V
mW
Octal registered tranceiver with 5-volt tolerant
inputs/ouputs (3-State)
FUNCTION TABLE for register An or B
INPUTS
An or B
CP
n
nn
CE
X X H NC Hold data
L ↑ L L Load data
H ↑ L H Load data
NOTES:
H = HIGH voltage level
L = LOW voltage level
X = don’t care
INTERNAL OPERATING
nn
RECOMMENDED OPERATING CONDITIONS
DC supply voltage (for max. speed performance) 2.7 3.6
DC supply voltage (for low-voltage applications) 1.2 3.6
DC input voltage range 0 5.5 V
I
DC output voltage range; output HIGH or LOW state 0 V
DC input voltage range; output 3-State 0 5.5
Operating free-air temperature range –40 +85 °C
Input rise and fall times
f
T
CC
V
I/O
amb
tr, t
n
Q MODE
74LVC2952A
FUNCTION TABLE for output enable
INPUTS
OE
nn
H X Z Disable outputs
L L L Enable outputs
L H H Enable outputs
Z = high impedance OFF-state
↑ = Low-to-High transition
NC = no change
VCC = 1.2 to 2.7V
VCC = 2.7 to 3.6V
INTERNAL An or B
Q
OUTPUTS
LIMITS
MIN MAX
0
0
n
CC
20
10
ns/V
ABSOLUTE MAXIMUM RATINGS
1
In accordance with the Absolute Maximum Rating System (IEC 134).
Voltages are referenced to GND (ground = 0 V).
SYMBOL
V
CC
I
IK
V
I
I
OK
DC supply voltage –0.5 to +6.5 V
DC input diode current VIt 0 –50 mA
DC input voltage Note 2 –0.5 to +6.5 V
DC output diode current V
PARAMETER CONDITIONS RATING UNIT
uVCC or VO t 0 "50 mA
O
DC output voltage; output HIGH or LOW Note 2 –0.5 to VCC +0.5
I
GND
I/O
I
O
T
stg
DC output voltage; output 3-State Note 2 –0.5 to 6.5
DC output source or sink current VO = 0 to V
, I
DC VCC or GND current "100 mA
CC
CC
"50 mA
Storage temperature range –65 to +150 °C
Power dissipation per package
P
TOT
– plastic mini-pack (SO) above +70°C derate linearly with 8 mW/K 500
– plastic shrink mini-pack (SSOP and TSSOP) above +60°C derate linearly with 5.5 mW/K 500
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 input and output voltage ratings may be exceeded if the input and output current ratings are observed.
1998 Jul 29
4
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Philips Semiconductors Product specification
VIHHIGH level Input voltage
V
VILLOW level Input voltage
V
V
V
V
V
I
100µA
V
0.2
V
VOHHIGH level output voltage
Octal registered tranceiver with 5-volt tolerant
inputs/ouputs (3-State)
DC ELECTRICAL CHARACTERISTICS
Over recommended operating conditions voltages are referenced to GND (ground = 0V)
SYMBOL PARAMETER TEST CONDITIONS Temp = -40°C to +85°C UNIT
VCC = 1.2V V
VCC = 2.7 to 3.6V 2.0
VCC = 1.2V GND
VCC = 2.7 to 3.6V 0.8
VCC = 2.7V; VI = VIH or VIL; IO = –12mA VCC*0.5 V
;
= 3.0V;
CC
=
I
VCC = 3.0V; VI = VIH or V
VCC = 3.0V; VI = VIH or V
;
or
;
IH
= –
IL
O
IO = –18mA VCC*0.6
IL;
IO = –24mA VCC*0.8
IL;
CC
VCC = 2.7V; VI = VIH or VIL;IO = 12mA 0.40
VCC = 3.0V; VI = VIH or VIL;IO = 100µA 0.20
VCC = 3.0V; VI = VIH or V
or VO = 5.5V "10 µA
I
= 24mA 0.55
IL;IO
VCC = 2.7V to 3.6V; VI = VCC –0.6V; IO = 0 5 500 µA
= 25°C.
