PI74LPT16240CA - Pericom Semiconductor

PI74LPT16240

3.3V 16-BIT BUFFER/LINE DRIVER

1PS2066A 01/15/97

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Logic Block Diagram

0 1

1 1

2 1

3 1

0 3

1 3

2 3

3 3

0 2

1 2

2 2

3 2

0 4

1 4

2 4

3 4

PI74LPT16240

Fast CMOS 3.3V 16-Bit

Buffer/Line Driver

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Product Features:

• Compatible with LCX™ and LVT™ families of products

• Supports 5V Tolerant Mixed Signal Mode Operation

– Input can be 3V or 5V

– Output can be 3V or connected to 5V bus

• Advanced Low Power CMOS Operation

• Excellent output drive capability:

Balanced drives (24 mA sink and source)

• Pin compatible with industry standard double-density

pinouts

• Low ground bounce outputs

• Hysteresis on all inputs

• Industrial operating temperature range: –40°C to +85°C

• Multiple center pins and distributed Vcc/GND pins

minimize switching noise

• Packages available:

– 48-pin 240 mil wide thin plastic TSSOP (A)

– 48-pin 300 mil wide plastic SSOP (V)

Product Description:

Pericom Semiconductor’s PI74LPT series of logic circuits are pro-

duced in the Company’s advanced 0.6 micron CMOS technology,

achieving industry leading speed grades.

The PI74LPT16240 is an inverting 16-bit buffer/line driver designed

for applications driving high-capacitance loads and low impedance

backplanes. This high-speed, low power device offers bus/backplane

interface capability and a flow-through organization for ease of

board layout. This device is designed with three-state controls to

operate in a Quad-Nibble, Dual-Byte, or a single 16-bit word mode.

The PI74LPT16240 can be driven from either 3.3V or 5.0V devices

allowing this device to be used as a translator in a mixed

3.3/5.0V system.

PI74LPT16240

3.3V 16-BIT BUFFER/LINE DRIVER

2PS2066A 01/15/97

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Product Pin Description

Pin Name Description

XOE 3-State Output Enable Inputs (Active LOW)

xAx Inputs

xYx 3-State Outputs

GND Ground

VCC Power

Inputs(1) Outputs(1)

XOE xAx xYx

LL H

LH L

HX Z

Truth Table

NOTE: 1. H = High Voltage Level, X = Don't Care, L = Low

Voltage Level, Z = High Impedance

Product Pin Configuration

1OE

1Y0

1Y1

GND

1Y2

1Y3

VCC

2Y0

2Y1

GND

2Y2

2Y3

3Y0

3Y1

GND

3Y2

3Y3

VCC

4Y0

4Y1

GND

4Y2

4Y3

4OE

48-PIN

V48

A48

2OE

1A0

1A1

GND

1A2

1A3

VCC

2A0

2A1

GND

2A2

2A3

3A0

3A1

GND

3A2

3A3

VCC

4A0

4A1

GND

4A2

4A3

3OE

Note:

1. This parameter is determined by device characterization but is not production tested.

Capacitance (TA = 25°C, f = 1 MHz)

Parameters(1) Description Test Conditions Typ Max. Units

CIN Input Capacitance VIN = 0V 4.5 6 pF

COUT Output Capacitance VOUT = 0V 5.5 8 pF

PI74LPT16240

3.3V 16-BIT BUFFER/LINE DRIVER

3PS2066A 01/15/97

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DC Electrical Characteristics (Over the Operating Range, TA = –40°C to +85°C, VCC = 2.7V to 3.6V)

Parameters Description Test Conditions(1) Min. Typ(2) Max. Units

VIH Input HIGH Voltage (Input pins) Guaranteed Logic HIGH Level 2.2 — 5.5 V

Input HIGH Voltage (I/O pins) 2.0 — 5.5 V

VIL Input LOW Voltage Guaranteed Logic LOW Level –0.5 — 0.8 V

(Input and I/O pins)

IIH Input HIGH Current (Input pins) VCC = Max. VIN = 5.5V — — ±1 µA

Input HIGH Current (I/O pins) VCC = Max. VIN = VCC ——±1µA

IIL Input LOW Current (Input pins) VCC = Max. VIN = GND — — ±1 µA

Input LOW Current (I/O pins) VCC = Max. VIN = GND — — ±1 µA

IOZH High Impedance Output Current VCC = Max. VOUT = 5.5V — — ±1 µA

IOZL (3-State Output pins) VCC = Max. VOUT = GND — — ±1 µA

VIK Clamp Diode Voltage VCC = Min., IIN = –18 mA — –0.7 –1.2 V

IODH Output HIGH Current VCC = 3.3V, VIN = VIH or VIL, VO = 1.5V(3) –36 –60 –110 mA

IODL Output LOW Current VCC = 3.3V, VIN = VIH or VIL, VO = 1.5V(3) 50 90 200 mA

VOH Output HIGH Voltage VCC = Min. IOH = –0.1 mA Vcc-0.2 — — V

VIN = VIH or VIL IOH = –3 mA 2.4 3.0 — V

VCC = 3.0V, IOH = –8 mA 2.4(5) 3.0 — V

VIN = VIH or VIL IOH = –24 mA 2.0 — —

VOL Output LOW Voltage VCC = Min. IOL = 0.1 mA — — 0.2 V

VIN = VIH or VIL IOL = 16 mA — 0.2 0.4 V

IOL = 24 mA — 0.3 0.5 V

IOS Short Circuit Current(4) VCC = Max.(3), VOUT = GND –60 –85 –240 mA

IOFF Power Down Disable VCC = 0V, VIN or VOUT ≤ 4.5V — — ±100 µA

VHInput Hysteresis — 150 — mV

Maximum Ratings

(Above which the useful life may be impaired. For user guidelines, not tested.)

