IDT74LVCHR162245A
3.3V CMOS 16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
3.3V CMOS 16-BIT
IDT74LVCHR162245A
BUS TRANSCEIVER
WITH 3 STATE OUTPUTS,
5 VOLT TOLERANT I/O, BUS-HOLD
DESCRIPTION:
FEATURES:
This 16-bit bus transceiver is built using advanced dual metal CMOS
technology. This high-speed, low power device is ideal for asynchronous
communication between two buses (A and B). The Direction and Output
Enable controls are designed to operate this device as either two independent 8-bit transceivers or one 16-bit transceiver. The direction control pin
(DIR) controls the direction of data flow. The output enable pin (OE)
overrides the direction control and disables both ports. All inputs are
designed with hysteresis for improved noise margin.
All pins 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 supply system.
The LVCHR162245A has series resistors in the device 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
levels.
The LVCHR162245A has “bus-hold” which retains the inputs' last state
whenever the input goes to a high impedance. This prevents floating inputs
and eliminates the need for pull-up/down resistors.
• 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
μ W typ. static)
• CMOS power levels (0.4μ
• All inputs, outputs, and I/O are 5V tolerant
• Supports hot insertion
• Available in TSSOP package
DRIVE FEATURES:
• Balanced Output Drivers: ±12mA
• Low switching noise
APPLICATIONS:
• 5V and 3.3V mixed voltage systems
• Data communication and telecommunication systems
FUNCTIONAL BLOCK DIAGRAM
1DIR
24
1
2DIR
25
48
1OE
1A1
2OE
47
2A1
2
36
13
1B1
1A2
2A2
3
14
1B2
1A3
2A3
16
1B3
2B3
32
43
2A4
6
17
1B4
1A5
2B4
41
2A5
30
8
19
1B5
1A6
40
2A6
9
1A7
20
1B6
38
2A7
22
2B7
37
2A8
INDUSTRIAL TEMPERATURE RANGE
2B6
27
1B7
12
2B5
29
11
1A8
2B2
33
44
5
1A4
2B1
35
46
26
23
1B8
2B8
1
OCTOBER 2015
DSC-4598/6
IDT74LVCHR162245A
3.3V CMOS 16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
ABSOLUTE MAXIMUM RATINGS(1)
PIN CONFIGURATION
Symbol
1DIR
1
48
1OE
1B1
2
47
1A1
1B2
3
46
1A2
GND
4
45
GND
1B3
5
44
1A3
43
1A4
1B4
6
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
IIK
IOK
Continuous Clamp Current,
VI < 0 or VO < 0
–50
mA
ICC
ISS
Continuous Current through each
VCC or GND
±100
mA
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.
VCC
7
42
VCC
1B5
8
41
1A5
1B6
9
40
1A6
GND
10
39
GND
1B7
11
38
1A7
Symbol
Conditions
Typ.
Max.
1B8
12
37
1A8
CIN
Input Capacitance
VIN = 0V
4.5
6
pF
COUT
Output Capacitance
VOUT = 0V
6.5
8
pF
CI/O
I/O Port Capacitance
VIN = 0V
6.5
8
pF
2B1
13
36
2B2
14
35
2A2
GND
15
34
GND
2B3
16
33
2A3
2B4
17
32
2A4
VCC
18
31
VCC
CAPACITANCE (TA = +25°C, F = 1.0MHz)
2A1
Parameter(1)
Unit
NOTE:
1. As applicable to the device type.
PIN DESCRIPTION
Pin Names
Description
xOE
Output Enable Input (Active LOW)
xDIR
Direction Control Output
2B5
19
30
2A5
xAx
Side A Inputs or 3-State Outputs(1)
2B6
20
29
2A6
xBx
Side B Inputs or 3-State Outputs(1)
GND
21
28
GND
2B7
22
27
2A7
2B8
23
26
2A8
2DIR
24
25
2OE
NOTE:
1. These pins have "Bus-Hold". All other pins are standard inputs, outputs, or I/Os.
FUNCTION TABLE (EACH 8-BIT SECTION)(1)
Inputs
TSSOP
TOP VIEW
xOE
xDIR
L
L
B Data to A Bus
L
H
A Data to B Bus
H
X
High Z State
NOTE:
1. H = HIGH Voltage Level
X = Don’t Care
L = LOW Voltage Level
Z = High-Impedance
2
Outputs
IDT74LVCHR162245A
3.3V CMOS 16-BIT 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
ΔICC
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
Min.
Typ.(2)
Max.
