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PDF PI74ALVCH16260 Data sheet ( Hoja de datos )
| Número de pieza | PI74ALVCH16260 | |
| Descripción | 12-Bit To 24-Bit Multiplexed D-Type Latch | |
| Fabricantes | Pericom Semiconductor Corporation | |
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PI74ALVCH16260111222333444555666777888999000111222333444555666777888999000111222333444555666777888999000111222111222333444555666777888999000111222333444555666777888999000111222333444555666777888999000111222111222333444555666777888999000111222333444555666777888999000111222333444555666777888999000111222111222333444555666777888999000111222333444555666777888999000111222333444555666777888999000111222111222333444555666777888999000111222
12-Bit To 24-Bit Multiplexed D-Type Latch
with 3-State Outputs
Product Features
• PI74ALVCH16260 is designed for low voltage operation
• VCC = 2.3V to 3.6V
• Hysteresis on all inputs
• Typical VOLP (Output Ground Bounce)
< 0.8V at VCC = 3.3V, TA = 25°C
www.DataS•heTeyt4pUic.caolmVOHV (Output VOH Undershoot)
< 2.0V at VCC = 3.3V, TA = 25°C
• Bus Hold retains last active bus state during 3-State,
eliminating the need for external pullup resistors
• Industrial operation at 40°C to +85°C
• Packages available:
56-pin 240 mil wide plastic TSSOP (A)
56-pin 300 mil wide plastic SSOP (V)
Product Description
Pericom Semiconductors PI74ALVCH series of logic circuits are
produced using the Companys advanced 0.5 micron CMOS
technology, achieving industry leading speed.
The PI74ALVCH16260 is a 12-bit to 24-bit multiplexed D-type latch
designed for 2.3V to 3.6 VCC operation. It is used in applications
where two separate datapaths must be multiplexed onto, or
demultiplexed from, a single data path.
Typical applications include multiplexing and/or demultiplexing
address and data information in microprocessor or bus-interface
and in memory-interleaving.
Three 12-bit I/O ports (A1-A12,1B1-1B12,and2B1-2B12)are available
for address and/or data transfer. The output-enable (OE1B, OE2B,
and OEA) inputs control bus transceiver functions. The OE1B and
OE2B control signals also allow bank control in the A-to-B direction.
Address and/or data information can be stored using the internal
storage latches. The latch-enable (LE1B, LE2B, LEA1B, and LEA2B)
inputs are used to control data storage. When the latch-enable input
is HIGH, the latch is transparent. When the latch-enable input goes
LOW, the data present at the inputs is latched and remains latched
until the latch-enable input is returned HIGH.
To ensure high-impedance state during power up or power down,
OE should be tied to VCC through a pullup resistor whose minimum
value is determined by the current-sinking capability of the driver.
Logic Block Diagram
Active bus-hold circuitry is provided to hold unused or floating
data inputs at a valid logic level.
LE1B 2
LE2B 27
LEA1B 30
LEA2B 55
OE2B 56
29
OE1B
OEA 1
SEL 28
A1 8
G1
1
1
C1
1D
C1
1D
C1
1D
23
1B1
6
2B1
C1
1D
TO 11 OTHER CHANNELS
1
PS8089C 04/17/01
1 page  
PI74ALVCH16260
12-Bit To 24-Bit Multiplexed D-Type Latch
with 3-State Outputs1122334455667788990011223344556677889900112233445566778899001122112233445566778899001122334455667788990011223344556677889900112211223344556677889900112233445566778899001122334455667788990011221122334455667788990011223344556677889900112233445566778899001122112233445566778899001122
Switching Characteristics over Operating Range(1)
Parameters
From (Input)
To (Output)
VCC = 2.5V ± 0.2V
Min.(2)
Max.
A or B
B or A 1.2 6.0
tPD LE A or B 1.0 6.2
SEL A 1.2 7.5
tEN
www.DataSheet4U.tcDoImS
OE A or B 1.0 7.2
OE A or B 1.7 5.9
Notes:
1. See test circuit and waveforms.
2. Minimum limits are guaranteed but not tested on Propagation Delays.
VCC = 2.7V
Min.(2) Max.
5.1
5.2
6.6
6.4
5.0
VCC = 3.3V ± 0.3V
Min.(2) Max.(2)
1.2 4.3
1.0 4.4
1.1 5.6
1.0 5.4
1.3 4.6
Units
ns
Operating Characteristics, TA = 25ºC
Parameter
Test Conditions
Outputs Enabled
CPD Power Dissipation Capacitance
Outputs Disabled
CL = 50pF,
f = 10 MHz
VCC = 2.5V ± 0.2V VCC = 3.3V ± 0.3V
Units
Typical
87 120
pF
80.5 118
Power Supply Characteristics
Parameters
Description
Test Conditions(1)
Min. Typ(2) Max. Units
ICC
∆ICC
Quiescent Power Supply Current
Supply Current per
Input @TTL HIGH
VCC = Max., Iout = 0V, Vin = GND or VCC
VCC = 3.0V to 3.6V, One input at VCC 0.6V
Other inputs at VCC or GND
40 µA
750
Note:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device.
Pericom Semiconductor Corporation
2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com
5 PS8089C 04/17/01
5 Page | ||
| Páginas | Total 5 Páginas | |
| PDF Descargar | [ Datasheet PI74ALVCH16260.PDF ] | |
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