7LVC646APWDH [NXP]
Octal bus transceiver/register 3-State; 八路总线收发器/寄存器三态
| 型号： | 7LVC646APWDH |
| 厂家： | 
NXP |
| 描述： | Octal bus transceiver/register 3-State |
| 文件： | 总16页 (文件大小：142K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
INTEGRATED CIRCUITS
74LVC646A
Octal bus transceiver/register (3-State)
Product specification
1998 Jul 29
Supercedes data of 1998 Mar 25
IC24 Data Handbook
Philips
Semiconductors
Philips Semiconductors
Product specification
Octal bus transceiver/register (3-State)
74LVC646A
for multiplexed transmission of data directly from the internal
FEATURES
registers. Data on the ‘A’ or ‘B’ bus will be clocked in the internal
registers, as the appropriate clock (CPAB or CPBA) goes to a HIGH
logic level. Output enable (OE) and direction (DIR) inputs are
provided to control the transceiver function. In the transceiver mode,
data present at the high-impedance port may be stored in either the
‘A’ or ‘B’ register, or in both. The select source inputs (SAB and
SBA) can multiplex stored and real-time (transparent mode) data.
• Wide supply voltage range of 1.2V to 3.6V
• Flow-through pin-out architecture
• In accordance with JEDEC standard no. 8-1A
• CMOS low power consumption
• Direct interface with TTL levels
The direction (DIR) input determines which bus will receive data
when OE is active (LOW). In the isolation mode (OE = HIGH), ‘A’
data may be stored in the ‘B’ register and/or ‘B’ data may be stored
in the ‘A’ register.
• 5 Volt tolerant inputs/outputs, for interfacing with 5 Volt logic
DESCRIPTION
The 74LVC646A is a high performance, low-power, low-voltage
Si-gate CMOS device, superior to most advanced CMOS
compatible TTL families.
When an output function is disabled, the input function is still
enabled and may be used to store and transmit data. Only one of
the two buses, ‘A’ or ‘B’ may be driven at a time.
Inputs can be driven from either 3.3V or 5.0V devices. In 3-State
operation, outputs can handle 5V. This feature allows the use of
these devices as translators in a mixed 3.3V/5V environment.
The ‘646A’ is functionally identical to the ‘648A’ but has non-inverting
data paths.
The 74LVC646A consist of non-inverting bus transceiver circuits
with 3-State outputs, D-type flip-flops and control circuitry arranged
QUICK REFERENCE DATA
GND = 0V; T
= 25°C; t = t ≤ 2.5 ns
amb
r f
SYMBOL
PARAMETER
CONDITIONS
TYPICAL
UNIT
Propagation delay
An to Yn
C = 50pF
L
t
f
/t
ns
PHL PLH
V
CC
= 3.3V
3.9
250
5.0
10
Maximum clock frequency
Input capacitance
MHz
pF
max
C
C
C
I
Input/output capacitance
Power dissipation capacitance per gate
pF
I/O
PD
Notes 1, 2
26
pF
NOTES:
1. C is used to determine the dynamic power dissipation (P in µW)
PD
D
2
2
P
= C V
x f )Σ (C V
f ) where:
D
PD
CC
i
L
CC o
f = input frequency in MHz; C = output load capacitance in pF;
i
L
f = output frequency in MHz; V = supply voltage in V;
o
CC
2
Σ (C V
f ) = sum of the outputs.
L
CC
o
2. The condition is V = GND to V
I
CC.
