lvch16260a Integrated Device Technology, lvch16260a Datasheet

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lvch16260a

Manufacturer Part Number
lvch16260a
Description
3.3v Cmos 12-bit Tri-port Bus Exchanger With 5 Volt Tolerant I/o And Bus-hold
Manufacturer
Integrated Device Technology
Datasheet
Drive Features for LVCH16260A:
• 5V and 3.3V mixed voltage systems
• Data communication and telecommunication systems
metal CMOS technology. The LVCH16260A is a high-speed 12-bit latched
IDT74LVCH16260A
3.3V CMOS 12-BIT TRI-PORT BUS EXCHANGER WITH 5 VOLT I/O
c
– All inputs, outputs and I/O are 5 Volt tolerant
– High Output Drivers: ±24mA
– Reduced system switching noise
The LVCH16260A tri-port bus exchanger is built using advanced dual
1999 Integrated Device Technology, Inc.
Typical
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
V
V
CMOS power levels (0.4µ W typ. static)
Supports hot insertion
CC
CC
= 3.3V ±0.3V, Normal Range
= 2.7V to 3.6V, Extended Range
t
SK(0)
(Output Skew) < 250ps
LEA1B
LEA2B
OE1B
OE2B
LE1B
LE2B
A
OEA
SEL
1:12
29
30
28
27
55
56
2
1
12
3.3V CMOS 12-BIT
TRI-PORT BUS EXCHANGER
WITH 5 VOLT TOLERANT I/O
AND BUS-HOLD
12
12
M
U
X
1
0
12
12
1
bus multiplexer/transceiver for use in high-speed microprocessor applica-
tions. This bus exchanger supports memory interleaving with latched out-
puts on the B ports and address multiplexing with latched inputs on the B
ports.
may be transferred between the A port and either/both of the B ports. The
latch enable (LE1B, LE2B, LEA1B and LEA2B) inputs control data storage.
When a latch-enable input is high, the latch is transparent. When a latch-
enable input is low, the data at the input is latched and remains latched until
the latch enable input is returned high. Independent output enables (OE1B
and OE2B) allow reading from one port while writing to the other port.
5V devices. This feature allows the use of the device as a translator in a
mixed 3.3V/5V supply system.
driver is capable of driving a moderate to heavy load while maintaining
speed performance.
whenever the input goes to a high impedance. This prevents floating inputs
and eliminates the need for pull-up/down resistors.
LATCH
LATCH
LATCH
LATCH
A-1B
1B-A
2B-A
A-2B
The LVCH16260A tri-port bus exchanger has three 12-bit ports. Data
All pins of the 12-bit Bus Exchanger can be driven from either 3.3V or
The LVCH16260A has been designed with a ±24mA output driver. The
The LVCH16260A has “bus-hold” which retains the inputs’ last state
12
12
EXTENDED COMMERCIAL TEMPERATURE RANGE
12
12
1B
2B
1:12
IDT74LVCH16260A
1:12
DSC-4229/1

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lvch16260a Summary of contents

Page 1

... All pins of the 12-bit Bus Exchanger can be driven from either 3. devices. This feature allows the use of the device as a translator in a mixed 3.3V/5V supply system. The LVCH16260A has been designed with a ±24mA output driver. The driver is capable of driving a moderate to heavy load while maintaining speed performance. ...

Page 2

... IDT74LVCH16260A 3.3V CMOS 12-BIT TRI-PORT BUS EXCHANGER WITH 5 VOLT I/O 1 OEA 2 LE1B GND GND GND ...

Page 3

... IDT74LVCH16260A 3.3V CMOS 12-BIT TRI-PORT BUS EXCHANGER WITH 5 VOLT I/O Inputs 1Bx 2Bx SEL LE1B LE2B NOTES HIGH Voltage Level L = LOW Voltage Level X = Don’t Care Z = High-Impedance 2 ...

Page 4

... IDT74LVCH16260A 3.3V CMOS 12-BIT TRI-PORT BUS EXCHANGER WITH 5 VOLT I/O Following Conditions Apply Unless Otherwise Specified: Operating Condition – +85 A Symbol Parameter V Input HIGH Voltage Level IH V Input LOW Voltage Level IL I Input Leakage Current High Impedance Output Current OZH ...

Page 5

... IDT74LVCH16260A 3.3V CMOS 12-BIT TRI-PORT BUS EXCHANGER WITH 5 VOLT I/O Symbol Parameter V Output HIGH Voltage OH V Output LOW Voltage OL NOTE and V must be within the min. or max. range shown in the DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE table for the IH IL appropriate V range – 40° +85° C. ...

Page 6

... IDT74LVCH16260A 3.3V CMOS 12-BIT TRI-PORT BUS EXCHANGER WITH 5 VOLT I/O (1) ( 3.3V ±0. 2.7V Symbol LOAD V 2.7 2 1.5 1 300 300 LZ V 300 300 OUT Pulse (1, 2) D.U.T. Generator R T DEFINITIONS Load capacitance: includes jig and probe capacitance Termination resistance: should be equal Generator ...

Page 7

... IDT74LVCH16260A 3.3V CMOS 12-BIT TRI-PORT BUS EXCHANGER WITH 5 VOLT I/O IDT LVC Temp. Range Bus-Hold Family *To search for sales office near you, please click the sales button found on our home page or dial the 800# above and press 2. The IDT logo is a registered trademark of Integrated Device Technology, Inc. ...

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