ETC PI74LPT16652

PI74LPT16652
16-BIT
REGISTERED
TRANSCEIVERS
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012
PI74LPT16652
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012
Fast CMOS 16-Bit Registered Transceivers
1
2
Product Features
Product Description
• Compatible with LCX™ and LVT™ families of products
• Supports 5V Tolerant Mixed Signal Mode Operation
– Input can be 3V or 5V
– Output can be 3V or connected to 5V bus
• Advanced Low Power CMOS Operation
• Excellent output drive capability:
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
• Packages available:
– 56-pin 240 mil wide plastic TSSOP (A)
– 56-pin 300 mil wide plastic SSOP (V)
Pericom Semiconductor's PI74FCT series of logic circuits are
produced using the Company’s advanced 0.6 micron CMOS
technology, achieving industry leading speed grades.
The PI74LPT16652 is 16-bit registered transceivers organized as
two independent 8-bit bus transceivers designed with 3-state Dtype flip-flops and control circuitry arranged for multiplexed
transmission of data directly from the data bus or from the internal
storage registers. Each 8-bit transceiver utilizes the enable controls
(xOEAB and x OEBA) to control the transceiver functions. The
Select (xSAB and xSBA) control pins are used to select either realtime or stored data transfer. The circuitry used for select control will
eliminate the typical decoding glitch that occurs in a multiplexer
during the transition between real-time and stored data. A low input
level selects real-time data and a high selects stored data.
The PI74LPT16652 can be driven from either 3.3V or 5.0V devices
allowing this device to be used as a translator in a mixed
3.3/5.0V system.
3
4
5
6
7
Logic Block Diagram
8
1OEAB
2OEAB
1OEBA
2OEBA
1CLKBA
2CLKBA
1SBA
2SBA
1CLKAB
2CLKAB
1SAB
2SAB
9
10
B REG
B REG
D
D
C
C
1 A0
11
12
2A0
A REG
A REG
1B0
D
2B0
13
D
C
C
14
TO 7 OTHER CHANNELS
TO 7 OTHER CHANNELS
15
1
PS2074A 01/16/97
PI74LPT16652
16-BIT
REGISTERED
TRANSCEIVERS
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012
Truth Table
DATA I/O(2)
Inputs
Function/Operation
Isolation
Store A and B Data
Store A, Hold B
Store A in Both Registers
Hold A, Store B
Store B in Both Registers
Real Time B Data to A Bus
Stored B Data to A Bus
Real Time A Data to B Bus
Stored A Data to B Bus
Stored A Data to B Bus and
Stored B Data to A Bus
1.
2.
xOEAB
L
L
X
H
L
L
L
L
H
H
H
XOEBA
H
H
H
H
X
L
L
L
H
H
L
XCLKAB
XCLKBA
XSAB
XSBA
H or L
↑
↑
↑
H or L
↑
X
X
X
H or L
H or L
H or L
↑
H or L
↑
↑
↑
X
H or L
X
X
H or L
X
X
X
X(2)
X
X
X
X
L
H
H
X
X
X
X
X
X(2)
L
H
X
X
H
XAX
Input
XBX
Input
Input
Unspecified(1)
Input
Output
(1)
Unspecified
Input
Output
Input
Output
Input
Input
Output
Output
Output
The data output functions may be enabled or disabled by various signals at the xOEAB or xOEBA inputs. Data
input functions are always enabled, i.e., data at the bus pins will be stored on every low-to-high transition
on the clock inputs.
Select control = L: clocks can occur simultaneously.
Select control = H: clocks must be staggered in order to load both registers.