ORDERING AND PACKAGE INFORMATION
OUTSIDE NORTH
AMERICA
PACKAGES
TEMPERATURE RANGE
NORTH AMERICA
PKG. DWG. #
24-Pin Plastic SO
–40°C to +85°C
74LVC646A D
74LVC646A D
SOT137-1
24-Pin Plastic SSOP Type II
24-Pin Plastic TSSOP Type I
–40°C to +85°C
–40°C to +85°C
74LVC646A DB
74LVC646A PW
74LVC646A DB
SOT340-1
SOT355-1
7LVC646APW DH
2
1998 Jul 29
853-2105 19803
Philips Semiconductors
Product specification
Octal bus transceiver/register (3-State)
74LVC646A
PIN CONFIGURATION
PIN DESCRIPTION
PIN NUMBER SYMBOL
FUNCTION
‘A’ to ‘B’ clock input
(LOW-to-HIGH, edge-triggered)
1
CP
AB
CP
S
1
2
V
24
AB
AB
CC
2
3
S
Select ‘A’ to ‘B’ source input
Direction control input
AB
23 CP
BA
DIR
DIR
A
3
22
S
BA
4, 5, 6, 7, 8,
9, 10, 11
A to A
‘A’ data inputs/outputs
Ground (0V)
0
7
7
4
21 OE
0
12
GND
A
A
A
A
A
A
A
5
20
19
B
B
B
B
B
B
B
B
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
20, 19, 18, 17,
16, 15, 14, 13
6
B to B
0
‘B’ data inputs/outputs
7
18
17
16
15
14
13
21
22
OE
Output enable input (active LOW)
Select ‘B’ to ‘A’ source input
8
S
BA
9
‘B’ to ‘A’ clock input
(LOW-to-HIGH, edge-triggered)
23
24
CP
V
BA
10
11
12
Positive supply voltage
CC
GND
SV00766
FUNCTION TABLE
INPUTS
CP
DATA I/O *
FUNCTION
OE
DIR
CP
S
AB
S
BA
A to A
B to B
AB
BA
0
7
0
7
X
X
X
X
↑
X
X
↑
X
X
X
X
input
un *
un *
input
store A, B unspecified *
store B, A unspecified *
H
H
X
X
↑
↑
X
X
X
X
store A and B data,
isolation hold storage
input
output
input
input
input
H or L
H or L
L
L
L
L
X
X
X
X
X
L
H
real-time B data to A bus
stored B data to A bus
H or L
L
L
H
H
X
X
X
L
H
X
X
real-time A data to B bus
stored A data to B bus
output
H or L
*
The data output functions may be enabled or disabled by
various signals at the OE and DIR inputs. Data input
functions are always enabled, i.e., data at the bus inputs will
be stored on every LOW-to-HIGH transition on the clock
inputs.
un
H
L
= unspecified
= HIGH voltage level
= LOW voltage level
= Don’t care
X
↑
= LOW-to-HIGH level transition
3
1998 Jul 29
Philips Semiconductors
Product specification
Octal bus transceiver/register (3-State)
74LVC646A
LOGIC SYMBOL
FUNCTIONAL DIAGRAM
21
4
A
A
A
A
A
A
A
A
B
B
B
B
B
B
B
B
20
19
18
17
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
OE
5
6
CP
S
CP
S
23
1
2
AB
BA
22
20
19
AB
BA
B
7
A
A
A
A
A
A
A
A
4
0
1
2
3
4
5
6
7
0
16
15
14
13
8
B
B
B
B
B
B
B
5
1
2
3
4
5
6
7
9
6
18
17
16
15
14
13
10
11
7
8
9
21 OE
10
11
3
2
DIR
S
AB
DIR
22
1
S
BA
3
CP
AB
BA
23
CP
SV00765
SV00763
LOGIC SYMBOL (IEEE/IEC)
23
C4
1
C5
21
G3
22
G6
2
G7
3
3EN2
3EN1
≥ 1
1
6
6
4D
4
1
20
19
1
≥
5D
7
7
2
1
5
6
18
17
16
15
14
13
7
8
9
10
11
SV00764
4
1998 Jul 29
Philips Semiconductors
Product specification
Octal bus transceiver/register (3-State)
74LVC646A
LOGIC DIAGRAM
OE
DIR
S
BA
CP
BA
S
AB
CP
AB
V
CC
S
D
Y
1
MUX
D
A
n
D
Q
2
FF
n
CP
V
CC
S
D
Y
1
MUX
B
n
D
Q
n
D
2
FF
CP
8 identical channels
SV00762
5
1998 Jul 29
Philips Semiconductors
