3.3V CMOS 16-BIT REGISTERED TRANSCEIVER WITH 3-STATE OUTPUTS BUS-HOLD
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IDT74ALVCH16952 3.3V CMOS 16-BIT REGISTERED TRANSCEIVER WITH 3-STATE OUTPUTS
3.3V CMOS 16-BIT REGISTERED TRANSCEIVER WITH 3-STATE OUTPUTS BUS-HOLD
MICRON CMOS Technology 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 2.5V 0.2V CMOS power levels (0.4µ typ. static) Rail-to-Rail output swing increased noise margin Available SSOP, TSSOP, TVSOP packages
IDT74ALVCH16952
FEATURES:
DESCRIPTION:
DRIVE FEATURES:
High Output Drivers: ±24mA Suitable heavy loads
This 16-bit registered transceiver built using advanced dual metal CMOS technology. ALVCH16952 contains sets D-type flip-flops temporary storage data flowing either direction. This device used 8-bit transceivers 16-bit transceiver. Data stored registers low-to-high transition clock (CLKAB CLKBA) input provided that clock-enable (CLKENAB CLKENBA) input low. Taking output-enable (OEAB OEBA) input accesses data either port. ALVCH16952 been designed with ±24mA output driver. This driver capable driving moderate heavy load while maintaining speed performance. ALVCH16952 "bus-hold" which retains inputs' last state whenever input goes high impedance. This prevents floating inputs eliminates need pull-up/down resistors.
APPLICATIONS:
3.3V high speed systems 3.3V lower voltage computing systems
FUNCTIONAL BLOCK DIAGRAM
CLKEN LKBA OEAB CLKEN LKBA OEAB
CLKEN
CLKEN
LKAB
LKAB
OEBA
OEBA
SEVEN OTHER
SEVEN OTHER ANNELS
logo registered trademark Integrated Device Technology, Inc.
©1999 Integrated Device Technology, Inc.
MARCH 1999
DSC-4227/1
IDT74ALVCH16952 3.3V CMOS 16-BIT REGISTERED TRANSCEIVER WITH 3-STATE OUTPUTS
CONFIGURATION
1OEAB 1CLKAB 1CLKENAB
ABSOLUTE MAXIMUM RATINGS(1)
Symbol Description VTERM(2) Terminal Voltage with Respect Terminal Voltage with Respect Storage Temperature Output Current Continuous Clamp Current, Continuous Clamp Current, Continuous Current through each -0.5 +4.6 -0.5 VCC+0.5 +150 ±100
1OEBA 1CLKBA 1CLKENBA
Unit
VTERM(3) TSTG IOUT
NOTES: 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. terminals. terminals except VCC.
DESCRIPTION
Names xOEAB xOEBA xCLKENAB xCLKENBA xCLKAB xCLKBA Description A-to-B Output Enable Input (Active LOW) B-to-A Output Enable Input (Active LOW) A-to-B Clock Enable Input (Active LOW) B-to-A Clock Enable Input (Active LOW) A-to-B Clock Input B-to-A Clock Input A-to-B Data Inputs B-to-A 3-State Outputs(1) B-to-A Data Inputs A-to-B 3-State Outputs(1)
2CLKENAB 2CLKAB 2OEAB
2CLKENBA 2CLKBA 2OEBA
NOTE: These pins have "Bus-Hold". other pins standard inputs, outputs, I/Os.
FUNCTION TABLE(1,2)
Inputs xCLKENAB xCLKAB xOEAB Outputs B(3) B(3)
SSOP/ TSSOP/ TVSOP VIEW
CAPACITANCE +25°C, 1.0MHz)
Symbol COUT COUT Parameter(1) Input Capacitance Output Capacitance Port Capacitance Conditions VOUT Typ. Max. Unit
NOTE: applicable device type.
NOTES: A-to-B data flow shown: B-to-A data flow similar uses xCLKENBA, xCLKBA, xOEBA. HIGH Voltage Level Voltage Level Don't Care High Impedance LOW-to-HIGH Transition Level before indicated steady-state input conditions were established.
