Texas Instruments CY74FCT163H244CPVC, CY74FCT163H244CPAC, CY74FCT163244CPVCT, CY74FCT163244CPVC, CY74FCT163244CPACT Datasheet

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Texas Instruments CY74FCT163H244CPVC, CY74FCT163H244CPAC, CY74FCT163244CPVCT, CY74FCT163244CPVC, CY74FCT163244CPACT Datasheet

Data sheet acquired from Cypress Semiconductor Corporation.

Data sheet modiﬁed to remove devices not offered.

CY74FCT163244

CY74FCT163H244

SCCS046 - December 1996 - Revised March 2000

Features

•Low power, pin-compatible replacement for LCX and LPT families

•5V tolerant inputs and outputs

•24 mA balanced drive outputs

•Power-off disable outputs permits live insertion

•Edge-rate control circuitry for reduced noise

•FCT-C speed at 4.1 ns

•Latch-up performance exceeds JEDEC standard no. 17

•Typical output skew < 250 ps

•Industrial temperature range of –40˚C to +85˚C

•TSSOP (19.6-mil pitch) or SSOP (25-mil pitch)

•TypicalVolp (ground bounce) performance exceeds Mil Std 883D

•VCC = 2.7V to 3.6V

•ESD (HBM) > 2000V

16-Bit Buffers/Line Drivers

CY74FCT163H244

•Bus hold on data inputs

•Eliminates the need for external pull-up or pull-down resistors

•Devices with bus hold are not recommended for translating rail-to-rail CMOS signals to 3.3V logic levels

Functional Description

These 16-bit buffers/line drivers are designed for use in memory driver, clock driver, or other bus interface applications, where high-speed and low power are required. The three-state controls are designed to allow 4-bit, 8-bit or combined 16-bit operation. Flow-through pinout and small shrink packaging simpliﬁes board layout.

The CY74FCT163244 has 24-mA balanced output drivers with current limiting resistors in the outputs.

The CY74FCT163H244 has “bus hold” on the data inputs, which retains the last state of the input whenever the source driving the input goes to high impedance. This eliminates the need for pull-up/down resistors and prevents ﬂoating inputs.

Logic Block Diagrams CY74FCT163244, CY74FCT163H244

Pin Configuration

SSOP/TSSOP

Top View

1A1

1Y1

3A1

3Y1

1Y1

1A1

1Y2

1A2

1Y2

3A2

3Y2

GND

1Y3

1A3

1Y4

163244

1A4

1A3

3A3

163H244 43

1Y3

3Y3

VCC

2Y1

2A1

1A4

1Y4

3A4

3Y4

2Y2

2A2

GND

2Y3

2A3

2Y4

2A4

3Y1

3A1

3Y2

3A2

GND

2A1

2Y1

4A1

4Y1

3Y3

3A3

3Y4

3A4

2A2

4A2

VCC

2Y2

4Y2

4Y1

4A1

4Y2

4A2

GND

2A3

2Y3

4A3

4Y3

4A3

2A4

4A4

4Y4

4A4

2Y4

4Y4

CY74FCT163244

CY74FCT163H244

Pin Description

Name		Description

		Three-State Output Enable Inputs (Active LOW)
	OE	Three-State Output Enable Inputs (Active LOW)

	A	Data Inputs[1]
	Y	Three-State Outputs

Function Table[2]

	Inputs		Outputs

		A	Y
OE		A	Y

L		L	L

L		H	H

H		X	Z

Maximum Ratings[3,4]

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

Storage Temperature .................................	–55°C to +125°C
Ambient Temperature with	–55°C to +125°C
Power Applied............................................	–55°C to +125°C
Supply Voltage Range .....................................	0.5V to +4.6V
DC Input Voltage ...........................................	–0.5V to +7.0V
DC Output Voltage.........................................	–0.5V to +7.0V
DC Output Current
(Maximum Sink Current/Pin) ........................	–60 to +120 mA
Power Dissipation ..........................................................	1.0W

Operating Range

	Ambient
Range	Temperature	VCC
Industrial	–40°C to +85°C	2.7V to 3.6V

Electrical Characteristics for Non Bus Hold Devices Over the Operating Range VCC=2.7V to 3.6V

	Parameter	Description			Test Conditions			Min.	Typ.[5]	Max.	Unit
VIH		Input HIGH Voltage	All Inputs					2.0		5.5	V
VIL		Input LOW Voltage								0.8	V
VH		Input Hysteresis[6]							100		mV
VIK		Input Clamp Diode Voltage	VCC=Min., IIN=–18 mA						–0.7	– 1.2	V
IIH		Input HIGH Current	VCC=Max., VI=5.5							±1	µA
IIL		Input LOW Current	VCC=Max., VI=GND							±1	µA
IOZH		High Impedance Output Current	VCC=Max., VOUT=5.5V							±1	µA
		(Three-State Output pins)