Product specification
Octal bus transceiver/register (3-State)
74LVC646A
RECOMMENDED OPERATING CONDITIONS
LIMITS
SYMBOL
PARAMETER
CONDITIONS
UNIT
MAX
MIN
2.7
1.2
0
DC supply voltage (for max. speed performance)
DC supply voltage (for low-voltage applications)
DC input voltage range
3.6
V
CC
V
3.6
V
I
5.5
V
V
DC output voltage range; output HIGH or LOW state
DC output voltage range; output 3-State
Operating free-air temperature range
0
V
CC
V
O
0
5.5
T
amb
–40
+85
°C
V
CC
V
CC
= 1.2 to 2.7V
= 2.7 to 3.6V
0
0
20
10
t , t
r
Input rise and fall times
ns/V
f
1
ABSOLUTE MAXIMUM RATINGS
In accordance with the Absolute Maximum Rating System (IEC 134)
Voltages are referenced to GND (ground = 0V)
SYMBOL
PARAMETER
DC supply voltage
CONDITIONS
RATING
–0.5 to +6.5
–50
UNIT
V
CC
I
IK
V
mA
V
DC input diode current
V t0
I
V
I
DC input voltage
Note 2
–0.5 to +6.5
"50
I
DC output diode current
V
O
uV or V t 0
mA
OK
CC
O
DC output voltage; output HIGH or LOW
DC output voltage; output 3-State
DC output diode current
Note 2
Note 2
–0.5 to V +0.5
CC
V
V
O
–0.5 to 6.5
"50
I
O
V
O
= 0 to V
CC
mA
mA
°C
I
, I
DC V or GND current
"100
GND CC
CC
T
stg
Storage temperature range
–65 to +150
Power dissipation per package
– plastic mini-pack (SO)
– plastic shrink mini-pack (SSOP and
TSSOP)
above +70°C derate linearly with 8 mW/K
above +60°C derate linearly with 5.5 mW/K
500
500
P
TOT
mW
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.
6
1998 Jul 29
Philips Semiconductors
Product specification
Octal bus transceiver/register (3-State)
74LVC646A
DC ELECTRICAL CHARACTERISTICS
Over recommended operating conditions voltages are referenced to GND (ground = 0V)
LIMITS
SYMBOL
PARAMETER
TEST CONDITIONS
Temp = -40°C to +85°C
UNIT
1
MIN
TYP
MAX
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
= 1.2V
V
CC
V
HIGH level Input voltage
LOW level Input voltage
V
V
IH
= 2.7 to 3.6V
= 1.2V
2.0
GND
0.8
V
IL
= 2.7 to 3.6V
= 2.7V; V = V or V ; I = –12mA
V
V
V
V
*0.5
I
IH
IL
O
CC
CC
CC
CC
= 3.0V; V = V or V ; I = –100µA
*0.2
*0.6
*0.8
V
CC
I
IH
IL
O
V
OH
HIGH level output voltage
LOW level output voltage
V
= 3.0V; V = V or V I
= –18mA
I = –24mA
I
IH
IL; O
= 3.0V; V = V or V
IL; O
I
IH
= 2.7V; V = V or V ; I = 12mA
0.40
0.20
0.55
"5
I
IH
IL
O
= 3.0V; V = V or V ; I = 100µA
GND
V
OL
V
I
IH
IL
O
= 3.0V; V = V or V
I = 24mA
IL; O
I
IH
I
Input leakage current
= 3.6V; V = 5.5V or GND NotforI/Opins
"0.1
"0.1
0.1
µA
µA
µA
µA
µA
I
I
I
/I
Input current for common I/O pins
3-State output OFF-state current
Power off leakage current
Quiescent supply current
= 3.6V; V = V or GND
"15
"10
"10
10
IHZ ILZ
I
CC
I
= 3.6V; V = V or V ; V = 5.5V or GND
I IH IL O
OZ
I
= 0.0V; V or V = 5.5V
0.1
OFF
I
O
I
= 3.6V; V = V or GND; I = 0
0.1
CC
I
CC
O
Additional quiescent supply current per
input pin
∆I
CC
V
CC
= 2.7V to 3.6V; V = V –0.6V; I = 0
5
500
µA
I
CC
O
NOTES:
1. All typical values are at V = 3.3V and T
= 25°C.
