参数资料
型号: IDT74ALVCH16821PV8
厂商: INTEGRATED DEVICE TECHNOLOGY INC
元件分类: 总线收发器
英文描述: ALVC/VCX/A SERIES, DUAL 10-BIT DRIVER, TRUE OUTPUT, PDSO56
封装: 0.635 MM PITCH, SSOP-56
文件页数: 1/6页
文件大小: 109K
代理商: IDT74ALVCH16821PV8
1
EXTENDED COMMERCIAL TEMPERATURE RANGE
IDT74ALVCH16821
3.3V CMOS 20-BIT BUS-INTERFACE FLIP-FLOP
AUGUST 1999
1999 Integrated Device Technology, Inc.
DSC-4547/1
c
IDT74ALVCH16821
EXTENDED COMMERCIAL TEMPERATURE RANGE
3.3V CMOS 20-BIT
BUS-INTERFACE FLIP-FLOP
WITH 3-STATE OUTPUTS
AND BUS-HOLD
APPLICATIONS:
DESCRIPTION:
FEATURES:
0.5 MICRON CMOS Technology
Typical tSK(0) (Output Skew) < 250ps
ESD > 2000V per MIL-STD-883, Method 3015;
> 200V using machine model (C = 200pF, R = 0)
0.635mm pitch SSOP, 0.50mm pitch TSSOP,
and 0.40mm pitch TVSOP packages
Extended commercial range of – 40°C to + 85°C
–VCC = 3.3V ± 0.3V, Normal Range
–VCC = 2.7V to 3.6V, Extended Range
–VCC = 2.5V ± 0.2V
CMOS power levels (0.4 W typ. static)
Rail-to-Rail output swing for increased noise margin
FUNCTIONAL BLOCK DIAGRAM
Drive Features for ALVCH16821:
High Output Drivers: ±24mA
Suitable for heavy loads
3.3V High Speed Systems
3.3V and lower voltage computing systems
This high speed, 20-bit bus-interface flip-flop is built using advanced
CMOS technology. The ALVCH16821 device can be used as two 10-bit
flip-flops or one 20-bit flip-flop. On the positive transition of the clock
(CLK) input, the device provides true data at the Q outputs.
A buffered output-enable (OE) input can be used to place the ten
outputs in either a normal logic state (high or low logic levels) or a high-
impedance state. In the high impedance state, the outputs neither load
nor drive the bus lines significantly. The high-impedance state and
increased drive provide the capability to drive bus lines without the need
for interface or pullup components. OE input does not affect the internal
operation of the flip-flops. Old data can be retained or new data can be
entered while the outputs are in the high-impedance state.
The ALVCH16821 has been designed with a ±24mA output driver.
This driver is capable of driving a moderate to heavy load while
maintaining speed performance.
The ALVCH16821 has “bus-hold” which retains the inputs’ last state
whenever the input goes to a high impedance. This prevents floating
inputs and eliminates the need for pull-up/down resistor.
C1
1
D
TO NINE OTHER CHANNELS
1
OE
1
56
1
CLK
1
D1
55
1
Q1
2
One of 10
Channels
C1
1
D
TO NINE OTHER CHANNELS
2
OE
28
29
2
CLK
2
D1
42
2
Q1
15
One of 10
Channels
相关PDF资料
PDF描述
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