PI74LCX646 Datasheet, PDF (1/5 Pages) Pericom Semiconductor Corporation – Fast CMOS 3.3V 8-Bit Registered Transceiver

PI74LCX646
PI74LCX652
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Fast CMOS 3.3V 8-Bit Registered Transceiver
Product Features
• Functionally compatible with FCT3, LVT, and
74 series 646 and 652 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:
– 24-pin 209-mil wide plastic SSOP (H)
– 24-pin 173-mil wide plastic TSSOP (L)
– 24-pin 150-mil wide plastic QSOP (Q)
– 24-pin 300-mil wide plastic SOIC (S)
Logic Block Diagram
Product Description
Pericom Semiconductor’s PI74LCX series of logic circuits are pro-
duced in the Company’s advanced 0.6 micron CMOS technology,
achieving industry leading speed grades.
The PI74LCX646 and PI74LCX652 are designed with a bus
transceiver 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. The PI74LCX652 utilizes
GAB and GBA signals to control the transceiver functions. The
PI74LCX646 uses the enable control (G) and direction pins (DIR)
to control the transceiver functions. SAB and SBA 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 PI74LCX646 and PI74LCX652 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.
PI74LPT646
ONLY
G
PI74LPT652 ONLY
GBA
GAB
DIR
CPBA
SBA
CPAB
SAB
1 OR 8 CHANNELS
A REG
A0
0D
C0
B REG
0D
C0
B0
TO 7 OTHER CHANNELS
1
PS2104A 02/07/97