IDT74LVCH16245A 3.3V CMOS 16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS INDUSTRIAL TEMPERATURE RANGE IDT74LVCH16245A 3.3V CMOS 16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS, 5 VOLT TOLERANT I/O AND BUS-HOLD FEATURES: DESCRIPTION: • 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 • Available in SSSOP and TSSOP packages This 16-bit bus transceiver is built using advanced dual metal CMOS technology. This high-speed, low power transceiver is ideal for asynchronous communication between two busses (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 LVCH16245A has been designed with a ±24mA output driver. This driver is capable of driving a moderate to heavy load while maintaining speed performance. The LVCH16245A 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. 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 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 20 1B6 38 2A7 22 1B7 2B7 37 2A8 12 2B6 27 11 1A8 2B5 29 9 1A7 2B2 33 44 5 1A4 2B1 35 46 26 23 1B8 2B8 The IDT logo is a registered trademark of Integrated Device Technology, Inc. INDUSTRIAL TEMPERATURE RANGE OCTOBER 2008 1 © 2006 Integrated Device Technology, Inc. DSC-4596/4 IDT74LVCH16245A 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 VCC 7 42 VCC 1B5 8 41 1A5 1B6 9 40 1A6 GND 10 39 GND 1B7 11 38 1A7 1B8 12 37 1A8 2B1 13 36 2A1 Description Max 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. CAPACITANCE (TA = +25°C, F = 1.0MHz) Parameter(1) Symbol Conditions Typ. Max. 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 14 35 2A2 GND 15 34 GND 2B3 16 33 2A3 2B4 17 32 2A4 VCC 18 31 VCC xOE 2B5 19 30 2A5 xDIR Direction Control Input xAx Side A Inputs or 3-State Outputs(1) xBx Side B Inputs or 3-State Outputs(1) PIN DESCRIPTION Pin Names 20 29 2A6 GND 21 28 GND 2B7 22 27 2A7 2B8 23 26 2A8 2DIR 24 25 2OE Unit NOTE: 1. As applicable to the device type. 2B2 2B6 Unit Description Output Enable Inputs (Active LOW) 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 SSOP/ TSSOP TOP VIEW xOE xDIR L L Bus B Data to Bus A L H Bus A Data to Bus B H X Isolation NOTES: 1. H = HIGH Voltage Level X = Don’t Care L = LOW Voltage Level 2 Outputs IDT74LVCH16245A 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 VI = 0.8V 75 — — VI = 1.7V — — — 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 Bus-Hold Input Sustain Current VCC = 2.3V Bus-Hold Input Overdrive Current VCC = 3.6V VI = 2V 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, +25°C ambient. 3 VI = 0.7V — — — VI = 0 to 3.6V — — ±500 µA µA IDT74LVCH16245A 3.3V CMOS 16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS INDUSTRIAL TEMPERATURE RANGE OUTPUT DRIVE CHARACTERISTICS Symbol VOH VOL Test Conditions(1) Parameter Output HIGH Voltage Output LOW Voltage Min. Max. Unit V VCC = 2.3V to 3.6V IOH = – 0.1mA VCC – 0.2 — 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. 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 40 pF 4 SWITCHING CHARACTERISTICS(1) VCC = 2.7V Symbol VCC = 3.3V ± 0.3V Parameter Min. Max. Min. Max. Unit tPLH Propagation Delay — 4.7 1 4 ns tPHL xAx to xBx, xBx to xAx tPZH Output Enable Time — 6.7 1.5 5.5 ns tPZL xOE to xAx or xBx tPHZ Output Disable Time — 7.1 1.5 6.6 ns tPLZ xOE to xAx or xBx — — — 1 ns tSK(o) Output Skew(2) 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 IDT74LVCH16245A 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 500Ω VOUT OUTPUT SWITCH NORMALLY CLOSED LOW tPZH OUTPUT SWITCH NORMALLY OPEN HIGH D.U.T. 500Ω 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 IDT74LVCH16245A 3.3V CMOS 16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS INDUSTRIAL TEMPERATURE RANGE ORDERING INFORMATION LVC X XX Bus-Hold Temp. Range XX Family XX XXXX Device Type Package PV PVG PA PAG Shrink Small Outline Package SSOP - Green Thin Shrink Small Outline Package TSSOP - Green 245A 16-Bit Bus Transceiver with 3-State Outputs CORPORATE HEADQUARTERS 6024 Silver Creek Valley Road San Jose, CA 95138 16 Double-Density, ±24mA H Bus-hold 74 -40°C to +85°C for SALES: 800-345-7015 or 408-284-8200 fax: 408-284-2775 www.idt.com 6 for Tech Support: [email protected]