3.3V CMOS IDT74LVCH16244A 16-BIT BUFFER/DRIVER WITH 3-STATE OUTPUTS, V
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IDT74LVCH16244A 3.3V CMOS 16-BIT BUFFER/DRIVER WITH 3-STATE OUTPUTS
3.3V CMOS IDT74LVCH16244A 16-BIT BUFFER/DRIVER WITH 3-STATE OUTPUTS, VOLT TOLERANT BUS-HOLD
Typical tSK(o) (Output Skew) 250ps 2000V MIL-STD-883, Method 3015; 200V using machine model 200pF, 3.3V 0.3V, Normal Range 2.7V 3.6V, Extended Range CMOS power levels (0.4 typ. static) inputs, outputs, tolerant Available SSOP TSSOP packages
DESCRIPTION:
LVCH16244A 16-bit buffer/driver built using advanced dual metal CMOS technology. LVCH16244A designed specifically improve performance density 3-state memory address drivers, clock drivers, bus-oriented receivers transmitters. device used four 4-bit buffers, 8-bit buffers, 16-bit buffer. This device provides true outputs symmetrical active-low output-enable (OE) inputs. pins this 16-bit buffer/driver driven from either 3.3V devices. This feature allows this device translator mixed 3.3V/5V supply system. LVCH16244A been designed with ±24mA output driver. driver capable driving moderate heavy load while maintaining speed performance. LVCH16244A "bus-hold" which retains inputs' last state whenever input goes high impedance. This prevents floating inputs eliminates need pull-up/down resistors.
DRIVE High Output Drivers: ±24mA Reduced system switching noise
APPLICATIONS:
3.3V mixed voltage systems Data communication telecommunication systems
FUNCTIONAL BLOCK DIAGRAM
logo registered trademark Integrated Device Technology, Inc.
1999 Integrated Device Technology, Inc.
MARCH 1999
DSC-4728/2
IDT74LVCH16244A 3.3V CMOS 16-BIT BUFFER/DRIVER WITH 3-STATE OUTPUTS
CONFIGURATION
ABSOLUTE MAXIMUM RATINGS(1)
Symbol VTERM Description Terminal Voltage with Respect Storage Temperature Output Current Continuous Clamp Current, Continuous Current through each -0.5 +6.5 +150 ±100 Unit
TSTG IOUT
NOTE: Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS cause permanent damage device. This stress rating only functional operation device these other conditions above those indicated operational sections this specification implied. Exposure absolute maximum rating conditions extended periods affect reliability.
CAPACITANCE +25°C, 1.0MHz)
Symbol COUT CI/O Parameter(1) Input Capacitance Output Capacitance Port Capacitance Conditions VOUT Typ. Max. Unit
NOTE: applicable device type.
DESCRIPTION
Names Data Inputs(1) 3-State Outputs 3-State Output Enable Inputs (Active LOW) Description
NOTE: These pins have "Bus-Hold". other pins standard inputs, outputs, I/Os.
FUNCTION TABLE (EACH 4-BIT BUFFER)(1)
Inputs Outputs
SSOP/ TSSOP VIEW
NOTES: HIGH Voltage Level Don't Care Voltage Level High-Impedance
IDT74LVCH16244A 3.3V CMOS 16-BIT BUFFER/DRIVER WITH 3-STATE OUTPUTS
ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified: Operating Condition: -40°C +85°C
Symbol Parameter Input HIGH Voltage Level 2.3V 2.7V 2.7V 3.6V IOZH IOZL IOFF ICCL ICCH ICCZ High Impedance Output Current (3-State Output pins) Input/Output Power Leakage Clamp Diode Voltage Input Hysteresis Quiescent Power Supply Current 5.5V 2.3V, -18mA 3.3V 3.6V -0.7 -1.2 3.6V 5.5V Input Voltage Level Input Leakage Current 2.3V 2.7V 2.7V 3.6V 3.6V 5.5V Test Conditions Min. Typ.(1) Max. Unit
Quiescent Power Supply Current Variation
5.5V(2) input 0.6V, other inputs
NOTES: Typical values 3.3V, +25°C ambient. This applies disabled state only.
BUS-HOLD CHARACTERISTICS
Symbol IBHH IBHL IBHH IBHL IBHHO IBHLO
NOTES: Pins with Bus-Hold identified description. Typical values 3.3V, +25°C ambient.
