IDT IDT74ALVC245SO 3.3v cmos octal bus transceiver with 3-state output Datasheet

IDT74ALVC245
3.3V CMOS OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
3.3V CMOS OCTAL
BUS TRANSCEIVER WITH
3-STATE OUTPUTS
FEATURES:
IDT74ALVC245
DESCRIPTION:
• 0.5 MICRON CMOS Technology
• Typical tSK(o) (Output Skew) < 250ps
• ESD > 2000V per MIL-STD-883, Method 3015; > 200V using
machine model (C = 200pF, R = 0)
• VCC = 3.3V ± 0.3V, Normal Range
• VCC = 2.7V to 3.6V, Extended Range
• VCC = 2.5V ± 0.2V
µ W typ. static)
• CMOS power levels (0.4µ
• Rail-to-Rail output swing for increased noise margin
• Available in SOIC and TSSOP packages
This octal bus transceiver is built using advanced dual metal CMOS
technology. The three-state controls are designed to operate this device
in a single-byte mode. All inputs are designed with hysteresis for improved
noise margin.
The ALVC245 is designed for asynchronous communication between
data buses. The device transmits data from the A bus to the B bus or from
the B bus to the A bus, depending on the logic level at the direction-control
(DIR) input.
The ALVC245 has been designed with a ±24mA output driver. This
driver is capable of driving a moderate to heavy load while maintaining
speed performance.
DRIVE FEATURES:
• High Output Drivers: ±24mA
• Suitable for Heavy Loads
APPLICATIONS:
• 3.3V high speed systems
• 3.3V and lower voltage computing systems
FUNCTIONAL BLOCK DIAGRAM
DIR
1
19
A1
OE
2
18
B1
TO SEVEN OTHER CHANNELS
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
JANUARY 2004
1
© 2004 Integrated Device Technology, Inc.
DSC-4917/2
IDT74ALVC245
3.3V CMOS OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
PIN CONFIGURATION
ABSOLUTE MAXIMUM RATINGS(1)
Symbol
Description
Max
Unit
VTERM(2)
Terminal Voltage with Respect to GND
–0.5 to +4.6
V
VTERM(3)
Terminal Voltage with Respect to GND
–0.5 to VCC+0.5
V
TSTG
Storage Temperature
–65 to +150
°C
DIR
1
20
VCC
A1
2
19
OE
IOUT
DC Output Current
–50 to +50
mA
Continuous Clamp Current,
VI < 0 or VI > VCC
±50
mA
A2
3
18
B1
IIK
A3
4
17
B2
IOK
Continuous Clamp Current, VO < 0
–50
mA
A4
5
16
B3
ICC
ISS
Continuous Current through each
VCC or GND
±100
mA
A5
6
15
B4
A6
7
14
B5
A7
8
13
B6
A8
9
12
B7
10
11
B8
GND
NOTES:
1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause
permanent damage to the device. This is a stress rating only and functional operation
of the device at these or any other conditions above those indicated in the operational
sections of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect reliability.
2. VCC terminals.
3. All terminals except VCC.
CAPACITANCE (TA = +25°C, F = 1.0MHz)
SOIC/ TSSOP
TOPVIEW
Parameter(1)
Symbol
Conditions
Typ.
Max.
CIN
Input Capacitance
VIN = 0V
5
7
pF
COUT
Output Capacitance
VOUT = 0V
7
9
pF
CI/O
I/O Port Capacitance
VIN = 0V
7
9
pF
NOTE:
1. As applicable to the device type.
PIN DESCRIPTION
Pin Names
Description
3-State Output Enable Input (Active LOW)
OE
DIR
Direction-Control Input
Ax
Side A Inputs or 3-State Outputs
Bx
Side B Inputs or 3-State Outputs
FUNCTION TABLE(1)
Inputs
DIR
Operation
L
L
B data to A bus
L
H
A data to B bus
H
X
Isolation
OE
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
X = Don’t Care
2
Unit
IDT74ALVC245
3.3V CMOS OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified:
Operating Condition: TA = –40°C to +85°C
Symbol
VIH
VIL
Min.