IDT74ALVCH16952 3.3V CMOS 16-BIT REGISTERED TRANSCEIVER WITH 3-STATE OUTPUTS
ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified: Operating Condition: -40°C +85°C
Symbol IOZH IOZL ICCL ICCH ICCZ Parameter Input HIGH Voltage Level Input Voltage Level Input HIGH Current Input Current High Impedance Output Current (3-State Output pins) Clamp Diode Voltage Input Hysteresis Quiescent Power Supply Current 2.3V, -18mA 3.3V 3.6V input 0.6V, other inputs 2.3V 2.7V 2.7V 3.6V 2.3V 2.7V 2.7V 3.6V 3.6V 3.6V 3.6V Test Conditions Min. Typ.(1) -0.7 Max. -1.2 Unit
Quiescent Power Supply Current Variation
NOTE: Typical values 3.3V, +25°C ambient.
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
IDT74ALVCH16952 3.3V CMOS 16-BIT REGISTERED TRANSCEIVER 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, 25°C
2.5V 0.2V Symbol Parameter Power Dissipation Capacitance Outputs enabled Power Dissipation Capacitance Outputs disabled Test Conditions 0pF, 10Mhz Typical 3.3V 0.3V Typical Unit
SWITCHING CHARACTERISTICS(1)
2.5V 0.2V Symbol fMAX tPLH tPHL tPZH tPZL tPHZ tPLZ tSK(o) Propagation Delay Output Enable Time xOEBA xOEAB Output Disable Time xOEBA xOEAB Setup Time, data before Hold Time, data after Setup Time, CLKEN before Hold Time, CLKEN after Pulse Duration, CLKEN HIGH Pulse Duration, HIGH Output Skew(2) Parameter Min. Max. 2.7V 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.
IDT74ALVCH16952 3.3V CMOS 16-BIT REGISTERED TRANSCEIVER 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
SAME PHASE INPUT TRANSITION tPLH OUTPUT tPLH OPPOSITE PHASE INPUT TRANSITION tPHL tPHL
ALVC Link
Propagation Delay
ENABLE CONTROL INPUT tPZL OUTPUT SWITCH NORMALLY CLOSED tPZH OUTPUT SWITCH NORMALLY OPEN HIGH VLOAD/2 tPHZ tPLZ DISABLE
Pulse Generator
VLOAD Open
VLOAD/2
ALVC Link
D.U.T.
VOUT
ALVC Link
Test Circuit Outputs
DEFINITIONS: Load capacitance: includes probe capacitance. Termination resistance: should equal ZOUT Pulse Generator. NOTES: Pulse Generator Pulses: Rate 1.0MHz; 2.5ns; 2.5ns. Pulse Generator Pulses: Rate 1.0MHz; 2ns; 2ns.
NOTE: Diagram shown input Control Enable-LOW input Control Disable-HIGH.
Enable Disable Times
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
ALVC Link
INPUT
tPLH1
tPHL1
Set-up, Hold, Release Times
OUTPUT
LOW-HIGH-LOW PULSE HIGH-LOW-HIGH PULSE
OUTPUT tPLH2 tPHL2
ALVC Link
tSK(x) tPLH2 tPLH1 tPHL2 tPHL1
ALVC Link
Pulse Width
Output Skew tSK(X)
NOTES: tSK(o) OUTPUT1 OUTPUT2 outputs. tSK(b) OUTPUT1 OUTPUT2 same bank.
IDT74ALVCH16952 3.3V CMOS 16-BIT REGISTERED TRANSCEIVER WITH 3-STATE OUTPUTS
ORDERING INFORMATION
ALVC Bus-Hold Temp. Range Family Device Type Package
Shrink Small Outline Package Thin Shrink Small Outline Package Thin Very Small Outline Package 16-Bit Registered Transceiver with 3-State Outputs Double-Density, ±24mA Bus-hold 40°C +85°C
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