RD74LVC16245B
16-bit Bus Transceivers with 3-state Outputs
REJ03D0529–0100
Rev.1.00
Apr. 18, 2005
Description
The RD74LVC16245B has sixteen two direction buffers, for the fittest at two direction bus lines with three state
outputs. A direction control input, DIR. When DIR is high, data flows from the A inputs to the B outputs. When DIR
is low, data flows from the B inputs to the A outputs. When enable inputs (G) is high, disables both A and B ports by
placing then in a high impedance. Low voltage and high-speed operation is suitable at the battery drive product (note
type personal computer) and low power consumption extends the life of a battery for long time operation.
Features
•
•
•
•
•
•
V
CC
= 1.65 V to 5.5 V
All inputs V
IH
(Max.) = 5.5 V (@V
CC
= 0 V to 5.5 V)
All outputs V
OUT
(Max.) = 5.5 V (@V
CC
= 0 V or output off state)
Typical V
OL
ground bounce < 0.8 V (@V
CC
= 3.3 V, Ta = 25°C)
Typical V
OH
undershoot > 2.0 V (@V
CC
= 3.3 V, Ta = 25°C)
High output current ±4 mA (@V
CC
= 1.65 V)
±8 mA (@V
CC
= 2.3 V)
±12 mA (@V
CC
= 2.7 V)
±24 mA (@V
CC
= 3.0 V to 5.5 V)
•
Ordering Information
Part Name
RD74LVC16245BTEL
Package Type
TSSOP–48 pin
Package Code
(Previous Code)
PTSP0048KA–A
(TTP–48DBV)
Package
Abbreviation
T
Taping Abbreviation
(Quantity)
EL (1,000 pcs/reel)
Function Table
Inputs
G
L
L
H
H: High level
L: Low level
X: Immaterial
Z: High impedance
DIR
L
H
X
Operation
B data to A bus
A data to B bus
Z
Rev.1.00 Apr. 18, 2005 page 1 of 7
RD74LVC16245B
Pin Arrangement
1DIR 1
1B1 2
1B2 3
GND 4
1B3 5
1B4 6
V
CC
7
1B5 8
1B6 9
GND 10
1B7 11
1B8 12
2B1 13
2B2 14
GND 15
2B3 16
2B4 17
V
CC
18
2B5 19
2B6 20
GND 21
2B7 22
2B8 23
2DIR 24
48 1G
47 1A1
46 1A2
45 GND
44 1A3
43 1A4
42 V
CC
41 1A5
40 1A6
39 GND
38 1A7
37 1A8
36 2A1
35 2A2
34 GND
33 2A3
32 2A4
31 V
CC
30 2A5
29 2A6
28 GND
27 2A7
26 2A8
25 2G
(Top view)
Absolute Maximum Ratings
Item
Supply voltage
Input diode current
Input voltage
Output diode current
Input / output voltage
Output current
V
CC
, GND current / pin
Storage temperature
Symbol
V
CC
I
IK
V
I
I
OK
V
I/O
I
O
I
CC
or I
GND
Tstg
Ratings
–0.5 to 7.0
–50
–0.5 to 7.0
–50
50
–0.5 to V
CC
+0.5
–0.5 to 7.0
±50
100
–65 to 150
mA
mA
°C
V
Unit
V
mA
V
mA
V
O
= –0.5 V
V
O
= V
CC
+0.5 V
Output "H" or "L"
Output "Z" or V
CC
:OFF
V
I
= –0.5 V
Conditions
Note: The absolute maximum ratings are values, which must not individually be exceeded, and furthermore, no two of
which may be realized at the same time.
Rev.1.00 Apr. 18, 2005 page 2 of 7
RD74LVC16245B
Recommended Operating Conditions
Item
Supply voltage
Input / output voltage
Symbol
V
CC
V
I
V
O
Ta
I
OH
Ratings
1.5 to 5.5
1.65 to 5.5
0 to 5.5
0 to V
CC
0 to 5.5
–40 to 85
–4
–8
–12
–24
4
8
12
24
20
10
Unit
V
V
Output "H" or "L"
Output "Z" or V
CC
: OFF
°C
mA
V
CC
= 1.65 V
V
CC
= 2.3 V
V
CC
= 2.7 V
V
CC
= 3.0 V to 5.5 V
V
CC
= 1.65 V
V
CC
= 2.3 V
V
CC
= 2.7 V
V
CC
= 3.0 V to 5.5 V
V
CC
= 1.65 V to 2.7 V
V
CC
= 3.0 V to 5.5 V
Conditions
Data hold
At operation
Operating temperature
Output current
I
OL
mA
Input rise / fall time
*1
t
r
, t
f
ns/V
Notes: 1. This item guarantees maximum limit when one input switches.
Waveform: Refer to test circuit of switching characteristics.