Note:

Stresses greater than those listed under 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 condi-

tions above those indicated in the operational sec-

tions of this specification is not implied. Exposure to

absolute maximum rating conditions for extended

periods may affect reliability.

Notes:

1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type.

2. Typical values are at Vcc = 3.3V, +25°C ambient and maximum loading.

3. Not more than one output should be shorted at one time. Duration of the test should not exceed one second.

4. This parameter is guaranteed but not tested.

5. VOH = VCC – 0.6V at rated current.

Storage Temperature.............................................................–55°C to +125°C

Ambient Temperature with Power Applied............................–40°C to +85°C

Supply Voltage to Ground Potential (Inputs & Vcc Only)......–0.5V to +7.0V

Supply Voltage to Ground Potential (Outputs & D/O Only) ..–0.5V to +7.0V

DC Input Voltage ....................................................................–0.5V to +7.0V

DC Output Current ..............................................................................120 mA

Power Dissipation.................................................................................... 1.0W

PI74LPT16240

3.3V 16-BIT BUFFER/LINE DRIVER

4PS2066A 01/15/97

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Power Supply Characteristics

Parameters Description Test Conditions(1) Min. Typ(2) Max. Units

ICC Quiescent Power Supply Current VCC = Max. VIN = GND or VCC 0.1 10 µA

∆ICC Quiescent Power Supply Current VCC = Max. VIN = VCC – 0.6V (3) 2.0 30 µA

TTL Inputs HIGH

ICCD Dynamic Power Supply(4) VCC = Max., VIN = VCC 50 75 µA/

Outputs Open VIN = GND MHz

XOE = GND

One Bit Toggling

50% Duty Cycle

ICTotal Power Supply VCC = Max., VIN = VCC – 0.6V 0.6 2.3 mA

Current(6) Outputs Open VIN = GND

fI = 10 MHZ

50% Duty Cycle

XOE = GND

One Bit Toggling

VCC = Max., VIN = VCC – 0.6V 2.1 4.7(5)

Outputs Open VIN = GND

fI = 2.5 MHZ

50% Duty Cycle

XOE = GND

16 Bits Toggling

Notes:

1. For Max. or Min. condition, use appropriate value specified under Electrical Characteristics for the applicable device.

2. Typical values are at Vcc = 3.3V, +25°C ambient.

3. Per TTL driven input; all other inputs at Vcc or GND.

4. This parameter is not directly testable, but is derived for use in Total Power Supply Calculations.

5. Values for these conditions are examples of the Icc formula. These limits are guaranteed but not tested.

6. IC =IQUIESCENT + IINPUTS + IDYNAMIC

IC = ICC + ∆ICC DHNT + ICCD (fCP/2 + fINI)

ICC = Quiescent Current (ICCL, ICCH and ICCZ)

∆ICC = Power Supply Current for a TTL High Input

DH = Duty Cycle for TTL Inputs High

NT = Number of TTL Inputs at DH

ICCD = Dynamic Current Caused by an Input Transition Pair (HLH or LHL)

fCP = Clock Frequency for Register Devices (Zero for Non-Register Devices)

NCP = Number of Clock Inputs at fCP

fI = Input Frequency

NI = Number of Inputs at fI

All currents are in milliamps and all frequencies are in megahertz.

PI74LPT16240

3.3V 16-BIT BUFFER/LINE DRIVER

5PS2066A 01/15/97

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Switching Characteristics over Operating Range(1)

LPT16240 LPT16240A LPT16240C

Com. Com. Com.

Parameters Description Conditions (2) Min(3) Max Min(3) Max Min(3) Max Unit

tPLH Propagation Delay CL = 50 pF 1.5 4.9 1.5 4.8 1.5 4.3 ns

tPHL XAX to XYXRL = 500Ω

tPZH Output Enable Time 1.5 7.0 1.5 6.2 1.5 5.8 ns

tPZL xOE to xYx

tPHZ Output Disable Time(4) 1.5 7.0 1.5 5.6 1.5 5.2 ns

tPLZ xOE to xYx

tSK(o) Output Skew(5) 0.5 0.5 0.5 ns

Notes:

1. Propagation Delays and Enable/Disable times are with Vcc = 3.3V ±0.3V, normal range. For Vcc = 2.7V, extended range, all

Propagation Delays and Enable/Disable times should be degraded by 20%.

2. See test circuit and wave forms.

3. Minimum limits are guaranteed but not tested on Propagation Delays.

4. This parameter is guaranteed but not production tested.

5. Skew between any two outputs, of the same package, switching in the same direction. This parameter is guaranteed by design.

Pericom Semiconductor Corporation

2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com