IDT IDT74LVC573A

IDT74LVC573A
3.3V CMOS OCTAL TRANSPARENT D-TYPE LATCH
INDUSTRIAL TEMPERATURE RANGE
3.3V CMOS OCTAL
TRANSPARENT D-TYPE LATCH
WITH 3-STATE OUTPUTS
AND 5 VOLT TOLERANT I/O
IDT74LVC573A
DESCRIPTION:
FEATURES:
The LVC573A octal transparent D-type latch is built using advanced dual
metal CMOS technology. The device features 3-state outputs designed
specifically for driving highly capacitive or relatively low-impedance loads,
and is particularly suitable for implementing buffer registers, input-output (I/
O) ports, bidirectional bus drivers, and working registers.
While the latch-enable (LE) input is high, the Q outputs follow the data
(D) inputs. When LE is taken low, the Q outputs are latched at the logic levels
at the D inputs.
A buffered output-enable (OE) input can be used to place the eight
outputs in either a normal logic state (high or low logic levels) or a highimpedance state. In the high-impedance state, the outputs neither load nor
drive the bus lines significantly. The high-impedance state and increased
drive provide the capability to drive bus lines without interface or pullup
components. OE does not affect the internal operations of the latch. Old data
can be retained or new data can be entered while the outputs are in the
high-impedance state.
The LVC573A has been designed with a ±24mA output driver. This
driver is capable of driving a moderate to heavy load while maintaining
speed performance.
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 system environment.
• 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
• Supports hot insertion
• Available in SOIC, SSOP, QSOP, and TSSOP 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
OE
1
LE
11
1D
2
C1
19
1D
1Q
TO SEVEN OTHER CHANNELS
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
MARCH 1999
1
© 1999 Integrated Device Technology, Inc.
DSC-4627/1
IDT74LVC573A
3.3V CMOS OCTAL TRANSPARENT D-TYPE LATCH
INDUSTRIAL TEMPERATURE RANGE
PIN CONFIGURATION
ABSOLUTE MAXIMUM RATINGS(1)
Symbol
Description
Max
Unit
VTERM
Terminal Voltage with Respect to GND
–0.5 to +6.5
V
VCC
TSTG
Storage Temperature
–65 to +150
°C
IOUT
DC Output Current
–50 to +50
mA
OE
1
20
1D
2
19
1Q
IIK
IOK
Continuous Clamp Current,
VI < 0 or VO < 0
–50
mA
2D
3
18
2Q
ICC
ISS
Continuous Current through each
VCC or GND
±100
mA
3D
4
17
3Q
4D
5
16
4Q
5D
6
15
5Q
6D
7
14
6Q
7D
8
13
7Q
8D
9
12
8Q
10
11
LE
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.
Max.
Unit
CIN
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
NOTE:
1. As applicable to the device type.
SOIC/ SSOP/ QSOP/ TSSOP
TOP VIEW
PIN DESCRIPTION
Pin Names
Description
OE
Output Enable Inputs (Active LOW)
LE
Latch Enable Input
xD
Data Inputs
xQ
3-State Data Outputs
FUNCTION TABLE (EACH LATCH)(1)
Inputs
xD
LE
Outputs
OE
xQ
H
H
L
H
L
H
L
L
X
L
L
Q(2)
X
X
H
Z
NOTES:
1. H = HIGH Voltage Level
X = Don’t Care
L = LOW Voltage Level
Z = High-Impedance
2. Output level before the indicated steady-state input conditions were established.
2
IDT74LVC573A
3.3V CMOS OCTAL TRANSPARENT D-TYPE LATCH
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
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
2.2
—
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
IDT74LVC573A
3.3V CMOS OCTAL TRANSPARENT D-TYPE LATCH
INDUSTRIAL TEMPERATURE RANGE
OPERATING CHARACTERISTICS, VCC = 3.3V ± 0.3V, TA = 25°C
Symbol
Parameter
CPD
Power Dissipation Capacitance per Latch Outputs enabled
CPD
Power Dissipation Capacitance per Latch Outputs disabled
Test Conditions
Typical
Unit
CL = 0pF, f = 10Mhz
37
pF
4
SWITCHING CHARACTERISTICS(1)
VCC = 2.7V
Symbol
Parameter
tPLH
Propagation Delay
tPHL
xD to xQ
tPLH
Propagation Delay
tPHL
LE to xQ
tPZH
Output Enable Time
tPZL
OE to xQ
tPHZ
Output Disable Time
tPLZ
OE to xQ
VCC = 3.3V ± 0.3V
Min.
Max.
Min.
Max.
Unit
—
7.7
1.5
6.9
ns
—
8.4
2
7.7
ns
—
8.5
1.5
7.5
ns
—
7
1.6
6.5
ns
3.3
—
3.3
—
ns
2
—
2
—
ns
tW
Pulse Duration LE HIGH
tSU
Set-up Time, data before LE↓
tH
Hold Time, data after LE↓
1.5
—
1.5
—
ns
Output Skew(2)
—
—
—
1
ns
tSK(o)
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
IDT74LVC573A
3.3V CMOS OCTAL TRANSPARENT D-TYPE LATCH
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
IDT74LVC573A
3.3V CMOS OCTAL TRANSPARENT D-TYPE LATCH
INDUSTRIAL TEMPERATURE RANGE
ORDERING INFORMATION
XX
X
LVC
IDT
Temp. Range
Bus-Hold
XXXX
XX
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
573A
Octal Transparent D-Type Latch with 3-State Outputs, ±24mA
Blank
No Bus-hold
74
–40°C to +85°C
CORPORATE HEADQUARTERS
2975 Stender Way
Santa Clara, CA 95054
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