Electrical Characteristics
Item
Input voltage
Symbol
V
IH
V
CC
(V)
1.65 to 1.95
2.3 to 2.7
2.7 to 3.6
4.5 to 5.5
1.65 to 1.95
2.3 to 2.7
2.7 to 3.6
4.5 to 5.5
1.65 to 5.5
1.65
2.3
2.7
3.0
3.0
4.5
1.65 to 5.5
1.65
2.3
2.7
3.0
4.5
0 to 5.5
0
2.7 to 5.5
2.7 to 3.6
2.7 to 5.5
2.7 to 3.6
Ta = –40 to 85°C
Min
Max
V
CC
×0.65
—
1.7
—
2.0
—
—
V
CC
×0.7
—
V
CC
×0.35
—
0.7
—
0.8
—
V
CC
×0.3
V
CC
–0.2
—
1.2
—
1.7
—
2.2
—
2.4
—
2.2
—
3.8
—
—
0.2
—
0.45
—
0.7
—
0.4
—
0.55
—
0.55
—
±5.0
—
±5.0
—
±5.0
—
—
—
±10
10
500
Unit
V
Test Conditions
V
IL
V
Output voltage
V
OH
V
I
OH
= –100 µA
I
OH
= –4 mA
I
OH
= –8 mA
I
OH
= –12 mA
I
OH
= –24 mA
V
OL
V
I
OL
= 100 µA
I
OL
= 4 mA
I
OL
= 8 mA
I
OL
= 12 mA
I
OL
= 24 mA
V
IN
= 5.5 V or GND
V
IN
/ V
OUT
= 5.5 V
V
IN
= V
CC
, GND,
V
OUT
= 5.5 V or GND
V
IN
= 3.6 to 5.5 V
V
IN
= V
CC
or GND
V
IN
= one input at (V
CC
–0.6)V,
other inputs at V
CC
or GND
Input current
Output leak current
Off state output
current
Quiescent supply
current
I
IN
I
OFF
I
OZ
I
CC
∆I
CC
µA
µA
µA
µA
µA
Rev.1.00 Apr. 18, 2005 page 3 of 7
RD74LVC16245B
Switching Characteristics
Ta = –40 to 85°C
Item
Propagation delay time
Symbol
t
PLH
t
PHL
V
CC
(V)
1.8±0.15
2.5±0.2
2.7
3.3±0.3
5.0±0.5
Output enable time
t
ZH
t
ZL
1.8±0.15
2.5±0.2
2.7
3.3±0.3
5.0±0.5
Output disable time
t
HZ
t
LZ
1.8±0.15
2.5±0.2
2.7
3.3±0.3
5.0±0.5
Between output pins skew
*1
From
Unit
ns
(Input)
A or B
To
(Output)
B or A
Min
1.0
1.0
1.0
1.5
1.0
1.0
1.0
1.0
1.5
1.0
1.0
1.0
1.0
1.5
1.0
—
—
—
—
—
—
—
Typ
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
4.0
8.0
Max
12.7
8.3
5.8
5.2
4.5
15.3
10.5
8.0
7.2
6.0
17.0
9.5
8.0
7.2
6.0
—
—
—
1.0
1.0
—
—
ns
G
A or B
ns
G
A or B
t
OSLH
t
OSHL
1.8±0.15
2.5±0.2
2.7
3.3±0.3
5.0±0.5
ns
Input capacitance
Output capacitance
Note:
C
IN
C
O
3.3
3.3
pF
pF
1. This parameter is characterized but not tested.
tos
LH
= | t
PLHm
- t
PLHn
|, tos
HL
= | t
PHLm
- t
PHLn
|
Operating Characteristics
Ta = 25°C
Item
Power dissipation
capacitance
Symbol
C
PD
V
CC
(V)
1.8
2.5
3.3
5.0
Min
Typ
42
43
45
47
Max
Unit
pF
Test Conditions
f = 10 MHz
Rev.1.00 Apr. 18, 2005 page 4 of 7
RD74LVC16245B
Test Circuit
V
CC
V
CC
1G, 2G
See Function Table
Input
Pulse
Generator
Z
out
= 50
Ω
Output
1A1 to 1A8
2A1 to 2A8
1B1 to 1B8
2B1 to 2B8
1DIR, 2DIR
S1
R
L
S2
OPEN
V
TT
C
L
R
L
GND
Symbol
t
PLH
/ t
PHL
t
ZH
/ t
HZ
t
ZL
/ t
LZ
Notes:
1. C
L
includes probe and jig capacitance.
2. S1: Input-Output change switch.
S2
OPEN
GND
V
TT
Waveforms – 1
t
r
90 %
Input
V
ref
10 %
t
PLH
V
ref
90 %
V
ref
10 %
t
PHL
V
OH
Output
V
ref
V
OL
t
f
V
IH
GND
Note: 1. Input waveform: PRR = 10 MHz, Zo = 50
Ω,
duty cycle 50%.
Rev.1.00 Apr. 18, 2005 page 5 of 7
淘e淘
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
