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Part: PI74LCX16652A
Category:
Logic
Description: 16-Bit Registered Transceiver
Company: Pericom Semiconductor Corporation
Datasheet: Download PI74LCX16652A datasheet File size : 31 kB
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Datasheet text preview:
PI74LCX16652
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
Fast CMOS 16-Bit Registered Transceivers
Product Features
· Functionally compatible with FCT3, LVT, and 74 series 16652 families of products · Tri-State outputs · 5V Tolerant inputs and outputs · 2.0V-3.6V VCC supply operation · Balanced sink and source output drives (24 mA) · Low ground bounce outputs · Power Down High Impedance inputs and outputs · Supports live insertion · ESD Protection exceeds 2000V, Human Body Model 200V, Machine Model · Packages available: 56-pin 240-mil wide plastic TSSOP (A) 56-pin 300-mil wide plastic SSOP (V)
Product Description
Pericom Semiconductor's PI74LCX series of logic circuits are produced using the Company's advanced 0.6 micron CMOS technology, achieving industry leading speed grades. The PI74LCX16652 is 16-bit non-inverting, bidirectional bus transceiver organized as two independent 8-bit bus transceivers designed with 3-state D-type 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 real-time 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 PI74LCX16652 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.
Logic Block Diagram
1OEAB
2OEAB
1OEBA
2OEBA
1CLKBA 1SBA
2CLKBA 2SBA
1CLKAB 1SAB
2CLKAB 2SAB
B REG D C
B REG D C
1A0
2A0
A REG D C
1B0
A REG D C
2B0
TO 7 OTHER CHANNELS
TO 7 OTHER CHANNELS
1
PS2094B
09/20/02
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74LCX16652 16-Bit Registered Transceivers
Truth Table(1)
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 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 H or L H or L X X X H or L H or L xCLKBA H or L H or L X H or L X X H or L xSAB X X X X(2) X X X X L H H xSBA X X X X X X(2) L H X X H xAx Input Input Input Unspecified(1) Output Output Input Output Data I/O(2) xBx Input Unspecified(1) Output Input Input Input Output Output
Notes: 1. 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. 2. 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 Configuration
1OEAB 1CLKAB 1SAB
Product Pin Description
Pin Name De s cription 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
56 55 54 53 52 51 50 49 48 47 46
1OEBA 1CLKBA 1SBA
1 2 3 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
XAX
GND
1A0 1A1
GND
1B0 1B1
XBX
VCC
1A2 1A3 1A4
VCC
1B2 1B3 1B4
xCLKAB, xCLKBA SAB, SBA
XO EAB, XO EBA
GND
1A5 1A6 1A7 2A0 2A1 2A2
GND
1B5 1B6 1B7 2B0 2B1 2B2
56-PIN V56 A56
45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29
GND VCC
GND
2A3 2A4 2A5
GND
2B3 2B4 2B5
VCC
2A6 2A7
VCC
2B6 2B7
GND
2SAB 2CLKAB 2OEAB
GND
2SAB 2CLKBA 2OEBA
2
PS2094B
09/20/02
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74LCX16652 16-Bit Registered Transceivers
REAL-TIME TRANSFER BUS B TO A
REAL-TIME TRANSFER BUS A TO B
BUS A
BUS B
BUS A
BUS B
xOEAB xOEBA xCLKAB xCLKBA xSAB xSBA L L X X X L
xOEAB xOEBA xCLKAB xCLKBA xSAB xSBA H H X X L X
STORAGE FROM A AND/OR B
TRANSFER STORES DATA TO A AND/OR B
BUS A
BUS B
BUS A
BUS B
xOEAB X L L
xOEBA xCLKAB xCLKBA H X X X H
xSAB xSBA X X X X X X
xOEAB xOEBA xCLKAB xCLKBA xSAB xSBA H L H or L H or L H H
3
PS2094B
09/20/02
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