H = High Voltage Level; L = Low Voltage Level; X = Don't Care; ↑ = LOW-to-HIGH transition
Product Pin Description
Product Pin Configuration
1OEAB
1CLKAB
1SAB
GND
1A0
1A1
VCC
1A2
1A3
1A4
GND
1A5
1A6
1A7
2A0
2A1
2A2
GND
2A3
2A4
2A5
VCC
2A6
2A7
GND
2SAB
2CLKAB
2OEAB
1
2
56
55
3
4
54
53
5
6
7
8
52
51
50
1 B0
49
48
47
1 B2
9
10
11
12
13
14
15
16
17
18
19
46
45
56-PIN 44
V56 43
A56 42
1OEBA
1CLKBA
1SBA
xBx
GND
xCLKAB, xCLKBA
xSAB, xSBA
xOEAB, xOEBA
GND
VCC
1 B1
VCC
1 B3
1 B4
GND
Description
Data Register A Inputs
Data Register B Outputs
Data Register B Inputs
Data Register A Outputs
Clock Pulse Inputs
Output Data Source Select Inputs
Output Enable Inputs
Ground
Power
1 B5
1 B6
1 B7
2 B0
41
40
39
38
37
2 B1
2 B5
22
23
24
36
35
34
33
25
26
27
28
32
31
30
29
20
21
Pin Name
xAx
2 B2
GND
2 B3
2 B4
VCC
2 B6
2 B7
GND
2SBA
2CLKBA
2OEBA
2
PS2074A 01/16/97
PI74LPT16652
16-BIT
REGISTERED
TRANSCEIVERS
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012
1
REAL-TIME TRANSFER
BUS A TO B
REAL-TIME TRANSFER
BUS B TO A
2
BUS
BUS
BUS
BUS
A
B
A
B
3
4
xOEAB xOEBA xCLKAB xCLKBA xSAB xSBA
H
H
X
X
L
X
xOEAB xOEBA xCLKAB xCLKBA xSAB xSBA
L
L
X
X
X
L
STORAGE FROM
A AND/OR B
TRANSFER STORES
DATA TO A AND/OR B
BUS
BUS
BUS
BUS
A
B
A
B
5
6
7
8
9
xOEAB
X
L
L
xOEBA xCLKAB xCLKBA xSAB xSBA
H
↑
X
X
X
X
X
↑
X
X
H
↑
↑
X
X
xOEAB xOEBA xCLKAB xCLKBA xSAB xSBA
H
L
H or L
H or L
H
H
10
11
12
13
14
15
3
PS2074A 01/16/97
PI74LPT16652
16-BIT
REGISTERED
TRANSCEIVERS
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
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
Note:
Stresses greater than those listed under MAXIMUM
RATINGS may cause permanent damage to the
device. This is a stress rating only and functional
operation of the device at these or any other conditions above those indicated in the operational
sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability.
DC Electrical Characteristics (Over the Operating Range, TA = –40°C to +85°C, VCC = 2.7V to 3.6V)
Parameters
VIH
Description
IOZH
IOZL
VIK
IODH
IODL
VOH
Input HIGH Voltage (Input pins)
Input HIGH Voltage (I/O pins)
Input LOW Voltage
(Input and I/O pins)
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
VOL
Output LOW Voltage
IOS
IOFF
VH
Short Circuit Current(4)
Power Down Disable
Input Hysteresis
VIL
IIH
IIL
Test Conditions(1)
Guaranteed Logic HIGH Level
Guaranteed Logic LOW Level
Min.
Typ(2)
Max.
Units
2.2
2.0
–0.5
—
—
—
5.5
5.5
0.8
V
V
V
—
—
—
—
—
—
–0.7
–60
90
—
3.0
3.0
—
—
0.2
0.3
–85
—
150
±1
±1
±1
±1
±1
±1
–1.2
–110
200
—
—
—
—
0.2
0.4
0.5
–240
±100
—
µA
µA
µA
µA
µA
µA
V
mA
mA
V
V
V
VCC = Max.
VIN = 5.5V
—
VCC = Max.
VIN = VCC
—
VCC = Max.
VIN = GND
—
VCC = Max.
VIN = GND
—
VCC = Max.
VOUT = 5.5V
—
VCC = Max.
