74LVT2952D [NXP]
3.3V LVT octal registered transceiver 3-State; 3.3V LVT八进制登记收发器三态
| 型号： | 74LVT2952D |
| 厂家： | 
NXP |
| 描述： | 3.3V LVT octal registered transceiver 3-State |
| 文件： | 总12页 (文件大小：105K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
INTEGRATED CIRCUITS
74LVT2952
3.3V LVT octal registered transceiver
(3-State)
Product specification
1998 Feb 19
Supersedes data of 1994 Sep 27
IC23 Data Handbook
Philips
Semiconductors
Philips Semiconductors
Product specification
3.3V Octal registered transceiver (3-State)
74LVT2952
FEATURES
DESCRIPTION
• 8-bit registered transceiver
The LVT2952 is a high-performance BiCMOS product designed for
V
CC
operation at 3.3V.
• Independent registers for A and B buses
• Output capability: +64mA/-32mA
This device combines low static and dynamic power dissipation with
high speed and high output drive.
• TTL input and output switching levels
• Input and output interface capability to systems at 5V supply
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.
• 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
Data applied to the inputs is entered and stored on the rising edge of
the Clock (CPXX) provided that the Clock Enable (CEXX) is Low.
The data is then present at the 3-State output buffers, but is only
accessible when the Output Enable (OEXX) is Low. Data flow from
A inputs to B outputs is the same as for B inputs to A outputs.
• 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
CONDITIONS
= 25°C; GND = 0V
SYMBOL
PARAMETER
TYPICAL
UNIT
T
amb
Propagation delay
CPBA to An or
CPAB to Bn
t
t
3.1
3.8
PLH
PHL
C = 50pF; V = 3.3V
ns
L
CC
C
Input capacitance
I/O pin capacitance
Total supply current
V = 0V or 3.0V
4
8
pF
pF
IN
I
C
Outputs disabled; V = 0V or 3.0V
I/O
I/O
I
Outputs disabled; V = 3.6V
0.13
mA
CCZ
CC
ORDERING INFORMATION
PACKAGES
TEMPERATURE RANGE OUTSIDE NORTH AMERICA
NORTH AMERICA
74LVT2952 D
DWG NUMBER
SOT137-1
24-Pin Plastic SOL
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
74LVT2952 D
74LVT2952 DB
74LVT2952 PW
24-Pin Plastic SSOP Type II
24-Pin Plastic TSSOP Type I
74LVT2952 DB
7LVT2952PW DH
SOT340-1
SOT355-1
PIN CONFIGURATION
PIN DESCRIPTION
PIN
SYMBOL
NUMBER
NAME AND FUNCTION
24
B7
B6
1
2
3
4
5
6
7
8
9
V
CC
23 A7
22 A6
21 A5
20 A4
19 A3
18 A2
17 A1
16 A0
Clock input A to B /
Clock input B to A
10, 14
11, 13
CPAB / CPBA
CEAB / CEBA
B5
B4
Clock enable input A to B /
Clock enable input B to A
B3
B2
16, 17, 18,
19, 20, 21,
22, 23
A0 – A7
B0 – B7
Data inputs/outputs (A side)
Data outputs/outputs (B side)
B1
B0
8, 7, 6, 5,
4, 3, 2, 1
OEAB
CPAB 10
CEAB 11
GND 12
15
14
13
OEBA
CPBA
CEBA
9, 15
12
OEAB / OEBA
GND
Output enable inputs
Ground (0V)
24
V
CC
Positive supply voltage
SV00036
2
1998 Feb 19
853-1765 18987
Philips Semiconductors
Product specification
3.3V Octal registered transceiver (3-State)
74LVT2952
LOGIC SYMBOL
LOGIC SYMBOL (IEEE/IEC)
15
EN3 (BA)
13
G1
14
1C5
16 17 18 19 20 21 22 23
A0 A1 A2 A3 A4 A5 A6 A7
9
EN4 (AB)
11
G2
10
2C6
10
11
CPAB
