PI74LPT16501V [ETC]
18-Bit Bus Transceiver ; 18位总线收发器\n
| 型号： | PI74LPT16501V |
| 厂家： | 
ETC |
| 描述： | 18-Bit Bus Transceiver
|
| 文件： | 总5页 (文件大小：248K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PI74LPT16501
1
2
Fast CMOS 18-Bit Registered Transceivers
Product Features
Product Description
CompatiblewithLCXandLVTfamiliesofproducts
Pericom Semiconductors PI74LPT series of logic circuits are
produced using the Companys advanced 0.6 micron CMOS
technology, achieving industry leading speed grades.
Supports 5V Tolerant Mixed Signal Mode Operation
Input can be 3V or 5V
3
Output can be 3V or connected to 5V bus
ThePI74LPT16501isan18-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.
Advanced Low Power CMOS Operation
Excellent output drive capability:
4
5
Balanced drives (24 mA sink and source)
Pin compatible with industry standard double-density
pinouts
Low ground bounce outputs
Hysteresis on all inputs
Industrial operating temperature range: 40°C to +85°C
Multiple center pins and distributed Vcc/GND pins
minimize switching noise
6
Packages available:
ThePI74LPT16501canbedrivenfromeither3.3Vor5.0Vdevices
allowing this device to be used as a translator in a mixed
3.3V/5.0V system.
56-pin240milwideplasticTSSOP(A)
56-pin300milwideplasticSSOP(V)
7
8
Logic Block Diagram
OEAB
9
CLKBA
LEBA
10
11
12
13
14
15
OEBA
CLKAB
LEAB
C
C
B1
A
1
D
D
C
D
C
D
TO 17 OTHER CHANNELS
PS2071A 01/16/97
1
PI74LPT16501
18-BIT REGISTERED TRANSCEIVERS
Truth Table(1,4)
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
↑
H
X
X
H
B-to-A Clock Input
L
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
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 condi-
tions were established.
3. Output level before the indicated steady-state input condi-
tions were established, provided that CLKAB was HIGH
before LEAB went LOW.
Product Pin Configuration
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
CLKAB
B0
4. H = High Voltage Level
2
L = Low Voltage Level
Z = High Impedance
↑ = LOW-to-HIGH Transition
3
4
GND
A1
GND
B1
5
A2
6
B2
VCC
A3
VCC
B3
7
8
A4
B4
9
A5
B5
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
GND
A6
GND
B6
56-PIN
V56
A56
A7
B7
A8
B8
A9
B9
A10
A11
GND
A12
B10
B11
GND
B12
A13
A14
B13
B14
VCC
VCC
A15
A16
B15
B16
GND
A17
GND
B17
OEBA
LEBA
CLKBA
GND
PS2071A 01/16/97
2
PI74LPT16501
18-BIT REGISTERED TRANSCEIVERS
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
1
2
Note:
Storage Temperature............................................................. 55°C to +125°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
maximumratingconditionsforextendedperiodsmay
affect reliability.
3
4
5
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. Typ(2) Max. Units
VIH
Input HIGH Voltage (Input pins)
Input HIGH Voltage (I/O pins)
Input LOW Voltage
Guaranteed Logic HIGH Level
2.2
2.0
0.5
5.5
5.5
0.8
V
V
V
VIL
IIH
IIL
Guaranteed Logic LOW Level
(Input and I/O pins)
6
Input HIGH Current (Input pins)
Input HIGH Current (I/O pins)
Input LOW Current (Input pins)
Input LOW Current (I/O pins)
High Impedance Output Current
(3-State Output pins)
Clamp Diode Voltage
Output HIGH Current
Output LOW Current
Output HIGH Voltage
VCC = Max.
VIN = 5.5V
±1
±1
±1
±1
±1
µA
µA
µA
µA
µA
µA
V
mA
mA
V
VCC = Max.
VIN = VCC
VCC = Max.
VCC = Max.
VCC = Max.
VCC = Max.
VIN = GND
VIN = GND
VOUT = 5.5V
VOUT = GND
7
IOZH
IOZL
VIK
IODH
IODL
VOH
±1
VCC = Min., IIN = 18 mA
0.7
60
90
1.2
110
200
8
VCC = 3.3V, VIN = VIH or VIL, VO = 1.5V(3) 36
VCC = 3.3V, VIN = VIH or VIL, VO = 1.5V(3)
50
IOH = 0.1 mA Vcc-0.2
VCC = Min.
9
VIN = VIH or VIL
VCC = 3.0V,
VIN = VIH or VIL
VCC = Min.
VIN = VIH or VIL
IOH = 3 mA
IOH = 8 mA
IOH = 24 mA
IOL = 0.1 mA
IOL = 16 mA
IOL = 24 mA
2.4
2.4(5)
2.0
3.0
3.0
V
V
10
11
12
13
14
15
VOL
Output LOW Voltage
0.2
0.4
0.5
240
±100
V
V
V
mA
µA
mV
0.2
0.3
85
IOS
IOFF
VH
Short Circuit Current(4)
Power Down Disable
Input Hysteresis
VCC = Max.(3), VOUT = GND
VCC = 0V, VIN or VOUT ≤ 4.5V
60
150
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 and maximum loading.
3. Not more than one output should be shorted at one time. Duration of the test should not exceed one second.
4. This parameter is guaranteed but not tested.
5. VOH = VCC 0.6V at rated current.
PS2071A 01/16/97
3
PI74LPT16501
18-BIT REGISTERED TRANSCEIVERS
Power Supply Characteristics
Parameters Description
Test Conditions(1)
VCC = Max.
