IDT IDT55LVCR2245APY 3.3v cmos octal bus transceiver with 3-state outputs and 5 volt tolerant i/o Datasheet

IDT74LVCR2245A
3.3V CMOS OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
3.3V CMOS
OCTAL BUS TRANSCEIVER
WITH 3-STATE OUTPUTS
AND 5 VOLT TOLERANT I/O
FEATURES:
IDT74LVCR2245A
DESCRIPTION:
• 0.5 MICRON CMOS Technology
• 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
µ W typ. static)
• CMOS power levels (0.4µ
• Rail-to-rail output swing for increased noise margin
• All inputs, outputs, and I/O are 5V tolerant
• Available in SOIC, SSOP, QSOP, and TSSOP packages
The LVCR2245A octal bus transceiver is built using advanced dual metal
CMOS technology. This device 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 output-enable (OE) input can be used to
disable the device so the buses are effectively isolated.
The LVCR2245A has series resistors in the output structure which will
significantly reduce line noise when used with light loads. The driver has
been designed to drive ±12mA at the designated threshold.
Inputs can be driven from either 3.3V or 5V devices. This feature allows
the use of this device as a translator in a mixed 3.3V/5V environment.
DRIVE FEATURES:
• Balanced Output Drivers: ±12mA (B Port)
• Low switching noise
APPLICATIONS:
• 5V and 3.3V mixed voltage systems
• Data communication and telecommunication 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
OCTOBER 1999
1
© 1999 Integrated Device Technology, Inc.
DSC-4610/1
IDT74LVCR2245A
3.3V CMOS OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
ABSOLUTE MAXIMUM RATINGS(1)
PIN CONFIGURATION
Symbol
Description
Max
Unit
VTERM
Terminal Voltage with Respect to GND
–0.5 to +6.5
V
TSTG
Storage Temperature
–65 to +150
°C
IOUT
DC Output Current
–50 to +50
mA
DIR
1
20
VCC
A1
2
19
OE
IIK
IOK
Continuous Clamp Current,
VI < 0 or VO < 0
–50
mA
A2
3
18
B1
ICC
ISS
Continuous Current through each
VCC or GND
±100
mA
A3
4
17
B2
A4
5
16
B3
A5
6
15
B4
A6
7
14
B5
A7
8
13
B6
A8
9
12
B7
10
11
B8
GND
NOTE:
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.
CAPACITANCE (TA = +25°C, F = 1.0MHz)
Parameter(1)
Symbol
Conditions
Typ.
Input Capacitance
VIN = 0V
4.5
6
pF
COUT
Output Capacitance
VOUT = 0V
5.5
8
pF
CI/O
I/O Port Capacitance
VIN = 0V
6.5
8
pF
PIN DESCRIPTION
Pin Names
Description
Output Enable Input (Active LOW)
OE
Ax, Bx
Data Inputs or 3-State Outputs
DIR
Direction Control Output
FUNCTION TABLE(1)
Inputs
OE
DIR
L
L
B Data to A Bus
L
H
A Data to B Bus
H
X
Isolation
NOTE:
1. H = HIGH Voltage Level
X = Don’t Care
L = LOW Voltage Level
2
Unit
CIN
NOTE:
1. As applicable to the device type.
SOIC/ SSOP/ QSOP/ TSSOP
TOP VIEW
Max.
Outputs
IDT74LVCR2245A
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
Input Leakage Current
VCC = 3.6V
VI = 0 to 5.5V
—
—
±5
µA
IOZH
High Impedance Output Current
VCC = 3.6V
VO = 0 to 5.5V
—
—
±10
µA
IOZL
(3-State Output pins)
IOFF
Input/Output Power Off Leakage
VCC = 0V, VIN or VO ≤ 5.5V
—
—
±50
µA
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
—
—
10
mV
µA
3.6 ≤ VIN ≤ 5.5V(2)
One input at VCC - 0.6V, other inputs at VCC or GND
—
—
—
—
10
500
µA
IIH
IIL
Quiescent Power Supply Current
Variation
NOTES:
1. Typical values are at VCC = 3.3V, +25°C ambient.
2. This applies in the disabled state only.
OUTPUT DRIVE CHARACTERISTICS
Symbol
VOH
Test Conditions(1)
Parameter
Output HIGH Voltage
Unit
V
IOH = – 0.1mA
VCC – 0.2
—
VCC = 2.3V
IOH = – 4mA
1.9
—
IOH = – 6mA
1.7
—
IOH = – 4mA
2.2
—
IOH = – 8mA
2
—
IOH = – 6mA
2.4
—
IOH = – 12mA
2
—
VCC = 2.3V to 3.6V
IOL = 0.1mA
—
0.2
VCC = 2.3V
IOL = 4mA
—
0.4
IOL = 6mA
—
0.55
IOL = 4mA
—
0.4
IOL = 8mA
—
0.6
IOL = 6mA
—
0.55
IOL = 12mA
—
0.8
VCC = 3V
Output LOW Voltage
Max.