Unit
– 75
—
—
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.
BUS-HOLD CHARACTERISTICS
Symbol
IBHH
Parameter(1)
Test Conditions
Bus-Hold Input Sustain Current
VCC = 3V
VI = 2V
VI = 0.8V
75
—
—
Bus-Hold Input Sustain Current
VCC = 2.3V
VI = 1.7V
—
—
—
VI = 0.7V
—
—
—
VI = 0 to 3.6V
—
—
±500
IBHL
IBHH
IBHL
IBHHO
Bus-Hold Input Overdrive Current
VCC = 3.6V
IBHLO
NOTES:
1. Pins with Bus-Hold are identified in the pin description.
2. Typical values are at VCC = 3.3V, +25°C ambient.
3
μA
μA
IDT74LVCHR162245A
3.3V CMOS 16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
OUTPUT DRIVE CHARACTERISTICS
Symbol
VOH
Test Conditions(1)
Parameter
Output HIGH Voltage
Output LOW Voltage
Max.
Unit
V
VCC = 2.3V to 3.6V
IOH = – 0.1mA
VCC – 0.2
—
VCC = 2.3V
IOH = – 4mA
1.9
—
IOH = – 6mA
1.7
—
VCC = 2.7V
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
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.
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
39
pF
4
SWITCHING CHARACTERISTICS(1)
Symbol
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
tSK(o)
Parameter
Propagation Delay
xAx to xBx or xBx to xAx
Output Enable Time
xOE to xAx or xBx
Output Disable Time
xOE to xAx or xBx
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.
5.7
VCC = 3.3V ± 0.3V
Min.
Max.
1.5
4.8
Unit
ns
—
7.9
1.5
6.3
ns
—
8.3
2.2
7.4
ns
—
—
—
500
ps
IDT74LVCHR162245A
3.3V CMOS 16-BIT 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
VLOAD
6
VCC(2)= 2.5V±0.2V
Unit
2 x Vcc
V
6
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
VIH
VT
0V
VOH
VT
VOL
SAME PHASE
INPUT TRANSITION
tPLH
tPHL
tPLH
tPHL
OUTPUT
VIH
VT
0V
OPPOSITE PHASE
INPUT TRANSITION
LVC Link
Propagation Delay
Pulse (1, 2)
Generator
tPZL
GND
500
VOUT
OUTPUT
SWITCH
NORMALLY CLOSED
LOW
tPZH
OUTPUT SWITCH
NORMALLY
OPEN
HIGH
D.U.T.
500
RT
CL
Test Circuit for All Outputs
VIH
VT
0V
CONTROL
INPUT
Open
VIN
DISABLE
ENABLE
VLOAD
VCC
tPLZ
VLOAD/2
VT
VLOAD/2
VLZ
VOL
tPHZ
VOH
VHZ
0V
VT
0V
LVC Link
LVC 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
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.
DATA
INPUT
SWITCH POSITION
Switch
Open Drain
Disable Low
Enable Low
VLOAD
ASYNCHRONOUS
CONTROL
Disable High
Enable High
GND
SYNCHRONOUS
CONTROL
All Other Tests
Open
OUTPUT 1
tPLH1
tSK (x)
tSK (x)
tPLH2
tH
Set-up, Hold, and Release Times
VOH
VT
VOL
VT
tW
HIGH-LOW-HIGH
PULSE
VT
LVC Link
tPHL2
Pulse Width
tSK(x) = tPLH2 - tPLH1 or tPHL2 - tPHL1
Output Skew - tSK(X)
tSU
LOW-HIGH-LOW
PULSE
VOH
VT
VOL
OUTPUT 2
tREM
LVC Link
VIH
VT
0V
tPHL1
tH
TIMING
INPUT
Test
INPUT
tSU
VIH
VT
0V
VIH
VT
0V
VIH
VT
0V
VIH
VT
0V
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
IDT74LVCHR162245A
3.3V CMOS 16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
ORDERING INFORMATION
X
LVC
XX
Bus-Hold
Temp. Range
XX
Family
XX
XXXX
Device Type Package
X
Blank
8
Tube or Tray
Tape and Reel
PAG
Thin Shrink Small Outline Package - Green
245A
16-Bit Bus Transceiver with 3-State Outputs
R162
Double-Density with Resistors, ±12mA
H
Bus-hold
74
-40°C to +85°C
DATASHEET DOCUMENT HISTORY
10/06/2015
Pg. 6
Updated the ordering information by removing non RoHS part and adding Tape and Reel information.
6
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