Min. Typ(2) Max. Units
ICC
Quiescent Power Supply Current
VIN = GND or VCC
VIN = VCC 0.6V(3)
0.1
2.0
10
30
µA
µA
∆ICC
Quiescent Power Supply Current
TTL Inputs HIGH
VCC = Max.
ICCD
Dynamic Power Supply(4)
VCC = Max.,
VIN = VCC
50
75
µA/
Outputs Open
XOE = GND
VIN = GND
MHz
One Bit Toggling
50% Duty Cycle
IC
Total Power Supply
Current(6)
VCC = Max.,
Outputs Open
fI = 10 MHZ
VIN = VCC 0.6V
VIN = GND
0.6
2.3
mA
50% Duty Cycle
XOE = GND
One Bit Toggling
VCC = Max.,
Outputs Open
fI = 2.5 MHZ
50% Duty Cycle
XOE = GND
VIN = VCC 0.6V
VIN = GND
2.1
4.7(5)
16 Bits Toggling
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device.
2. Typical values are at Vcc = 3.3V, +25°C ambient.
3. Per TTL driven input; all other inputs at Vcc or GND.
4. This parameter is not directly testable, but is derived for use in Total Power Supply Calculations.
5. Values for these conditions are examples of the Icc formula. These limits are guaranteed but not tested.
6. IC =IQUIESCENT + IINPUTS + IDYNAMIC
IC = ICC + ∆ICC DHNT + ICCD (fCP/2 + fINI)
ICC = Quiescent Current (ICCL, ICCH and ICCZ)
∆ICC = Power Supply Current for a TTL High Input
DH = Duty Cycle for TTL Inputs High
NT = Number of TTL Inputs at DH
ICCD = Dynamic Current Caused by an Input Transition Pair (HLH or LHL)
fCP = Clock Frequency for Register Devices (Zero for Non-Register Devices)
NCP = Number of Clock Inputs at fCP
fI = Input Frequency
NI = Number of Inputs at fI
All currents are in milliamps and all frequencies are in megahertz.
PS2071A 01/16/97
4
PI74LPT16501
18-BIT REGISTERED TRANSCEIVERS
PI74LPT16501 Switching Characteristics over Operating Range(1)
LPT16501
Com.
LPT16501A
Com.
LPT16501C
1
2
Com. Preliminary
Parameters
Description
Conditions(2)
Min(3)
Max
100
6.5
Min(3)
Max
Min(3)
Max
150
4.6
Unit
MHz
ns
t
MAX
CLKAB or CLKBA frequency
Propagation Delay
C
L
L
= 50 pF
= 500
150
5.1
t
t
PLH
PHL
R
Ω
1.5
1.5
1.5
A
X
to B
Propagation Delay
LEBA to A , LEAB to B
Propagation Delay
CLKBA to A , CLKAB to B
Output Enable Time
OEBA to A , OEAB to B
Output Disable Time(4)
OEBA to A , OEAB to B
X
or A
X
to B
X
3
t
t
PLH
PHL
1.5
1.5
1.5
1.5
4.0
0
7.5
8.0
8.0
7.5
1.5
1.5
1.5
1.5
3.0
0
5.6
5.6
6.0
5.6
1.5
1.5
1.5
1.5
3.0
0
5.3
5.3
5.6
5.2
ns
ns
ns
ns
ns
ns
X
X
t
t
PLH
PHL
X
X
4
5
t
t
PZH
PZL
X
X
X
t
t
PHZ
PLZ
X
t
t
t
SU
Setup Time HIGH or LOW
Ax to CLKAB, Bx to CLKBA
6
H
Hold Time HIGH or LOW
Ax to CLKAB, Bx to CLKBA
SU
Setup Time
Clock HIGH
4.0
1.5
3.0
1.5
3.0
1.5
ns
ns
HIGH or LOW
Ax to LEAB,
Bx to LEBA
7
Clock LOW
t
t
t
t
H
Hold Time HIGH or LOW
Ax to LEAB, Bx to LEBA
1.5
3.0
3.0
0.5
1.5
3.0
3.0
0.5
1.5
3.0
3.0
0.5
ns
ns
ns
ns
8
W
W
LEAB or LEBA Pulse Width
HIGH(4)
9
CLKAB or CLKBA Pulse Width
HIGH or LOW(4)
10
11
12
13
14
15
SK
(
O)
Output Skew(5)
Notes:
1. Propagation Delays and Enable/Disable times are with Vcc = 3.3V ±0.3V, normal range. For Vcc = 2.7V, extended range, all
Propagation Delays and Enable/Disable times should be degraded by 20%.
2. See test circuit and waveforms.
3. Minimum limits are guaranteed but not tested on Propagation Delays.
4. This parameter is guaranteed but not production tested.
5. Skew between any two outputs, of the same package, switching in the same direction. This parameter is guaranteed by design.
Capacitance (TA = 25°C, f = 1 MHz)
Parameters(1)
Description
Test Conditions
Typ.
Max.
Units
CIN
Input Capacitance
Output Capacitance
VIN = 0V
4.5
5.5
6
8
pF
pF
COUT
VOUT = 0V
Note:
1. This parameter is determined by device characterization but is not production tested.
Pericom Semiconductor Corporation
2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com
PS2071A 01/16/97
5
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