IOZL		High Impedance Output Current	VCC=Max., VOUT=GND							±1	µA
		(Three-State Output pins)

I	OS	Short Circuit Current[7]	V	CC	=Max., V	=GND		–60	–135	–240	mA
	OS			CC	OUT
IOFF		Power-Off Disable	VCC=0V, VOUT≤4.5V							±100	µA
ICC		Quiescent Power Supply Current	VIN≤0.2V,				VCC=Max.		0.1	10	µA
			VIN>VCC–0.2V
	ICC	Quiescent Power Supply Current	VIN=VCC–0.6V[8]				VCC=Max.		2.0	30	µA
		(TTL inputs HIGH)

Notes:

1.On the CY74FCT163H244, these pins have “bus hold.”

2.H = HIGH Voltage Level. L = LOW Voltage Level. X = Don’t Care. Z = High Impedance.

3.Operation beyond the limits set forth may impair the useful life of the device. Unless otherwise noted, these limits are over the operating free-air temperature range.

4.With the exception of inputs with bus hold, unused inputs must always be connected to an appropriate logic voltage level, preferably either VCC or ground.

5.Typical values are at VCC=3.3V, TA = +25˚C ambient.

6.This parameter is speciﬁed but not tested.

7.Not more than one output should be shorted at a time. Duration of short should not exceed one second. The use of high-speed test apparatus and/or sample and hold techniques are preferable in order to minimize internal chip heating and more accurately reﬂect operational values. Otherwise prolonged shorting of a high output may raise the chip temperature well above normal and thereby cause invalid readings in other parametric tests. In any sequence of parameter tests, IOS tests should be performed last.

8.Per TTL driven input; all other inputs at VCC or GND.

CY74FCT163244

CY74FCT163H244

Electrical Characteristics For Bus Hold Devices Over the Operating Range VCC=2.7V to 3.6V

Parameter

Description

Test Conditions

Min.

Typ.[5]

Max.

Unit

VIH

Input HIGH Voltage

All Inputs

2.0

VCC

VIL

Input LOW Voltage

0.8

Input Hysteresis[6]

100

VIK

Input Clamp Diode Voltage

VCC=Min., IIN=–18 mA

–0.7

–1.2

IIH

Input HIGH Current

VCC=Max., VI=VCC

±100

µA

IIL

Input LOW Current

±100

µA

BBH

Bus Hold Sustain Current on Bus Hold Input[9]

=Min.

=2.0V

–50

µA

IBBL

VI=0.8V

+50

µA

IBHHO

Bus Hold Overdrive Current on Bus Hold In-

VCC=Max., VI=1.5V

±500

µA

IBHLO

put[9]

IOZH

High Impedance Output Current

VCC=Max., VOUT=VCC

±1

µA

(Three-State Output pins)

IOZL

High Impedance Output Current

VCC=Max., VOUT=GND

±1

µA

(Three-State Output pins)

Short Circuit Current[7]

=Max., V

=GND

–60

–135

–240

OUT

IOFF

Power-Off Disable

VCC=0V, VOUT≤4.5V

±100

µA

ICC

Quiescent Power Supply Current

VIN≤0.2V,

VCC=Max.

+40

µA

VIN>VCC–0.2V

ICC

Quiescent Power supply Current

V =V

–0.6V[8]

VCC=Max.

+350

µA

(TTL inputs HIGH)

Electrical Characteristics For Balanced Drive Devices Over the Operating Range VCC=2.7V to 3.6V

Parameter

Description

Test Conditions

Min.

Typ.[5]

Max.

Unit

ODL

Output LOW Dynamic Current[7]

=3.3V, V

180

or VIL, VOUT=1.5V

IODH

Output HIGH Dynamic Current[7]

VCC=3.3V, VIN=VIH

–45

–180

or VIL, VOUT=1.5V

VOH

Output HIGH Voltage

VCC=Min., IOH= –0.1 mA

VCC–0.2

=3.0V, I

= –8 mA

2.4[10]

3.0

VCC=3.0V, IOH= –24 mA

2.0

3.0

VOL

Output LOW Voltage

VCC=Min., IOL= 0.1mA

0.2

VCC=Min., IOL= 24 mA

0.3

0.55

Notes:

9.Pins with bus hold are described in Pin Description.

10. VOH = VCC – 0.6V at rated current.

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