Texas Instruments CY74FCT16240ETPVCT, CY74FCT16240ETPVC, CY74FCT16240ATPVCT, CY74FCT162240ETPVC, CY74FCT162240ETPAC Datasheet

Data sheet acquired from Cypress Semiconductor Corporation. Data sheet modified to remove devices not offered.

CY74FCT16240T

CY74FCT162240T

SCCS027 - August 1994 - Revised March 2000

Features

•FCT-E speed at 3.2 ns

•Power-off disable outputs permits live insertion

•Edge-rate control circuitry for significantly improved noise characteristics

•Typical output skew < 250 ps

•ESD > 2000V

•TSSOP (19.6-mil pitch) and SSOP (25-mil pitch) packages

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

•VCC = 5V ± 10%

CY74FCT16240T Features:

• 64 mA sink current, 32 mA source current

• Typical V (ground bounce)

OLP

<1.0V at VCC = 5V, TA = 25˚C

16-Bit Buffers/Line Drivers

CY74FCT162240T Features:

• Balanced output drivers: 24 mA

• Reduced system switching noise

• Typical V (ground bounce)

OLP

<0.6V at VCC = 5V, TA= 25˚C

Functional Description

These 16-bit buffer/line drivers are used in memory driver, clock driver, or other bus interface applications, where high speed and low power are required. With flow-through pinout and small shrink packaging, board layout is simplified. The three-state controls are designed to allow 4-, 8-, or 16-bit operation. The outputs are designed with a power-off disable feature to allow for live insertion of boards.

The CY74FCT16240T is ideally suited for driving high-capacitance loads and low-impedance backplanes.

The CY74FCT162240T has 24-mA balanced output drivers with current limiting resistors in the outputs. This reduces the need for external terminating resistors and provides for minimal undershoot and reduced ground bounce. The CY74FCT162240T is ideal for driving transmission lines.

Logic Block Diagrams																												Pin Configuration
																																						SSOP/TSSOP
																																						Top View
1																	3OE
	OE
																												1									1		48		2
																													OE														OE
																												1					1								1A1
	1A1																	3A1														Y					2		47
											1Y1													3Y1
																												1Y2									3		46		1A2
	1A2																3A2						3				2	GND									4		45		GND
											1	Y		2											Y			1				Y	3				5		44		1A3
																												1					4						43		1A4
																																Y					6
	1A3										1	Y		3			3A3						3		Y		3	VCC									7		42		VCC
																												2Y1									8		41		2A1
																												2					2								2A2
	1A4																3A4						3				4					Y					9		40
												Y													Y			GND									10		39		GND
										1 4
																												2						3							2A3
										FCT16240–1												FCT16240–3									Y						11		38
																												2			Y			4			12		37		2A4
																												3					1					13	36		3A1
																																Y
																	4																						35
2		OE																OE										3				Y	2					14			3A2
																																						15	34
																												GND													GND
																												3					3					16	33		3A3
		A																4A1						4Y1								Y
2 1											2Y1																	3					4					17	32		3A4
																																Y
																																						18	31
	2A2																	4A2						4			2	VCC													VCC
											2		Y		2											Y		4				Y	1					19	30		4A1
																												4					2					20	29		4A2
	2A3																	4A3														Y
																												GND										21	28		GND
											2Y3															Y
																				4 3								4					3								4A3
																																Y						22	27
																												4					4					23	26		4A4
	2A4																	4A4														Y
											2		Y			4								4Y4
										FCT16240–2												FCT16240–4						4OE										24	25		3OE

FCT16240–5

Copyright © 2000, Texas Instruments Incorporated

CY74FCT16240T

CY74FCT162240T

Pin Summary

		Name			Description
					Three-State Output Enable Inputs (Active LOW)
		OE
	A				Data Inputs
					Three-State Outputs
	Y

Function Table[1]

		Inputs		Outputs
			A
	OE				Y
	L		L	H
	L		H		L
	H		X		Z

Electrical Characteristics Over the Operating Range

Maximum Ratings[2, 3]

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

Storage Temperature ......................			Com’l . –55°C to +125°C
Ambient Temperature with			Com’l . –55°C to +125°C
Power Applied..................................
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
Static Discharge Voltage
(per MIL-STD-883, .............................Method 3015)				>2001V
Operating Range
Range		Ambient Temperature		VCC
Industrial		–40 ° C to +85 ° C		5V ± 10%

