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IDT74ALVCH16245 3.3V CMOS 16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
3.3V CMOS 16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS AND BUS-HOLD
* 0.5 MICRON CMOS Technology * 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 * VCC = 2.5V 0.2V * CMOS power levels (0.4 W typ. static) * Rail-to-Rail output swing for increased noise margin * Available in SSOP, TSSOP, and TVSOP packages
IDT74ALVCH16245
FEATURES:
DESCRIPTION:
DRIVE FEATURES:
* High Output Drivers: 24mA * Suitable for heavy loads
APPLICATIONS:
This 16-bit bus transceiver is built using advanced dual metal CMOS technology. The ALVCH16245 is designed for asynchronous communication between data buses. The control-function implementation minimizes external timing requirements. This device can be used as two 8-bit transceivers or one 16-bit transceiver. It allows data transmission 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 that the buses are effectively isolated. The ALVCH16245 has been designed with a 24mA output driver. This driver is capable of driving a moderate to heavy load while maintaining speed performance. The ALVCH16245 has "bus-hold" which retains the inputs' last state whenever the input bus goes to a high impedance. This prevents floating inputs and eliminates the need for pull-up/down resistors.
* 3.3V high speed systems * 3.3V and lower voltage computing systems
FUNCTIONAL BLOCK DIAGRAM
1DIR
1
2DIR
48
24 25 36 13 35
1OE 2A1
2OE
1A1
47 2 46
1B1 2A2
2B1
1A2
3 44 5 43 6 41 8 40 9 38 11
1B2 2A3 1B3 2A4 1B4 2A5 1B5 2A6 1B6 2A7 1B7
26 27 29 30 32 33
14
2B2
1A3
16
2B3
1A4
17
2B4
1A5
19
2B5
1A6
20
2B6
1A7
22
2B7
1A8
37
2A8
12
1B8
23
2B8
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
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(c) 1999 Integrated Device Technology, Inc.
MARCH 1999
DSC-4697/1
IDT74ALVCH16245 3.3V CMOS 16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
PIN CONFIGURATION
ABSOLUTE MAXIMUM RATINGS(1)
Symbol Description Max VTERM(2) Terminal Voltage with Respect to GND Terminal Voltage with Respect to GND Storage Temperature DC Output Current Continuous Clamp Current, VI < 0 or VI > VCC Continuous Clamp Current, VO < 0 Continuous Current through each VCC or GND -0.5 to +4.6 -0.5 to VCC+0.5 -65 to +150 -50 to +50 50 -50 100 VTERM(3) TSTG IOUT IIK IOK ICC ISS
Unit V V C mA mA mA mA
1DIR 1B1 1B2
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25
1OE 1A1 1A2
GND
1B3 1B4
GND
1A3 1A4
VCC
1B5 1B6
VCC
1A5 1A6
GND
1B7 1B8 2B1 2B2
GND
1A7 1A8 2A1 2A2
NOTES: 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. 2. VCC terminals. 3. All terminals except VCC.
CAPACITANCE (TA = +25C, F = 1.0MHz)
Symbol CIN COUT CI/O Parameter(1) Input Capacitance Output Capacitance I/O Port Capacitance Conditions VIN = 0V VOUT = 0V VIN = 0V Typ. 5 7 7 Max. 7 9 9 Unit pF pF pF
GND
2B3 2B4
GND
2A3 2A4
NOTE: 1. As applicable to the device type.
VCC
2B5 2B6
VCC
2A5 2A6
PIN DESCRIPTION
Pin Names xOE DIR xAx xBx Description Output Enable Inputs (Active LOW) Direction Control Inputs Side A Inputs or 3-State Outputs(1) Side B Inputs or 3-State Outputs(1)
GND
2B7 2B8 2DIR
GND
2A7 2A8 2OE
NOTE: 1. These pins have "Bus-Hold". All other pins are standard inputs, outputs, or I/Os.