CEAB
8
16
3
1
1
5D
4
OEBA
OEAB
15
9
6D
14
13
CPBA
CEBA
7
6
5
4
3
2
1
17
18
19
20
21
22
23
B0 B1 B2 B3 B4 B5 B6 B7
8
7
6
5
4
3
2
1
SV00037
SV00038
LOGIC DIAGRAM
11
CEAB
10
CPAB
9
OEAB
DETAIL A
CE
CP
Q
16
A0
D
CE
CP
Q
8
D
B0
7
6
5
4
3
2
1
17
18
19
20
21
22
23
B1
A1
B2
B3
B4
B5
B6
B7
A2
A3
A4
A5
A6
A7
DETAIL A X 7
13
CEBA
14
15
CPBA
OEBA
SV00039
FUNCTION TABLE for Register An or Bn
FUNCTION TABLE for Output Enable
INPUTS
INPUTS
INTERNAL
Q
OPERATING
MODE
INTERNAL
Q
An or Bn
OUTPUTS
OPERATING
MODE
An or Bn
CPXX
CEXX
OEXX
X
X
H
NC
Hold data
Load data
H
X
Z
Disable outputs
Enable outputs
L
H
↑
↑
L
L
L
H
L
L
L
H
L
H
H = High voltage level
H = High voltage level
L
↑
X
= Low voltage level
= Low-to-High transition
= Don’t care
L
X
= Low voltage level
= Don’t care
XX= AB or BA
Z = High impedance ”off” state
XX= AB or BA
NC= No change
3
1998 Feb 19
Philips Semiconductors
Product specification
3.3V Octal registered transceiver (3-State)
74LVT2952
1, 2
ABSOLUTE MAXIMUM RATINGS
SYMBOL
PARAMETER
CONDITIONS
RATING
UNIT
V
I
DC supply voltage
–0.5 to +4.6
–50
V
mA
V
CC
IK
DC input diode current
V < 0
I
3
V
DC input voltage
–0.5 to +7.0
–50
I
I
DC output diode current
V
O
< 0
mA
V
OK
3
V
OUT
DC output voltage
Output in Off or High state
Output in High state
Output in Low state
–0.5 to +7.0
–64
I
DC output current
mA
OUT
128
T
stg
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 negative voltage ratings may be exceeded if the input and output clamp current ratings are observed.
RECOMMENDED OPERATING CONDITIONS
LIMITS
SYMBOL
PARAMETER
UNIT
MIN
2.7
0
MAX
3.6
V
CC
DC supply voltage
V
V
V
I
Input voltage
5.5
V
High-level input voltage
Low-level Input voltage
High-level output current
Low-level output current
2.0
V
IH
V
0.8
–32
32
V
IL
I
mA
OH
I
OL
mA
Low-level output current; current duty cycle ≤ 50%, f ≥ 1kHz
Input transition rise or fall rate; Outputs enabled
Operating free-air temperature range
64
∆t/∆v
10
ns/V
T
amb
–40
+85
°C
4
1998 Feb 19
Philips Semiconductors
Product specification
3.3V Octal registered transceiver (3-State)
74LVT2952
DC ELECTRICAL CHARACTERISTICS
LIMITS
SYMBOL
PARAMETER
Input clamp voltage
TEST CONDITIONS
Temp = -40°C to +85°C
UNIT
V
1
MIN
TYP
MAX
V
IK
V
V
V
V
V
V
V
V
V
= 2.7V; I = –18mA
–0.9
–1.2
CC
CC
CC
CC
CC
CC
CC
CC
CC
IK
= 2.7 to 3.6V; I = –100µA
V
–0.2
V
CC
–0.1
OH
CC
V
OH
High-level output voltage
= 2.7V; I = –8mA
2.4
2.5
V
OH
= 3.0V; I = –32mA
2.0
2.2
0.1
0.3
0.25
0.3
0.4
OH
= 2.7V; I = 100µA
0.2
0.5
OL
= 2.7V; I = 24mA
OL
V
OL
Low-level output voltage
Power-up output low
= 3.0V; I = 16mA
0.4
V
V
OL
= 3.0V; I = 32mA
0.5
OL
= 3.0V; I = 64mA
0.55
OL
V
RST
V
CC
= 3.6V; I = 1mA; V = GND or V
CC
0.13
0.55
O
I
5
voltage
V
V
V
V
V
= 3.6V; V = V or GND
±0.1
1
±1.0
10
CC
CC
CC
CC
CC
I
CC
Control pins
I/O Data pins
= 0 or 3.6V; V = 5.5V
I
= 3.6V; V = 5.5V
1
20
µA
I
Input leakage current
I
I
4
= 3.6V; V = V
0.1
–1
1.0
I
CC
= 3.6V; V = 0
-5.0
±100
I
I
Output off current
V
CC
V
CC
V
CC
V
CC
= 0V; V or V = 0 to 4.5V