Parameter		Description			Test Conditions			Min.	Typ.[4]	Max.	Unit
VIH		Input HIGH Voltage						2.0			V
VIL		Input LOW Voltage								0.8	V
VH		Input Hysteresis[5]							100		mV
VIK		Input Clamp Diode Voltage	VCC = Min., IIN= –18 mA						–0.7	–1.2	V
IIH		Input HIGH Current	VCC = Max., VI = VCC							±1	A
IIH		Input HIGH Current	VCC = Max., VI = VCC							±1	A
IIL		Input LOW Current	VCC = Max., VI = GND							±1	A
IIL		Input LOW Current	VCC = Max., VI = GND							±1	A
IOZH		High Impedance Output Current	VCC = Max., VOUT = 2.7V							±1	A
		(Three-State Output pins)
IOZL		High Impedance Output Current	VCC = Max., VOUT = 0.5V							±1	A
		(Three-State Output pins)
I	OS	Short Circuit Current[6]	V	CC	= Max., V		= GND	–80	–140	–200	mA
					OUT
I	O	Output Drive Current[6]	V	CC	= Max., V		= 2.5V	–50		–180	mA
					OUT
I	OFF	Power-Off Disable	V	CC	= 0V, V	≤ 4.5V[7]				±1	A
					OUT

Output Drive Characteristics for CY74FCT16240T

Parameter	Description	Test Conditions	Min.	Typ.[4]	Max.	Unit
VOH	Output HIGH Voltage	VCC = Min., IOH= –3 mA	2.5	3.5		V
		VCC = Min., IOH= –15 mA	2.4	3.5		V
		VCC = Min., IOH= –32 mA	2.0	3.0		V
VOL	Output LOW Voltage	VCC = Min., IOL= 64 mA		0.2	0.55	V
Notes:

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

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

3.Unused inputs must always be connected to an appropriate logic voltage level, preferably either VCC or ground.

4.Typical values are at VCC=5.0V, TA= +25˚C ambient.

5.This parameter is specified but not tested.

6.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.

7.Tested at +25˚C.

2

CY74FCT16240T

CY74FCT162240T

Output Drive Characteristics for CY74FCT162240T

Parameter

Description

Test Conditions

Min.

Typ.[4]

Max.

Unit

IODL

Output LOW Current[6]

VCC = 5V, VIN = VIH or VIL,VOUT = 1.5V

60

115

150

mA

I

ODH

Output HIGH Current[6]

V

CC

= 5V, V

IN

= V

IH

or V

IL

, V

= 1.5V

–60

–115

–150

mA

OUT

VOH

Output HIGH Voltage

VCC = Min., IOH = –24 mA

2.4

3.3

V

VOL

Output LOW Voltage

VCC = Min., IOL = 24 mA

0.3

0.55

V

Capacitance[5] (T = +25˚C, f = 1.0 MHz)

A

Parameter

Description

Test Conditions

Typ.[4]

Max.

Unit

CIN

Input Capacitance

VIN = 0V

4.5

6.0

pF

COUT

Output Capacitance

VOUT = 0V

5.5

8.0

pF

Power Supply Characteristics

Parameter

Description

Test Conditions

Typ.[4]

Max.

Unit

ICC

Quiescent Power Supply Current

VCC=Max.

VIN≤0.2V,

5

500

µA

VIN≥VCC–0.2V

ICC

Quiescent Power Supply Current

VCC=Max.

VIN=3.4V[8]

0.5

1.5

mA

(TTL inputs HIGH)

ICCD

Dynamic Power Supply

VCC=Max., One Input Tog-

VIN=VCC or

60

100

µA/MHz

Current[9]

gling, 50% Duty Cycle, Out-

VIN=GND

puts Open, OE=GND

I

C

Total Power Supply Current[10]

V

CC

=Max., f =10 MHz, 50%

V

IN

=V

CC

or

0.6

1.5

mA

1

Duty Cycle, Outputs Open,

VIN=GND

One Bit Toggling, OE=GND

VIN=3.4V or

0.9

2.3

mA

VIN=GND

V

CC

=Max., f =2.5 MHz, 50%

V

IN

=V

CC

or

2.4

4.5[11]

mA

1

Duty Cycle, Outputs Open,

VIN=GND

Sixteen Bits Toggling,

VIN=3.4V or

6.4

16.5[11]

mA

OE=GND

VIN=GND

Notes:

8.Per TTL driven input (VIN=3.4V); all other inputs at VCC or GND.

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

10. IC	=	IQUIESCENT + IINPUTS + IDYNAMIC
IC	=	ICC+ ICCDHNT+ICCD(f0/2 + f1N1)
ICC	=	Quiescent Current with CMOS input levels
ICC =		Power Supply Current for a TTL HIGH input (VIN=3.4V)
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)
f0	=	Clock frequency for registered devices, otherwise zero
f1	=	Input signal frequency
N1	=	Number of inputs changing at f1

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

11. Values for these conditions are examples of the ICC formula. These limits are specified but not tested.

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