SSOP/ TSSOP/ TVSOP TOP VIEW
FUNCTION TABLE (EACH 8-BIT SECTION)(1)
Inputs xOE L L H
NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level X = Don't Care
xDIR L H X
Outputs Bus B Data to Bus A Bus A Data to Bus B High Z state
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IDT74ALVCH16245 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 = -40C to +85C
Symbol VIH VIL IIH IIL IOZH IOZL VIK VH ICCL ICCH ICCZ ICC Parameter Input HIGH Voltage Level Input LOW Voltage Level Input HIGH Current Input LOW Current High Impedance Output Current (3-State Output pins) Clamp Diode Voltage Input Hysteresis Quiescent Power Supply Current VCC = 2.3V, IIN = -18mA VCC = 3.3V VCC = 3.6V VIN = GND or VCC One input at VCC - 0.6V, other inputs at VCC or GND VCC = 2.3V to 2.7V VCC = 2.7V to 3.6V VCC = 2.3V to 2.7V VCC = 2.7V to 3.6V VCC = 3.6V VCC = 3.6V VCC = 3.6V VI = VCC VI = GND VO = VCC VO = GND Test Conditions Min. 1.7 2 -- -- -- -- -- -- -- -- -- Typ.(1) -- -- -- -- -- -- -- -- -0.7 100 0.1 Max. -- -- 0.7 0.8 5 5 10 10 -1.2 -- 40 V mV A A A A V Unit V
Quiescent Power Supply Current Variation
--
--
750
A
NOTE: 1. Typical values are at VCC = 3.3V, +25C ambient.
BUS-HOLD CHARACTERISTICS
Symbol IBHH IBHL IBHH IBHL IBHHO IBHLO
NOTES: 1. Pins with Bus-Hold are identified in the pin description. 2. Typical values are at VCC = 3.3V, +25C ambient.
Parameter(1) Bus-Hold Input Sustain Current Bus-Hold Input Sustain Current Bus-Hold Input Overdrive Current VCC = 3V VCC = 2.3V VCC = 3.6V
Test Conditions VI = 2V VI = 0.8V VI = 1.7V VI = 0.7V VI = 0 to 3.6V
Min. - 75 75 - 45 45 --
Typ.(2) -- -- -- -- --
Max. -- -- -- -- 500
Unit A A A
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IDT74ALVCH16245 3.3V CMOS 16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
OUTPUT DRIVE CHARACTERISTICS
Symbol VOH Parameter Output HIGH Voltage VCC = 2.3V VCC = 2.3V VCC = 2.7V VCC = 3V VCC = 3V VOL Output LOW Voltage VCC = 2.3V to 3.6V VCC = 2.3V VCC = 2.7V VCC = 3V IOH = - 24mA IOL = 0.1mA IOL = 6mA IOL = 12mA IOL = 12mA IOL = 24mA Test Conditions(1) VCC = 2.3V to 3.6V IOH = - 0.1mA IOH = - 6mA IOH = - 12mA Min. VCC - 0.2 2 1.7 2.2 2.4 2 -- -- -- -- -- Max. -- -- -- -- -- -- 0.2 0.4 0.7 0.4 0.55 V Unit 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 = - 40C to + 85C.
OPERATING CHARACTERISTICS, TA = 25C
VCC = 2.5V 0.2V Symbol CPD CPD Parameter Power Dissipation Capacitance Outputs enabled Power Dissipation Capacitance Outputs disabled Test Conditions CL = 0pF, f = 10Mhz Typical 22 4 VCC = 3.3V 0.3V Typical 29 5 Unit pF
SWITCHING CHARACTERISTICS(1)
VCC = 2.5V 0.2V Symbol tPLH tPHL tPZH tPZL tPHZ tPLZ tSK(o) Parameter Propagation Delay xAx to xYx Output Enable Time xOE to xYx Output Disable Time xOE to xYx Output Skew(2) 1 5.2 1 5.7 Min. 1 Max. 3.7 Min. VCC = 2.7V Max. 3.6 5.4 4.6 VCC = 3.3V 0.3V Min. 1 1 1 Max. 3 4.4 4.1 500 Unit ns ns ns ps
-- -- -- --
--
--
--
--
NOTES: 1. See TEST CIRCUITS AND WAVEFORMS. TA = - 40C to + 85C. 2. Skew between any two outputs of the same package and switching in the same direction.
