74ALVC16721 Low Voltage 20-Bit D-Type Flip-Flops with 3.6V Tolerant Inputs and Outputs
October 2001
Revised October 2001
74ALVC16721
Low Voltage 20-Bit D-Type Flip-Flops
with 3.6V Tolerant Inputs and Outputs
General Description
The ALVC16721 contains twenty non-inverting D-type
flip-flops with 3-STATE outputs and is intended for bus ori-
ented applications.
The 74ALVC16721 is designed for low voltage (1.65V to
3.6V) V
CC
applications with I/O compatibility up to 3.6V.
The 74ALVC16721 is fabricated with an advanced CMOS
technology to achieve high speed operation while maintain-
ing low CMOS power dissipation.
Features
s
1.8V鈥?.6V V
CC
supply operation
s
3.6V tolerant inputs and outputs
s
t
PD
(CLK to O
n
)
4.0 ns max for 3.0V to 3.6V V
CC
4.9 ns max for 2.3V to 2.7V V
CC
8.8 ns max for 1.65V to 1.95V V
CC
s
Power-off high impedance inputs and outputs
s
Supports live insertion and withdrawal (Note 1)
s
Uses patented noise/EMI reduction circuitry
s
Latchup conforms to JEDEC JED78
s
ESD performance:
Human body model
>
2000V
Machine model
>
200V
Note 1:
To ensure the high-impedance state during power up or power
down, OE should be tied to V
CC
through a pull-up resistor; the minimum
value of the resistor is determined by the current-sourcing capability of the
driver.
Ordering Code:
Order Number
74ALVC16721MTD
Package Number
MTD56
Package Description
56-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide
Device also available in Tape and Reel. Specify by appending suffix letter 鈥淴鈥?to the ordering code.
Logic Symbol
Pin Descriptions
Pin Names
OE
CLK
D
0
鈥揇
19
O
0
鈥揙
19
CE
Description
Output Enable Input (Active LOW)
Clock Input
Inputs
Outputs
Clock Enable Input (Active LOW)
漏 2001 Fairchild Semiconductor Corporation
DS500691
www.fairchildsemi.com