VCC = 2.3V to 3.6V
VCC = 2.7V
VOL
Min.
VCC = 2.7V
VCC = 3V
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
IDT74LVCR2245A
3.3V CMOS OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
OPERATING CHARACTERISTICS, VCC = 3.3V ± 0.3V, TA = 25°C
Symbol
Parameter
CPD
Power Dissipation Capacitance per Transceiver Outputs enabled
CPD
Power Dissipation Capacitance per Transceiver Outputs disabled
Test Conditions
Typical
Unit
CL = 0pF, f = 10Mhz
48
pF
4
SWITCHING CHARACTERISTICS(1)
Symbol
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
tSK(o)
Parameter
Propagation Delay
Ax to Bx or Bx to Ax
Output Enable Time
OE or DIR to Ax or Bx
Output Disable Time
OE or DIR to Ax or Bx
Output Skew(2)
Min.
—
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
VCC = 2.7V
Max.
7.3
VCC = 3.3V ± 0.3V
Min.
Max.
1.5
6.3
Unit
ns
—
9.5
1.5
8.2
ns
—
8.5
1.7
7.8
ns
—
—
—
1
ns
IDT74LVCR2245A
3.3V CMOS OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
TEST CIRCUITS AND WAVEFORMS
TEST CONDITIONS
Symbol
VCC(1)= 3.3V±0.3V VCC(1)= 2.7V
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
VIN
Pulse (1, 2)
Generator
GND
tPZL
OUTPUT
SWITCH
NORMALLY
VLOAD
LOW
tPZH
OUTPUT SWITCH
NORMALLY
GND
HIGH
500Ω
LVC Link
Switch
DATA
INPUT
VLOAD
TIMING
INPUT
Disable High
Enable High
GND
ASYNCHRONOUS
CONTROL
All Other Tests
Open
SYNCHRONOUS
CONTROL
VIH
VT
0V
tPHL1
tSK (x)
tSK (x)
VOH
VOH-VHZ
0V
VT
0V
tSU
VIH
VT
0V
VIH
VT
0V
VIH
VT
0V
VIH
VT
0V
tH
tREM
tSU
tH
Set-up, Hold, and Release Times
VOH
VT
VOL
LOW-HIGH-LOW
PULSE
VT
tW
HIGH-LOW-HIGH
PULSE
tPHL2
VT
Pulse Width
tSK(x) = tPLH2 - tPLH1 or tPHL2 - tPHL1
Output Skew - tSK(X)
tPHZ
LVC Link
VOH
VT
VOL
OUTPUT 2
VLOAD/2
VOL+VLZ
VOL
Enable and Disable Times
SWITCH POSITION
Open Drain
Disable Low
Enable Low
tPLZ
VLOAD/2
VT
NOTE:
1. Diagram shown for input Control Enable-LOW and input Control Disable-HIGH.
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.
Test
VIH
VT
0V
LVC Link
DEFINITIONS:
CL = Load capacitance: includes jig and probe capacitance.
RT = Termination resistance: should be equal to ZOUT of the Pulse Generator.
tPLH2
DISABLE
ENABLE
Test Circuit for All Outputs
OUTPUT 1
VIH
VT
0V
CONTROL
INPUT
CL
tPLH1
tPHL
Propagation Delay
D.U.T.
INPUT
tPLH
LVC Link
VOUT
RT
tPHL
OPPOSITE PHASE
INPUT TRANSITION
Open
500Ω
tPLH
OUTPUT
VLOAD
VCC
VIH
VT
0V
VOH
VT
VOL
SAME PHASE
INPUT TRANSITION
LVC 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
LVC Link
IDT74LVCR2245A
3.3V CMOS OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
ORDERING INFORMATION
X
LVC
IDT
XX
XXXX
XX
Temp. Range
Bus-Hold Device Type Package
SO
PY
Q
PG
Small Outline IC (gull wing)
Shrink Small Outline Package
Quarter Size Small Outline Package
Thin Shrink Small Outline Package
R2245A Octal Bus Transceiver with 3-State Outputs, ±12mA
Blank
No Bus-hold
74
–40°C to +85°C
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6
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