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IDT74ALVCH16245 3.3V CMOS 16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
VIH VT 0V VOH VT VOL VIH VT 0V
ALVC Link
TEST CIRCUITS AND WAVEFORMS TEST CONDITIONS
Symbol VLOAD VIH VT VLZ VHZ CL VCC(1)= 3.3V0.3V VCC(1)= 2.7V 6 2.7 1.5 300 300 50
VCC 500 Pulse Generator
(1, 2)
SAME PHASE INPUT TRANSITION
VCC(2)= 2.5V0.2V 2 x Vcc Vcc Vcc / 2 150 150 30
Unit V V V mV mV pF
VLOAD Open GND
tPLH OUTPUT tPLH OPPOSITE PHASE INPUT TRANSITION
tPHL
6 2.7 1.5 300 300 50
tPHL
Propagation Delay
ENABLE CONTROL INPUT tPZL OUTPUT SWITCH NORMALLY CLOSED LOW tPZH OUTPUT SWITCH NORMALLY OPEN HIGH VLOAD/2 VT tPHZ VT 0V tPLZ DISABLE VIH VT 0V VLOAD/2 VLZ VOL VOH VHZ 0V
ALVC Link
VIN D.U.T.
VOUT
RT
500 CL
ALVC Link
Test Circuit for All Outputs
DEFINITIONS: CL = Load capacitance: includes jig and probe capacitance. RT = Termination resistance: should be equal to ZOUT of the Pulse Generator. NOTES: 1. Pulse Generator for All Pulses: Rate 1.0MHz; tF 2.5ns; tR 2.5ns. 2. Pulse Generator for All Pulses: Rate 1.0MHz; tF 2ns; tR 2ns.
SWITCH POSITION
Test Open Drain Disable Low Enable Low Disable High Enable High All Other Tests Switch VLOAD GND Open
VIH INPUT VT 0V VOH OUTPUT 1 VT VOL VOH OUTPUT 2 tPLH2 tPHL2
ALVC Link
NOTE: 1. Diagram shown for input Control Enable-LOW and input Control Disable-HIGH. VIH DATA VT INPUT 0V tSU tH VIH TIMING VT INPUT 0V tREM VIH ASYNCHRONOUS VT CONTROL 0V VIH SYNCHRONOUS VT CONTROL tSU 0V tH
ALVC Link
Enable and Disable Times
Set-up, Hold, and Release Times
tPLH1
tPHL1
LOW-HIGH-LOW PULSE tW HIGH-LOW-HIGH PULSE
VT
tSK (x)
tSK (x)
VT VOL
VT
ALVC Link
Pulse Width
tSK(x) = tPLH2 - tPLH1 or tPHL2 - tPHL1
Output Skew - tSK(X)
NOTES: 1. For tSK(o) OUTPUT1 and OUTPUT2 are any two outputs. 2. For tSK(b) OUTPUT1 and OUTPUT2 are in the same bank.
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IDT74ALVCH16245 3.3V CMOS 16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
ORDERING INFORMATION
IDT XX ALVC X Bus-Hold Temp. Range XX Family XX XXX Device Type Package
PV PA PF 245
Shrink Small Outline Package Thin Shrink Small Outline Package Thin Very Small Outline Package 16-Bit Bus Transceiver with 3-State Outputs
16
Double-Density, 24mA
H 74
Bus-Hold -40C to +85C
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for Tech Support: logichelp@idt.com (408) 654-6459
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