IDT74LVCH16646A Integrated Device Technology, IDT74LVCH16646A Datasheet

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IDT74LVCH16646A

Manufacturer Part Number
IDT74LVCH16646A
Description
3.3v Cmos 16-bit Bus Transceiver/register With 3-state Outputs 5 Volt Tolerant I/o And Bus-hold
Manufacturer
Integrated Device Technology
Datasheet
FEATURES:
• Typical t
• ESD > 2000V per MIL-STD-883, Method 3015; > 200V using
• V
• V
• CMOS power levels (0.4μ μ μ μ μ W typ. static)
• All inputs, outputs, and I/O are 5V tolerant
• Supports hot insertion
• Available in TSSOP and TVSOP packages
DRIVE FEATURES:
• High Output Drivers: ±24mA
• Reduced system switching noise
APPLICATIONS:
• 5V and 3.3V mixed voltage systems
• Data communication and telecommunication systems
FUNCTIONAL BLOCK DIAGRAM
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
© 2006 Integrated Device Technology, Inc.
1
1
IDT74LVCH16646A
3.3V CMOS 16-BIT BUS TRANSCEIVER/REGISTER
CLKBA
CLKAB
machine model (C = 200pF, R = 0)
1
1
1
CC
CC
1OE
DIR
SBA
SAB
1
A
= 3.3V ± 0.3V, Normal Range
= 2.7V to 3.6V, Extended Range
1
1
5
56
55
54
2
3
SK(o)
(Output Skew) < 250ps
1D
C1
One of Eight Channels
TO SEVEN OTHER CHANNELS
3.3V CMOS 16-BIT BUS
TRANSCEIVER/REGISTER
WITH 3-STATE OUTPUTS,
5 VOLT TOLERANT I/O AND BUS-HOLD
C1
1D
52
1
2
2
B
1
CLKBA
CLKAB
1
DESCRIPTION:
advanced dual metal CMOS technology. This high-speed, low power
device is organized as two independent 8-bit D-type transceivers with 3-
state D-type registers.The controls circuitry is organized for multiplexed
transmission of data between A bus and B bus either directly or from the
internal storage registers. Each 8-bit transceiver/register features direction
control (DIR), over-riding Output Enable control (OE) and Select lines (SAB
and SBA) to select either real- time data or stored data. Separate clock inputs
are provided for A and B port registers. Data on the A or B data bus, or both,
can be stored in the internal registers by the low-to-high transitions at the
appropriate clock pins. Flow-through organization of signal pins simplifies
layout. All inputs are designed with hysteresis for improved noise margin.
the use of this 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.
2
2
2
DIR
SBA
SAB
2
2
The LVCH16646A 16-bit bus transceiver and register is built using
All pins can be driven from either 3.3V or 5V devices. This feature allows
The LVCH16646A has been designed with a ±24mA output driver. This
The LVCH16646A has “bus-hold” which retains the inputs’ last state
OE
A
1
15
30
31
27
26
29
28
1D
C1
One of Eight Channels
TO SEVEN OTHER CHANNELS
INDUSTRIAL TEMPERATURE RANGE
IDT74LVCH16646A
C1
1D
JUNE 2006
DSC-3787/4
42
2
B
1

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IDT74LVCH16646A Summary of contents

Page 1

... DIR 2 30 CLKBA 2 31 SBA 2 27 CLKAB 2 26 SAB INDUSTRIAL TEMPERATURE RANGE IDT74LVCH16646A 1D C1 One of Eight Channels SEVEN OTHER CHANNELS JUNE 2006 DSC-3787/4 ...

Page 2

... IDT74LVCH16646A 3.3V CMOS 16-BIT BUS TRANSCEIVER/REGISTER PIN CONFIGURATION 1 1DIR 2 1CLKAB 3 SAB 1 4 GND GND GND ...

Page 3

... IDT74LVCH16646A 3.3V CMOS 16-BIT BUS TRANSCEIVER/REGISTER FUNCTION TABLE (1) Inputs xOE xDIR xCLKAB xCLKBA ↑ ↑ NOTES HIGH Voltage Level X = Don’t Care L = LOW Voltage Level ↑ = LOW-to-HIGH transition 2 ...

Page 4

... IDT74LVCH16646A 3.3V CMOS 16-BIT BUS TRANSCEIVER/REGISTER BUS A xCLKBA xDIR xOE xCLKAB Real-Time Transfer Bus BUS A xCLKBA xDIR xOE xCLKAB ↑ ↑ ↑ ↑ Storage from and B BUS B xSAB xSBA xDIR BUS BUS A B xSAB ...

Page 5

... IDT74LVCH16646A 3.3V CMOS 16-BIT BUS TRANSCEIVER/REGISTER BUS-HOLD CHARACTERISTICS (1) Symbol Parameter I Bus-Hold Input Sustain Current BHH I BHL I Bus-Hold Input Sustain Current BHH I BHL I Bus-Hold Input Overdrive Current BHHO I BHLO NOTES: 1. Pins with Bus-Hold are identified in the pin description. 2. Typical values are 3.3V, +25°C ambient. ...

Page 6

... IDT74LVCH16646A 3.3V CMOS 16-BIT BUS TRANSCEIVER/REGISTER SWITCHING CHARACTERISTICS Symbol Parameter f MAX t Propagation Delay PLH t xAx to xBx or xBx to xAx PHL t Propagation Delay PLH t xCLKBA or xCLKAB to xAx or xBx PHL t Propagation Delay PLH t xSBA or xSAB to xAx or xBx PHL t Output Enable Time PZH t xOE to xAx or Bx ...

Page 7

... IDT74LVCH16646A 3.3V CMOS 16-BIT BUS TRANSCEIVER/REGISTER TEST CIRCUITS AND WAVEFORMS TEST CONDITIONS (1) (1) Symbol V = 3.3V±0. 2. LOAD V 2.7 2 1.5 1 300 300 LZ V 300 300 OUT Pulse (1, 2) D.U.T. Generator R T Test Circuit for All Outputs DEFINITIONS Load capacitance: includes jig and probe capacitance ...

Page 8

... IDT74LVCH16646A 3.3V CMOS 16-BIT BUS TRANSCEIVER/REGISTER ORDERING INFORMATION X XX IDT XX LVC Temp. Range Bus-Hold Family CORPORATE HEADQUARTERS 6024 Silver Creek Valley Road San Jose, CA 95138 XX XXXX Device Type Package PA PAG PF PFG 646A for SALES: 800-345-7015 or 408-284-8200 fax: 408-284-2775 www.idt.com 8 INDUSTRIAL TEMPERATURE RANGE ...

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