amb
CC
7
1998 Jul 29
Philips Semiconductors
Product specification
Octal bus transceiver/register (3-State)
74LVC646A
AC CHARACTERISTICS
GND = 0 V; t = t v 2.5 ns; C = 50 pF
r
f
L
LIMITS
V
1.2V
=
CC
SYMBOL
PARAMETER
WAVEFORM
V
CC
= 3.3V ±0.3V
V
CC
= 2.7V
UNIT
1
MIN
TYP
MAX
MIN
MAX
TYP
Propagation delay
An, Bn to Bn, An
t
/t
Figures 1, 6
Figures 2, 6
Figures 3, 6
Figures 4, 6
Figures 4, 6
Figures 5, 6
Figures 5, 6
1.5
3.9
6.8
7.6
8.5
7.8
6.1
7.9
6.0
1.5
7.8
8.6
9.5
8.8
7.1
8.9
7.0
15
19
19
20
10
20
12
ns
ns
ns
ns
ns
ns
ns
PHL PLH
Propagation delay
t
t
t
t
t
t
t
1.5
1.5
1.5
1.5
1.5
1.5
4.6
4.9
4.5
3.9
4.6
3.5
1.5
1.5
1.5
1.5
1.5
1.5
PHL/ PLH
CP , CP to B , A
n
AB
BA
n
Propagation delay
, S to B , A
n
t
PHL/ PLH
S
AB
BA
n
3-State output enable time
OEn to An, Bn
/t
PZH PZL
3-State output disable time
OEn to An, Bn
/t
PHZ PLZ
3-State output enable time
DIR to An, Bn
/t
PZH PZL
3-State output disable time
DIR to An, Bn
/t
PHZ PLZ
Clock pulse width
HIGH or LOW
t
Figure 1, 3
Figure 2
3.3
1.6
1.9
–
–
3.3
1.6
–
–
–
–
ns
ns
W
CP or CP
AB
BA
Set-up time
t
su
0.35
An, Bn to CP , CP
AB
BA
Hold time
An, Bn to CP , CP
t
Figure 2
Figure 2
1.0
–0.3
250
–
–
1.0
–
–
–
–
ns
ns
h
AB
BA
f
Maximum clock pulse frequency
150
125
max
NOTE:
1. These typical values are at V = 3.3V and T
= 25°C.
amb
CC
8
1998 Jul 29
Philips Semiconductors
Product specification
Octal bus transceiver/register (3-State)
74LVC646A
AC WAVEFORMS
V
V
V
= 1.5V at V w 2.7V
M
CC
= 0.5V * V at V t 2.7V
M
CC
CC
and V are the typical output voltage drop that occur with the
OL
OH
output load.
V
X
V
X
V
Y
V
Y
= V + 0.3V at V w 2.7V
OL CC
= V + 0.1V at V < 2.7V
OL
CC
CC
= V – 0.3V at V w 2.7V
OH
CC
V
I
= V – 0.1V at V < 2.7V
OH
CC
CC
S
, S
AB
BA
V
M
INPUT
GND
t
t
PHL
PLH
V
OH
B
, A
V
n
n
I
V
M
OUTPUT
A
n
, B
n
INPUT
V
M
V
OL
GND
t
t
PHL
PLH
V
OH
B
, A
n
n
V
M
OUTPUT
SV00759
V
OL
Figure 3. Input S , S to output B , A propagation delay
AB
BA
n
n
times.
SV00761
V
I
Figure 1. Input An, Bn to output Bn, An propagation delays.
OE INPUT
GND
V
M
t
t
PZL
PLZ
V
CC
OUTPUT
LOW–to–OFF
OFF–to–LOW
V
M
V
I
V
X
V
V
OL
A
, B
n
INPUT
n
V
t
M
t
PZH
t
PHZ
GND
V
OH
t
t
h
h
Y
t
OUTPUT
HIGH–to–OFF
OFF–to–HIGH
su
su
V
M
V
OH
CP , CP
GND
AB
BA
V
outputs
disabled
outputs
enabled
outputs
enabled
M
OUTPUT
V
OL
t
W
1/f
max
V
OH
B
, A
n
n
SV00758
OUTPUT
Figure 4. Input OE to output A , B 3-State enable and disable
n
n
V
OL
t
t
PLH
times.