Typ.(1)
Max.
Unit
VCC = 2.3V to 2.7V
1.7
—
—
V
VCC = 2.7V to 3.6V
2
—
—
VCC = 2.3V to 2.7V
—
—
0.7
VCC = 2.7V to 3.6V
—
—
0.8
Parameter
Input HIGH Voltage Level
Input LOW Voltage Level
Test Conditions
V
IIH
Input HIGH Current
VCC = 3.6V
VI = VCC
—
—
±5
µA
IIL
Input LOW Current
VCC = 3.6V
VI = GND
—
—
±5
µA
IOZH
High Impedance Output Current
VCC = 3.6V
VO = VCC
—
—
±10
µA
IOZL
(3-State Output pins)
VO = GND
—
—
±10
VIK
Clamp Diode Voltage
VCC = 2.3V, IIN = –18mA
—
–0.7
–1.2
V
VH
ICCL
ICCH
ICCZ
∆ICC
Input Hysteresis
Quiescent Power Supply Current
VCC = 3.3V
VCC = 3.6V
VIN = GND or VCC
—
—
100
0.1
—
40
mV
µA
Quiescent Power Supply Current
Variation
One input at VCC - 0.6V, other inputs at VCC or GND
—
—
750
µA
NOTE:
1. Typical values are at VCC = 3.3V, +25°C ambient.
OUTPUT DRIVE CHARACTERISTICS
Symbol
VOH
VOL
Test Conditions(1)
Parameter
Output HIGH Voltage
Output LOW Voltage
Min.
Max.
Unit
VCC – 0.2
—
V
VCC = 2.3V to 3.6V
IOH = – 0.1mA
VCC = 2.3V
IOH = – 6mA
2
—
VCC = 2.3V
IOH = – 12mA
1.7
—
VCC = 2.7V
2.2
—
VCC = 3V
2.4
—
VCC = 3V
IOH = – 24mA
2
—
VCC = 2.3V to 3.6V
IOL = 0.1mA
—
0.2
VCC = 2.3V
IOL = 6mA
—
0.4
IOL = 12mA
—
0.7
VCC = 2.7V
IOL = 12mA
—
0.4
VCC = 3V
IOL = 24mA
—
0.55
V
NOTE:
1. VIH and VIL must be within the min. or max. range shown in the DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE table for the appropriate VCC range.
TA = – 40°C to + 85°C.
3
IDT74ALVC245
3.3V CMOS OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
OPERATING CHARACTERISTICS, TA = 25°C
Symbol
Parameter
CPD
Power Dissipation Capacitance Outputs enabled
CPD
Power Dissipation Capacitance Outputs disabled
VCC = 2.5V ± 0.2V
VCC = 3.3V ± 0.3V
Typical
Typical
Test Conditions
Unit
CL = 0pF, f = 10Mhz
pF
SWITCHING CHARACTERISTICS(1)
VCC = 2.5V ± 0.2V
Symbol
VCC = 2.7V
VCC = 3.3V ± 0.3V
Parameter
Min.
Max.
Min.
Max.
Min.
Max.
Unit
1.5
7
1.5
5.6
1.5
5
ns
1.5
9.5
1.5
6.2
1.5
5.8
ns
1.5
7.5
1.5
5
1.5
4.8
ns
—
—
—
—
—
500
ps
tPLH
Propagation Delay
tPHL
Ax to Bx or Bx to Ax
tPZH
Output Enable Time
tPZL
OE or DIR to Ax or Bx
tPHZ
Output Disable Time
tPLZ
OE or DIR to Ax or Bx
tSK(O)
Output Skew(2)
NOTES:
1. See TEST CIRCUITS AND WAVEFORMS. TA = – 40°C to + 85°C.
2 Skew between any two outputs of the same package and switching in the same direction.
4
IDT74ALVC245
3.3V CMOS OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
TEST CIRCUITS AND WAVEFORMS
TEST CONDITIONS
VCC(1)= 3.3V±0.3V VCC(1)= 2.7V
Symbol
VCC(2)= 2.5V±0.2V
Unit
VLOAD
6
6
2 x Vcc
V
VIH
2.7
2.7
Vcc
V
VT
1.5
1.5
Vcc / 2
V
VLZ
300
300
150
mV
VHZ
300
300
150
mV
CL
50
50
30
pF
tPLH
tPHL
tPLH
tPHL
OUTPUT
VIH
VT
0V
OPPOSITE PHASE
INPUT TRANSITION
ALVC Link
Propagation Delay
VLOAD
VCC
Open
VIN
VOUT
tPZL
D.U.T.
OUTPUT
SWITCH
NORMALLY CLOSED
LOW
tPZH
OUTPUT SWITCH
NORMALLY
OPEN
HIGH
500Ω
RT
DISABLE
ENABLE
CONTROL
INPUT
GND
500Ω
Pulse(1, 2)
Generator
VIH
VT
0V
VOH
VT
VOL
SAME PHASE
INPUT TRANSITION
CL
ALVC Link
Test Circuit for All Outputs
tPLZ
VIH
VT
0V
VLOAD/2
VT
VLOAD/2
VLZ
VOL
tPHZ
VOH
VHZ
0V
VT
0V
ALVC Link
DEFINITIONS:
CL = Load capacitance: includes jig and probe capacitance.
RT = Termination resistance: should be equal to ZOUT of the Pulse Generator.
Enable and Disable Times
NOTES:
1. Pulse Generator for All Pulses: Rate ≤ 10MHz; tF ≤ 2.5ns; tR ≤ 2.5ns.
2. Pulse Generator for All Pulses: Rate ≤ 10MHz; tF ≤ 2ns; tR ≤ 2ns.
SWITCH POSITION
DATA
INPUT
Test
Switch
Open Drain
Disable Low
Enable Low
VLOAD
Disable High
Enable High
GND
All Other Tests
Open
tSU
VIH
VT
0V
VIH
VT
0V
VIH
VT
0V
VIH
VT
0V
tH
TIMING
INPUT
tREM
ASYNCHRONOUS
CONTROL
SYNCHRONOUS
CONTROL
tSU
tH
ALVC Link
INPUT
OUTPUT 1
tPLH1
VIH
VT
0V
tPHL1
tSK (x)
Set-up, Hold, and Release Times
VOH
VT
VOL
tSK (x)
LOW-HIGH-LOW
PULSE
tW
VOH
VT
VOL
OUTPUT 2
tPLH2
HIGH-LOW-HIGH
PULSE
VT
ALVC Link
tPHL2
Pulse Width
tSK(x) = tPLH2 - tPLH1 or tPHL2 - tPHL1
Output Skew - tSK(X)
VT
ALVC Link
NOTES:
1. For tSK(o) OUTPUT1 and OUTPUT2 are any two outputs.
2. For tSK(b) OUTPUT1 and OUTPUT2 are in the same bank.
5
IDT74ALVC245
3.3V CMOS OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
ORDERING INFORMATION
X
ALVC
IDT
XX
Bus-Hold
Temp. Range
XXX
XX
Device Type Package
CORPORATE HEADQUARTERS
2975 Stender Way
Santa Clara, CA 95054
SO
PG
Small Outline IC
Thin Shrink Small Outline Package
245
Octal Bus Transceiver with 3-State Outputs, ±24mA
Blank
No Bus-Hold
74
–40°C to +85°C
for SALES:
800-345-7015 or 408-727-6116
fax: 408-492-8674
www.idt.com
6
for Tech Support:
[email protected]
(408) 654-6459
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