PI74LCX16646(1997) データシートの表示（PDF） - Pericom Semiconductor
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PI74LCX16646 Datasheet PDF : 6 Pages
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PI74LCX16646
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Fast CMOS 3.3V
16-Bit Registered Transceivers
Product Features
• Functionally compatible with FCT3, LVT, and 74
series 16646 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
• 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 in the Company’s advanced 0.6 micron CMOS
technology, achieving industry leading speed grades.
The PI74LCX16646 is a 16-bit non-inverting, bidirectional
registered 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 control (xOE) and direction pins
(xDIR) 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 PI74LCX16646 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
1OE
1DIR
1CLKBA
1SBA
1CLKAB
1SAB
2OE
2DIR
2CLKBA
2SBA
2CLKAB
2SAB
1A0
A REG
D
C
B REG
D
C
2A0
1B0
A REG
D
C
B REG
D
C
2B0
TO 7 OTHER CHANNELS
TO 7 OTHER CHANNELS
1
PS2093A 02/12/97
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