PI74LCX16501A [ETC]
18-Bit Bus Transceiver ; 18位总线收发器\n
| 型号： | PI74LCX16501A |
| 厂家： | 
ETC |
| 描述： | 18-Bit Bus Transceiver
|
| 文件： | 总5页 (文件大小：218K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PI74LCX16501
Fast CMOS 18-Bit Registered Transceivers
Product Description
Product Features
FunctionallycompatiblewithFCT3, LVT, and74series
16501 families of products
Pericom Semiconductors PI74LCX series of logic circuits are
produced using the Companys advanced 0.6 micron CMOS
technology, achieving industry leading speed grades.
Tri-State outputs
ThePI74LCX16501isan18-bitregisteredbustransceiverdesigned
with D-type latches and flip-flops to allow data flow in transparent,
latched, and clocked modes. The Output Enable (OEAB and
OEBA, Latch Enable (LEAB and LEBA) and Clock (CLKAB and
CLKBA) inputs control the data flow in each direction. When
LEAB is HIGH, the device operates in transparent mode for A-to-
B data flow. When LEAB is LOW, the A data is latched if CLKAB
is held at a HIGH or LOW logic level. The A bus data is stored in
the latch/flip-flop on the LOW-to-HIGH transition of CLKAB, if
LEAB is LOW. OEAB performs the output enable function on the
B port. Data flow from B port to A port is similar using OEBA,
LEBA and CLKBA. This high-speed, low-power device offers a
flow-through organization for ease of board layout.
5V Tolerant inputs and outputs
2.0V-3.6V VCC supply operation
Balanced sink and source output drives (24 mA)
Low ground bounce outputs
Supports live insertion
ESD Protection exceeds 2000V, Human Body Model
200V, Machine Model
Packages available:
56-pin240-milwideplasticTSSOP(A)
56-pin300-milwideplasticSSOP(V)
ThePI74LCX16501canbedrivenfromeither3.3Vor5.0Vdevices
allowing this device to be used as a translator in a mixed
3.3V/5.0V system.
Logic Block Diagram
OEAB
CLKBA
LEBA
OEBA
CLKAB
LEAB
A1
C
D
C
B1
D
C
D
C
D
TO 17 OTHER CHANNELS
PS2091A 02/11/97
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PI74LCX16501
18-BIT REGISTERED TRANSCEIVERS
Truth Table(1)
Product Pin Description
Inputs
LEAB CLKAB
Outputs
Pin Name
OEAB
OEBA
LEAB
LEBA
CLKAB
CLKBA
Ax
Description
OEAB
Ax
X
L
Bx
Z
A-to-B Output Enable Input
B-to-A Output Enable Input (Active LOW)
A-to-B Latch Enable Input
B-to-A Latch Enable Input
A-to-B Clock Input
L
H
H
H
H
H
H
X
H
H
L
L
L
L
X
X
X
↑
L
H
L
H
L
B-to-A Clock Input
↑
H
X
X
H
B(2)
B(3)
A-to-B Data Inputs or B-to-A 3-State Outputs
B-to-A Data Inputs or A-to-B 3-State Outputs
Ground
H
L
Bx
GND
Notes:
VCC
Power
1. A-to-B data flow is shown. B-to-A data flow is similar
but uses OEBA, LEBA, and CLKBA.
2. Output level before the indicated steady-state input
conditions were established, provided that CLKAB was
HIGH before LEAB went LOW.
Product Pin Configuration
3. Output level before the indicated steady-state input
conditions were established.
4. H = High Voltage Level
1
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
OEAB
LEAB
A0
GND
A1
A2
VCC
A3
A4
A5
GND
A6
A7
GND
CLKAB
B0
GND
B1
B2
VCC
B3
B4
B5
GND
B6
B7
2
3
L = Low Voltage Level
Z = High Impedance
↑ = LOW-to-HIGH Transition
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
56-PIN
V56
A56
A8
A9
B8
B9
A10
A11
GND
A12
A13
A14
VCC
A15
A16
GND
A17
OEBA
LEBA
B10
B11
GND
B12
B13
B14
VCC
B15
B16
GND
B17
CLKBA
GND
PS2091A 02/11/97
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PI74LCX16501
18-BIT REGISTERED TRANSCEIVERS
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
Note:
Storage Temperature ............................................................. 65°C to +150°C
Ambient Temperature with Power Applied ............................ 40°C to +85°C
Supply Voltage to Ground Potential (Inputs & Vcc Only) .... 0.5V to +7.0V
Supply Voltage to Ground Potential (Outputs & D/O Only) . 0.5V to +7.0V
DC Input Voltage .................................................................... 0.5V to +7.0V
DC Output Current ............................................................................... 120 mA
Power Dissipation .................................................................................... 1.0W
Stresses greater than those listed under MAXIMUM
RATINGS may cause permanent damage to the de-
vice. This is a stress rating only and functional opera-
tion of the device at these or any other conditions
above those indicated in the operational sections of
thisspecificationisnotimplied. Exposuretoabsolute
maximum rating conditions for extended periods
may affect reliability.
