74LCX32646 Datasheet, PDF (1/11 Pages) Fairchild Semiconductor – Low Voltage 32-Bit Transceiver/Register with 5V Tolerant Inputs and Outputs (Preliminary)

Preliminary
August 2001
Revised August 2001
74LCX32646
Low Voltage 32-Bit Transceiver/Register
with 5V Tolerant Inputs and Outputs (Preliminary)
General Description
The LCX32646 contains thirty-two non-inverting bidirec-
tional registered bus transceivers with 3-STATE outputs,
providing multiplexed transmission of data directly from the
input bus or from the internal storage registers. Each byte
has separate control inputs which can be shorted together
for full 32-bit operation.The DIR_n inputs determine the
direction of data flow through the device. The CPAB_n and
CPBA_n inputs load data into the registers on the LOW-to-
HIGH transition (see Functional Description).
The LCX32646 is designed for low voltage (2.5V or 3.3V)
V_CC applications with capability of interfacing to a 5V signal
environment.
The LCX32646 is fabricated with an advanced CMOS tech-
nology to achieve high speed operation while maintaining
CMOS low power dissipation.
Features
s 5V tolerant inputs and outputs
s 2.3V–3.6V V_CC specifications provided
s 5.2 ns t_PD max (V_CC = 3.3V), 20 µA I_CC max
s Power down high impedance inputs and outputs
s Supports live insertion/withdrawal (Note 1)
s ±24 mA Output Drive (V_CC = 3.0V)
s Implements patented noise/EMI reduction circuitry
s Latch-up performance exceeds 500 mA
s ESD performance:
Human Body Model > 2000V
Machine Model > 200V
s Packaged in plastic Fine-Pitch Ball Grid Array (FBGA)
(Preliminary)
Note 1: To ensure the high-impedance state during power up or down, OE
should be tied to V_CC through a pull-up resistor: the minimum value or the
resistor is determined by the current-sourcing capability of the driver.
Ordering Code:
Order Number Package Number
Package Description
74LCX32646GX
(Note 2)
BGA114A
114-Ball Fine-Pitch Ball Grid Array (FBGA), JEDEC MO-205, 5.5mm Wide
(Preliminary) [TAPE and REEL]
Note 2: BGA package available in Tape and Reel only.
© 2001 Fairchild Semiconductor Corporation DS500635
www.fairchildsemi.com