Parameter(1) Bus-Hold Input Sustain Current Bus-Hold Input Sustain Current Bus-Hold Input Overdrive Current 2.3V 3.6V
Test Conditions 0.8V 1.7V 0.7V 3.6V
Min.
Typ.(2)
Max. ±500
Unit
IDT74LVCH16244A 3.3V CMOS 16-BIT BUFFER/DRIVER WITH 3-STATE OUTPUTS
OUTPUT DRIVE CHARACTERISTICS
Symbol Parameter Output HIGH Voltage 2.3V 2.3V 2.7V Output Voltage 2.3V 3.6V 2.3V 2.7V 24mA 0.1mA 12mA 12mA 24mA Test Conditions(1) 2.3V 3.6V 0.1mA 12mA Min. Max. 0.55 Unit
NOTE: must within min. max. range shown ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE table appropriate range. 40°C 85°C.
OPERATING CHARACTERISTICS, 3.3V 0.3V, 25°C
Symbol Parameter Power Dissipation Capacitance Buffer/Driver Outputs enabled Power Dissipation Capacitance Buffer/Driver Outputs disabled Test Conditions 0pF, 10Mhz Typical Unit
SWITCHING CHARACTERISTICS(1)
2.7V Symbol tPLH tPHL tPZH tPZL tPHZ tPLZ tSK(o) Parameter Propagation Delay Output Enable Time Output Disable Time Output Skew(2) Min. Max. 3.3V 0.3V Min. Max. Unit
NOTES: TEST CIRCUITS WAVEFORMS. 40°C 85°C. Skew between outputs same package switching same direction.
IDT74LVCH16244A 3.3V CMOS 16-BIT BUFFER/DRIVER WITH 3-STATE OUTPUTS
TEST CIRCUITS WAVEFORMS TEST CONDITIONS
Symbol VLOAD VCC(1)= 3.3V±0.3V VCC(1)= 2.7V VCC(2)= 2.5V±0.2V Unit
OPPOSITE PHASE INPUT TRANSITION OUTPUT tPLH tPHL SAME PHASE INPUT TRANSITION tPLH tPHL
Link
Propagation Delay
Pulse Generator D.U.T.
Link
VLOAD Open CONTROL INPUT
ENABLE
DISABLE
tPZL OUTPUT SWITCH NORMALLY CLOSED tPZH OUTPUT SWITCH NORMALLY OPEN HIGH VLOAD/2 tPHZ
tPLZ
VLOAD/2
Link
VOUT
Test Circuit Outputs
DEFINITIONS: Load capacitance: includes probe capacitance. Termination resistance: should equal ZOUT Pulse Generator. NOTES: Pulse Generator Pulses: Rate 10MHz; 2.5ns; 2.5ns. Pulse Generator Pulses: Rate 10MHz; 2ns; 2ns.
Enable Disable Times
NOTE: Diagram shown input Control Enable-LOW input Control Disable-HIGH.
SWITCH POSITION
Test Open Drain Disable Enable Disable High Enable High Other Tests Switch VLOAD Open
DATA INPUT TIMING INPUT ASYNCHRONOUS CONTROL SYNCHRONOUS CONTROL
tREM
Link
INPUT
tPLH1
tPHL1
Set-up, Hold, Release Times
LOW-HIGH-LOW PULSE HIGH-LOW-HIGH PULSE
Link
OUTPUT
OUTPUT tPLH2 tPHL2
tSK(x) tPLH2 tPLH1 tPHL2 tPHL1
Pulse Width
Link
Output Skew tSK(X)
NOTES: tSK(o) OUTPUT1 OUTPUT2 outputs. tSK(b) OUTPUT1 OUTPUT2 same bank.
IDT74LVCH16244A 3.3V CMOS 16-BIT BUFFER/DRIVER WITH 3-STATE OUTPUTS
ORDERING INFORMATION
Bus-Hold Temp. Range Family XXXX Device Type Package
Shrink Small Outline Package SSOP Green Thin Shrink Small Outline Package TSSOP Green
244A 16-Bit Buffer/Driver with 3-State Outputs Double-Density, ±24mA Bus-hold -40°C +85°C
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