1
µA
µA
OFF
I
O
= 3V; V = 0.8V
75
150
–150
I
6
= 3V; V = 2.0V
–75
I
Bus Hold current A inputs
I
HOLD
= 0V to 3.6V; V = 3.6V
±500
CC
Current into an output in the
I
V
= 5.5V; V = 3.0V
60
125
µA
µA
EX
O
CC
High state when V > V
O
CC
Power up/down 3-State
V
CC
≤ 1.2V; V = 0.5V to V ; V = GND or V
;
CC
O
CC
I
I
±1
±100
PU/PD
3
output current
OE/OE = Don’t care
I
V
V
V
V
= 3.6V; Outputs High, V = GND or V I
= 0
= 0
0.13
3
0.19
12
CCH
CC
CC
CC
CC
I
CC, O
I
Quiescent supply current
Additional supply current
= 3.6V; Outputs Low, V = GND or V I
CC, O
mA
mA
CCL
I
I
= 3.6V; Outputs Disabled; V = GND or V
I = 0
0.13
0.19
CCZ
I
CC, O
= 3V to 3.6V; One input at V – 0.6V,
CC
∆I
0.1
0.2
CC
2
per input pin
Other inputs at V or GND
CC
NOTES:
1. All typical values are at V = 3.3V and T
= 25°C.
amb
CC
2. This is the increase in supply current for each input at V = 0.6V.
CC
3. This parameter is valid for any V between 0V and 1.3V with a transition time of up to 10msec. From V = 1.3V to V = 3.3V ± 0.3V
CC
CC
CC
a transition time of 100µsec is permitted. This parameter is valid for T
= 25°C only.
amb
4. Unused pins at V or GND.
CC
5. For valid test results, data must not be loaded into the flip-flops (or latches) after applying power.
6. This is the bus hold overdrive current required to force the input to the opposite logic state.
5
1998 Feb 19
Philips Semiconductors
Product specification
3.3V Octal registered transceiver (3-State)
74LVT2952
AC CHARACTERISTICS
GND = 0V; t = t = 2.5ns; C = 50pF, R = 500Ω; T = –40°C to +85°C.
amb
R
F
L
L
LIMITS
= 3.3V ± 0.3V
SYMBOL
PARAMETER
WAVEFORM
V
CC
V
CC
= 2.7V
UNIT
1
MIN
TYP
MAX
MAX
f
Maximum clock frequency
1
1
150
200
MHz
ns
MAX
t
t
Propagation delay
CPBA to An, CPAB to Bn
1.3
1.8
3.1
3.8
6.1
6.0
7.1
6.9
PLH
PHL
t
t
Output enable time
OEBA to An, OEAB to Bn
3
4
1.0
1.2
3.4
3.6
5.6
6.5
6.7
8.0
PZH
PZL
ns
ns
t
Output disable time
OEBA to An, OEAB to Bn
3
4
1.0
1.6
3.7
3.4
6.3
5.1
6.9
5.3
PHZ
t
PLZ
NOTE:
1. All typical values are at V = 3.3V and T
= 25°C.
CC
amb
AC SETUP REQUIREMENTS
GND = 0V; t = t = 2.5ns; C = 50pF, R = 500Ω; T
= –40°C to +85°C.
R
F
L
L
amb
LIMITS
SYMBOL
PARAMETER
WAVEFORM
V
CC
= 3.3V ± 0.3V
V
CC
= 2.7V
UNIT
1
MIN
TYP
MIN
t (H)
t (L)
s
Setup time
An to CPAB or Bn to CPBA
2.5
2.5
1
1
2.8
3.0
s
2
2
2
2
1
ns
ns
ns
ns
ns
t (H)
Hold time
An to CPAB ro Bn to CPBA
1.5
2.5
–0.5
–0.5
0.7
2.6
n
t (L)
n
t (H)
Setup time
CEAB to CPAB or CEBA to CPBA
0.9
2.4
0.3
–0.3
0.8
2.7
s
t (L)
s
t (H)
Hold time
CEAB to CPAB or CEBA to CPBA
1.5
2.5
0.3
0
0.7
2.6
n
t (L)
n
t (H)
CPAB or CPBA pulse width
High or Low
3.3
3.3
1
1
3.3
3.3
W
t (L)
W
AC WAVEFORMS
V
M
= 1.5V, V = GND to 2.7V
IN
2.7V
1/f
MAX
An, Bn
CEAB,
CEBA
1.5V
1.5V
1.5V
1.5V
1.5V
2.7V
0V
0V
CPBA or
CPAB
1.5V
t
1.5V
1.5V
t (H)
s
t
(H)
t (L)
t (L)
h
h
s
2.7V
(H)
t (L)
w
w
CPAB,
CPBA
t
t
1.5V
PHL
PLH
V
OH
0V
An or Bn
1.5V
1.5V
NOTE: The shaded areas indicate when the input is permitted
to change for predictable output performance.