VOUT = GND
—
VCC = Min., IIN = –18 mA
—
VCC = 3.3V, VIN = VIH or VIL, VO = 1.5V(3)
–36
(3)
VCC = 3.3V, VIN = VIH or VIL, VO = 1.5V
50
VCC = Min.
IOH = –0.1 mA Vcc-0.2
VIN = VIH or VIL
IOH = –3 mA
2.4
VCC = 3.0V,
IOH = –8 mA
2.4(5)
VIN = VIH or VIL
IOH = –24 mA
2.0
VCC = Min.
IOL = 0.1 mA
—
VIN = VIH or VIL
IOL = 16 mA
—
IOL = 24 mA
—
VCC = Max.(3), VOUT = GND
–60
VCC = 0V, VIN or VOUT ≤ 4.5V
—
—
V
V
V
mA
µA
mV
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.
4
PS2074A 01/16/97
PI74LPT16652
16-BIT
REGISTERED
TRANSCEIVERS
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012
Power Supply Characteristics
Parameters Description
Test Conditions(1)
Min.
Typ(2)
Max.
Units
ICC
Quiescent Power Supply Current
VCC = Max.
VIN = GND or VCC
0.1
10
µA
∆ICC
Quiescent Power Supply Current
TTL Inputs HIGH
VCC = Max.
VIN = VCC – 0.6V(3)
2.0
30
µA
ICCD
Dynamic Power Supply(4)
VCC = Max.,
Outputs Open
XOE = GND
One Bit Toggling
50% Duty Cycle
VIN = VCC
VIN = GND
50
75
µA/
MHz
VCC = Max.,
Outputs Open
fI = 10 MHZ
50% Duty Cycle
XOE = GND
One Bit Toggling
VIN = VCC – 0.6V
VIN = GND
0.6
VCC = Max.,
Outputs Open
fI = 2.5 MHZ
50% Duty Cycle
XOE = GND
16 Bits Toggling
VIN = VCC – 0.6V
VIN = GND
IC
Total Power Supply
Current(6)
2.3
mA
1
2
3
4
5
2.1
4.7(5)
6
7
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.
8
9
10
11
12
13
14
15
5
PS2074A 01/16/97
PI74LPT16652
16-BIT
REGISTERED
TRANSCEIVERS
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012
Switching Characteristics over Operating Range(1)
Parameters
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
tPLH
tPHL
tPLH
tPHL
tSU
tH
tW
tSK(o)
Description
Conditions
Propagation Delay
Bus to Bus
Output Enable Time
XOEAB or XOEBA to Bus
Output Disable Time(4)
XOEAB or XOEBA to Bus
Propagation Delay
Clock to Bus
Propagation Delay
xSBA or xSAB to Bus
Setup Time HIGH or
LOW, BUS to Clock
Hold Time HIGH or
LOW, Bus to Clock
Clock Pulse Width(4)
HIGH or LOW
Output Skew(5)
CL = 50 pF
RL = 500 Ω
(2)
LPT16652
LPT16652A
Com.
Com.
LPT16652C
Com.
Min
Max
Min
Max
Min
Max
Unit
2.0
9.0
2.0
6.3
1.5
5.4
ns
2.0
14.0
2.0
9.8
1.5
7.8
ns
2.0
9.0
2.0
6.3
1.5
6.3
ns
2.0
9.0
2.0
6.3
1.5
5.7
ns
2.0
11.0
2.0
7.7
1.5
6.2
ns
4.0
—
2.0
—
2.0
—
ns
2.0
—
1.5
—
1.5
—
ns
6.0
—
5.0
—
5.0
—
ns
—
0.5
—
0.5
—
0.5
ns
(3)
(3)
(3)
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 wave forms.
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)
CIN
COUT
Description
Test Conditions
Input Capacitance
Output Capacitance
VIN = 0V
VOUT = 0V
Typ.
Max.
Units
4.5
5.5
6
8
pF
pF
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
6
PS2074A 01/16/97