Recommended Operating Conditions
Symbol
Parameter
Min.
2.0
1.5
0
Max.
3.6
Units
VCC
Supply Voltage
Operating
Data Retention
3.6
VI
Input Voltage
5.5
V
VO
Output Voltage
HIGH or LOW State
TRI-State
0
VCC
5.5
0
IOH/IOL
Output Current
VCC = 3.0V-3.6V
VCC = 2.7V
±24
±12
+85
10
mA
TA
Free-Air Operating Temperature
Input Edge Rate
−40
°C
V = 0.8V-2.0V, VCC = 3.0V
0
ns/V
∆t/∆V
PS2091A 02/11/97
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PI74LCX16501
18-BIT REGISTERED TRANSCEIVERS
DC Electrical Characteristics (Over the Operating Range, TA = −40°C to +85°C, VCC = 2.7V to 3.6V)
Parameters Description
Test Conditions(1)
Min.
2.0
Typ(2)
—
Max.
—
Units
V
IH
IL
OH
Input HIGH Voltage
Input LOW Voltage
Output HIGH Voltage
Guaranteed Logic HIGH Level
Guaranteed Logic LOW Level
V
—
—
0.8
—
V
V
V
V
CC = 2.7-3.6
I
I
I
I
I
I
I
I
OH = –0.1mA
OH = –12mA
OH = –18mA
OH = –24mA
OL = 0.1mA
OL = 12mA
OL = 16mA
OL = 24mA
V
CC-0.2
2.2
2.4
2.2
—
—
CC = 2.7
—
—
CC = 3.0
—
—
—
—
V
VOL
Output LOW Voltage
V
V
V
CC = 2.7-3.6
—
0.2
0.4
0.4
0.55
−1.2
±5
CC = 2.7
—
—
CC = 3.0
—
—
—
—
V
IK
Clamp Diode Voltage
Input Leakage Current
Tri-State Output Leakage
VCC = Min., IIN = –18mA
—
−0.7
—
I
I
0 ≤ V
I
≤ 5.5V
≤ 5.5V
Vcc = 2.7-3.6
—
IOZ
0 ≤ V
O
V
CC = 2.7-3.6
—
—
±5
V
V
V
I
= VIH or VIL
I
OFF
Power Down Disable
CC = 0V, VIN or VOUT ≤ 5.5V
—
—
10
10
µA
I
CC
Quiescent Power Supply
Current
CC = Max.
CC = Max.
V
or VCC
IN = GND
0.1
Quiescent Power Supply
Current
V
V
IN = VCC – 0.6V(3)
500
∆
ICC
TTL Inputs HIGH
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at VCC = 3.3V, +25°C ambient.
3. Per TTL driven input; all other inputs at VCC or GND.
Capacitance
Parameters Description
Test Conditions
CC = Open, V
CC = 3.3V, V
CC = 3.3V, V
Typ.
7
Units
C
IN
OUT
PD
Input Capacitance
V
I
= 0V or VCC
C
Output Capacitance
V
I
= 0V or VCC
8
pF
C
Power Dissipation Capacitance
V
I
= 0V or VCC, F = 10 MHz
20
PS2091A 02/11/97
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PI74LCX16501
18-BIT REGISTERED TRANSCEIVERS
Switching Characteristics over Operating Range
VCC = 3.3V ± 0.3V
VCC = 2.7V
Parameters Description
fmax Maximum Clock Frequency
Conditions
Min.
170
1.5
Max.
Min.
Max.
Units
CL
= 50 pF
MHz
RL
= 500Ω
t
PHL
Propagation Delay
Bus to Bus
6.0
6.5
6.5
7.5
6.0
1.5
1.5
1.5
1.5
1.5
7.0
7.5
7.5
8.5
7.0
tPLH
t
PHL
Propagation Delay
Clock to Bus
1.5
1.5
1.5
1.5
tPLH
t
PHL
Propagation Delay
LE to Bus
tPLH
tPZL
Output Enable Time
tPZH
ns
tPLZ
Output Disable Time
tPHZ
t
S
Setup Time
Hold Time
Pulse Width
2.5
1.5
3.0
2.5
1.5
3.0
tH
tW
tSK(O)
Output to Output Skew(1)
1.0
Note:
1. Skew between any two outputs, of the same package, switching in the same direction.
Dynamic Switching Characteristics (TA = +25°C)
Parameters Description
Test Conditions(1)
CC = 3.3V, C = 50pF
Typ.
Units
VOLP
Dynamic LOW Peak Voltage
V
L
V
IH = 3.3V, VIL = 0V
0.8
V
VOLV
Dynamic LOW Valley Voltage
VCC = 3.3V, C = 50pF
L
VIH = 3.3V, VIL = 0V
Note:
1. Measured with n1 outputs switching from High-to-Low or Low-to-High. The remaining output is measured in the LOW state.
Pericom Semiconductor Corporation
2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com
PS2091A 02/11/97
5
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