V
OL
SV00040
SV00131
Waveform 2. Data Setup and Hold Times
Waveform 1. Propagation Delay, Clock Input to Output, Clock
Pulse Width, and Maximum Clock Frequency
6
1998 Feb 19
Philips Semiconductors
Product specification
3.3V Octal registered transceiver (3-State)
74LVT2952
2.7V
2.7V
0V
OEAB,
OEBA
OEAB,
OEBA
1.5V
t
1.5V
1.5V
t
1.5V
0V
t
t
PZH
PHZ
PZL
PLZ
3V
1.5V
An, Bn
An, Bn
1.5V
0V
SV00132
SV00133
Waveform 3. 3-State Output Enable Time to High Level and
Output Disable Time from High Level
Waveform 4. 3-State Output Enable Time to Low Level and
Output Disable Time from Low Level
TEST CIRCUIT AND WAVEFORMS
6.0V
V
CC
t
W
AMP (V)
Open
GND
90%
90%
NEGATIVE
PULSE
V
V
M
V
V
OUT
M
10%
R
R
IN
L
10%
90%
PULSE
GENERATOR
D.U.T.
0V
(t
t
t
(t
(t
)
t
TLH
)
THL
F
R
R
T
C
L
L
)
t
(t )
TLH
R
THL F
AMP (V)
90%
M
Test Circuit for 3-State Outputs
POSITIVE
PULSE
V
V
M
10%
10%
t
W
0V
SWITCH POSITION
V
= 1.5V
M
TEST
SWITCH
Open
6V
Input Pulse Definition
t
/t
PLH PHL
t
/t
PLZ PZL
t
/t
GND
PHZ PZH
INPUT PULSE REQUIREMENTS
DEFINITIONS
FAMILY
R = Load resistor; see AC CHARACTERISTICS for value.
L
Amplitude
Rep. Rate
t
t
R
t
F
W
C = Load capacitance includes jig and probe capacitance;
L
see AC CHARACTERISTICS for value.
74LVT
2.7V
v10MHz
500ns v2.5ns v2.5ns
R = Termination resistance should be equal to Z
T
of
OUT
pulse generators.
SV00092
7
1998 Feb 19
Philips Semiconductors
Product specification
3.3V LVT octal registered transceiver (3-State)
74LVT2952
SO24: plastic small outline package; 24 leads; body width 7.5 mm
SOT137-1
8
1998 Feb 19
Philips Semiconductors
Product specification
3.3V LVT octal registered transceiver (3-State)
74LVT2952
SSOP24: plastic shrink small outline package; 24 leads; body width 5.3 mm
SOT340-1
9
1998 Feb 19
Philips Semiconductors
Product specification
3.3V LVT octal registered transceiver (3-State)
74LVT2952
TSSOP24: plastic thin shrink small outline package; 24 leads; body width 4.4 mm
SOT355-1
10
1998 Feb 19
Philips Semiconductors
Product specification
3.3V LVT octal registered transceiver (3-State)
74LVT2952
NOTES
11
1998 Feb 19
Philips Semiconductors
Product specification
3.3V LVT octal registered transciever (3-State)
74LVT2952
Data sheet status
[1]
Data sheet
status
Product
status
Definition
Objective
specification
Development
This data sheet contains the design target or goal specifications for product development.
Specification may change in any manner without notice.
Preliminary
specification
Qualification
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.
Product
specification
Production
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] 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.
Righttomakechanges—PhilipsSemiconductorsreservestherighttomakechanges, withoutnotice, intheproducts, includingcircuits,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
Copyright Philips Electronics North America Corporation 1998
All rights reserved. Printed in U.S.A.
Sunnyvale, California 94088–3409
Telephone 800-234-7381
print code
Date of release: 05-96
9397-750-03546
Document order number:
Philips
Semiconductors
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