amb
V
I
IHZ/IILZ
I
OZ
I
I
CC
∆I
LOW level output voltage
OL
I
Input leakage current VCC = 3.6V; VI = 5.5V or GND Not for I/O pins "0.1 "5 µA
I
Input current for common I/O pins VCC = 3.6V; VI = 5.5V or GND "0.1 "15 µA
3-State output OFF-state current VCC = 3.6V; VI = VIH or VIL;VO = 5.5V or GND 0.1 "5 µA
Power off leakage supply VCC = 0.0V; V
off
Quiescent supply current VCC = 3.6V; VI = VCC or GND; IO = 0 0.1 10 µA
Additional quiescent supply
CC
current per input pin
NOTES:
1 All typical values are at V
p
p
p
= 3.3V and T
CC
74LVC2952A
LIMITS
MIN TYP1MAX
CC
*
CC
V
V
AC CHARACTERISTICS
GND = 0 V; tr = tf v 2.5 ns; CL = 50 pF; RL = 500
SYMBOL PARAMETER WAVEFORM VCC = 3.3V ±0.3V VCC = 2.7V VCC = 1.2V UNIT
t
PHL/tPLH
t
PZH/tPZL
t
PHZ/tPLZ
NOTE:
These typical values are at V
1998 Jul 29
t
t
f
max
LIMITS
MIN TYP MAX MIN TYP MAX TYP
Propagation delay
CPBA, CPAB to An, B
n
3-state output enable time
OEBA, OEAB, to An, B
n
3-state output disable time
OEBA, OEAB, to An, B
t
w
su
su
t
h
t
h
CPAB, CPBA pulse width,
HIGH or LOW
Set-up time HIGH or LOW
An, Bn to CPAB, CP
Set-up time, HIGH or LOW
CEAB, CEBA to CPAB, CP
Hold time
An, Bn to CPAB, CP
Hold time
CEAB, CEBA to CPAB, CP
n
BA
BA
Maximum clock pulse
frequency
= 3.3V and T
CC
Figures 1, 4 1.5 4.1 7.6 1.5 4.4 8.6 16 ns
Figures 3, 4 1.5 3.9 7.6 1.5 4.7 8.6 16 ns
Figures 3, 4 1.5 3.4 6.6 1.5 3.8 7.6 8 ns
Figure 1 3.0 1.5 – 3.0 1.5 – – ns
Figure 2 2.0 –0.5 – 2.0 – – – ns
Figure 2 2.0 0.5 – 2.0 – – – ns
BA
Figure 2 1.5 0.6 – 1.5 – – – ns
Figure 2 1.5 0 – 1.5 – – – ns
BA
Figure 2 100 150 – 80 – – – MHz
= 25°C.
amb
5
Page 6
Philips Semiconductors Product specification
Octal registered tranceiver with 5-volt tolerant
inputs/ouputs (3-State)
AC WAVEFORMS
VM = 0.6 V at VCC = 1.2 V
= 1.0 V at VCC = 2.0 V
V
M
V
= 1.5 V at VCC = 3.0 V
M
and VOH are the typical output voltage drop that occur with the
V
OL
3-State output load.
1/f
max
V
I
CP
INPUT
XX
GND
V
OH
An, B
n
OUTPUT
V
OL
Figure 1. Clock input (CPBA, CPAB) to output (Bn, An)
propagation delays, the clock pulse width
V
M
t
W
t
PHL
V
M
and the maximum clock frequency.
t
PLH
SV01720
TEST CIRCUIT
PULSE
GENERATOR
V
V
CC
2.7V V
2.7V – 3.6V 2.7V
Figure 4. Load circuitry for switching times.
74LVC2952A
S
1
2 x V
V
CC
Open
2 x V
GND
500Ω
500Ω
1
CC
I
R
T
V
CC
D.U.T.
I
V
O
C
L
t
PLH/tPHL
t
PLZ/tPZL
t
PHZ/tPZH
50pF
Test S
Open
GND
SY00003
CC
V
I
An, Bn, CE
CP
XX
INPUT
GND
INPUT
GND
nn
V
I
V
M
t
h
t
su
V
M
t
h
t
su
SV01721
Figure 2. Set-up and hold times for the An, Bn and CEnn inputs.
NOTE:
The shaded areas indicate when the input is permitted to
change for predictable output performance
V
I
CP
INPUT
XX
GND
V
OUTPUT
LOW–to–OFF
OFF–to–LOW
V
V
OUTPUT
HIGH-to-OFF
OFF-to-HIGH
GND
CC
OL
OH
V
outputs
enabled
M
outputs
disabled
t
PZL
V
M
t
PZH
V
M
outputs
enabled
t
PLZ
V
Y
t
PHZ
V
X
SV01722
Figure 3. 3-State enable and disable times.
1998 Jul 29
6
Page 7
Philips Semiconductors Product specification
Octal registered tranceiver with 5-volt tolerant
inputs/ouputs (3-State)
SO24: plastic small outline package; 24 leads; body width 7.5 mm SOT137-1
74LVC2952A
1998 Jul 29
7
Page 8
Philips Semiconductors Product specification
Octal registered tranceiver with 5-volt tolerant
inputs/ouputs (3-State)
SSOP24: plastic shrink small outline package; 24 leads; body width 5.3 mm SOT340-1
74LVC2952A
1998 Jul 29
8
Page 9
Philips Semiconductors Product specification
Octal registered tranceiver with 5-volt tolerant
inputs/ouputs (3-State)
TSSOP24: plastic thin shrink small outline package; 24 leads; body width 4.4 mm SOT355-1
74LVC2952A
1998 Jul 29
9
Page 10
Philips Semiconductors Product specification
Octal registered tranceiver with 5-volt tolerant
inputs/ouputs (3-State)
NOTES
74LVC2952A
1998 Jul 29
10
Page 11
Philips Semiconductors Product specification
Octal registered tranceiver with 5-volt tolerant
inputs/ouputs (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]
74LVC2952A
[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 800-234-7381
Copyright Philips Electronics North America Corporation 1998
All rights reserved. Printed in U.S.A.
print code Date of release: 08-98
Document order number: 9397-750-04524
yyyy mmm dd
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