PHL
SV00760
Figure 2. A , B to CP , CP set-up and hold times, clock
n
n
AB
BA
CP , CP pulse width, maximum clock pulse frequency and
AB
BA
the CP , CP to output B , A propagation delays.
AB
BA
n
n
9
1998 Jul 29
Philips Semiconductors
Product specification
Octal bus transceiver/register (3-State)
74LVC646A
AC WAVEFORMS (Continued)
TEST CIRCUIT
V
V
V
= 1.5V at V w 2.7V
M
CC
S
1
2 x V
Open
= 0.5V * V at V t 2.7V
CC
V
M
CC
CC
CC
and V are the typical output voltage drop that occur with the
OL
OH
GND
output load.
500Ω
500Ω
V
V
O
I
V
X
V
X
V
Y
V
Y
= V + 0.3V at V w 2.7V
OL CC
PULSE
GENERATOR
D.U.T.
= V + 0.1V at V < 2.7V
OL
CC
CC
= V – 0.3V at V w 2.7V
OH
CC
50pF
C
L
R
T
= V – 0.1V at V < 2.7V
OH
CC
CC
Test
/t
S
1
V
I
V
V
CC
I
t
Open
PLH PHL
DIR INPUT
GND
V
M
t 2.7V
2.7V – 3.6V
V
t
/t
2 x V
CC
CC
PLZ PZL
2.7V
t
/t
GND
PHZ PZH
t
t
PZH
PHZ
SY00003
V
OH
V
Y
V
Figure 6. Load circuitry for switching times.
A
A
OUTPUT
n
M
GND
t
PZL
V
CC
t
PLZ
V
OUTPUT
M
n
V
X
V
V
OL
t
PHZ
PHZ
V
OH
Y
t
PZH
V
V
B
OUTPUT
M
M
n
V
OL
t
t
PZL
V
OH
B
OUTPUT
n
V
X
V
OL
SV00757
Figure 5. Input DIR to output A , B 3-State enable and disable
n
n
times.
10
1998 Jul 29
Philips Semiconductors
Product specification
Octal bus transceiver/register (3-State)
74LVC646A
APPLICATION INFORMATION
Real-time transfer; bus B to bus A
Real-time transfer; bus A to bus B
SV00777
SV00778
(1)
OE
L
(14)
DIR
L
(28)
CP
(16)
CP
(27)
(15)
(1)
OE
L
(14)
DIR
H
(28)
CP
(16)
CP
(27)
(15)
S
AB
S
BA
S
AB
S
BA
AB
BA
AB
BA
X
X
X
L
X
X
L
X
Storage from A, B or A and B
Transfer storage data to A or B
SV00779
SV00780
(1)
OE
X
(14)
DIR
X
(28)
CP
(16)
CP
(27)
(15)
(1)
OE
L
(14)
DIR
L
(28)
CP
(16)
CP
(27)
(15)
S
AB
S
BA
AB
BA
S
AB
S
BA
AB
BA
↑
X
↑
X
↑
X
X
X
X
L
X
H or L
X
X
H
H
X
X
X
L
H
H or L
H
X
↑
X
11
1998 Jul 29
Philips Semiconductors
Product specification
Octal bus transceiver/register (3-State)
74LVC646A
SO20: plastic small outline package; 20 leads; body width 7.5 mm
SOT163-1
12
1998 Jul 29
Philips Semiconductors
Product specification
Octal bus transceiver/register (3-State)
74LVC646A
SSOP20: plastic shrink small outline package; 20 leads; body width 5.3 mm
SOT339-1
13
1998 Jul 29
Philips Semiconductors
Product specification
Octal bus transceiver/register (3-State)
74LVC646A
TSSOP20: plastic thin shrink small outline package; 20 leads; body width 4.4 mm
SOT360-1
14
1998 Jul 29
Philips Semiconductors
Product specification
Octal bus transceiver/register (3-State)
74LVC646A
NOTES
15
1998 Jul 29
Philips Semiconductors
Product specification
Octal bus transceiver/register (3-State)
74LVC646A
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: 08-98
9397-750-04516
Document order number:
Philips
Semiconductors
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