Texas Instruments CY74FCT16823CTPVC, CY74FCT16823CTPACT, CY74FCT16823CTPAC, CY74FCT16823ATPACT, CY74FCT16823ATPAC Datasheet

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

CY74FCT16823T

CY74FCT162823T

SCCS062 - August 1994 - Revised March 2000

Features

•FCT-E speed at 4.4 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%

CY74FCT16823T Features:
• 64 mA sink current, 32 mA source current
• Typical V	(ground bounce) <1.0V at V	CC	= 5V,
OLP

TA = 25˚C

18-Bit Registers

CY74FCT162823T Features:

•Balanced 24 mA output drivers

•Reduced system switching noise

• Typical V	(ground bounce) <0.6V at V	CC	= 5V,
OLP
TA= 25˚C

Functional Description

The CY74FCT16823T and the CY74FCT162823T 18-bit bus interface registers are designed for use in high-speed, low-power systems needing wide registers and parity. 18-bit operation is achieved by connecting the control lines of the two 9-bit registers. Flow-through pinout and small shrink packaging aids in simplifying board layout. The outputs are designed with a power-off disable feature to allow live insertion of boards.

The CY74FCT16823T is ideally suited for driving high-capacitance loads and low-impedance backplanes.

The CY74FCT162823T 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 CY74FCT162823T is ideal for driving transmission lines.

Logic Block Diagrams				Pin Configuration
				SSOP/TSSOP
1OE
				Top View

	1CLR
	1CLK
	1CLKEN
	R
	C	1Q1
	D
	1D1
	TO 8 OTHER CHANNELS	FCT16823-1
	2OE
	2CLR
	2CLK
	2CLKEN
	R
	C	2Q1
	D
	2D2

	1								1				56		1CLK
			CLR
													55
			1		OE				2						1	CLKEN
			1Q1						3				54		1D1
	GND								4				53		GND
			1Q2						5				52		1D2
			1Q3						6				51		1D3
			VCC						7				50		VCC
			1Q4						8				49		1D4
			1Q5						9				48		1D5
			1Q6						10				47		1D6
	GND								11				46		GND
			1Q7						12				45		1D7
			1Q8									13	44		1D8
			1Q9									14	43			1D9
			2Q1									15	42			2D1
																2D2
			2Q2									16	41
			2Q3									17	40			2D3
	GND											18	39		GND
			2Q4									19	38			2D4
			2Q5									20	37			2D5
			2Q6									21	36			2D6
													35
		VCC										22				VCC
			2Q7									23	34		2D7
													33
			2Q8									24			2D8
													32
	GND										25				GND
			2Q9								26		31			2D9
	2										27		30
				OE												2	CLKEN
	2												29			2CLK
		CLR									28

FCT16823-2	FCT16823-3

TO 8 OTHER CHANNELS

Copyright © 2000, Texas Instruments Incorporated

CY74FCT16823T

CY74FCT162823T

Pin Description

	Name				Description
	D				Data Inputs
	CLK				Clock Inputs
					Clock Enable Inputs (Active LOW)
	CLKEN
					Asynchronous Clear Inputs (Active LOW)
	CLR
					Output Enable Inputs (Active LOW)
	OE
	Q				Three-State Outputs

Function Table[1]

Inputs

Outputs

CLK

D

Q

Function

OE

CLR

CLKEN

H

X

X

X

X

Z

High Z

L

L

X

X

X

L

Clear

L

H

H

X

X

Q[2]

Hold

H

H

L

L

Z

Load

H

H

L

H

Z

L

H

L

L

L

L

H

L

H

H

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 ..................................................
DC Input Voltage .................................................	−0.5V to +7.0V
DC Output Voltage ..............................................	−0.5V to +7.0V
DC Output Current	−60 to +120 mA
(Maximum Sink Current/Pin) ...........................

Notes:

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

Z = HIGH Impedance.

=LOW-to-HIGH transition.

Power Dissipation ..........................................................	1.0W
Static Discharge Voltage............................................	>2001V
(per MIL-STD-883, Method 3015)

Operating Range

	Ambient
Range	Temperature	VCC
Industrial	−40°C to +85°C	5V ± 10%

2.Output level before indicated steady-state input conditions were established.

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

2

CY74FCT16823T

CY74FCT162823T

Electrical Characteristics Over the Operating Range

Parameter		Description			Test Conditions		Min.	Typ.[5]	Max.	Unit
VIH		Input HIGH Voltage					2.0			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=VCC						±1	µA
IIL		Input LOW Current	VCC=Max., VI=GND						±1	µA
IOZH		High Impedance Output Current	VCC=Max., VOUT=2.7V						±1	µA
		(Three-State Output pins)
IOZL		High Impedance Output Current	VCC=Max., VOUT=0.5V						±1	µA
		(Three-State Output pins)
I	OS	Short Circuit Current[7]	V	CC	=Max., V	=GND	−80	−140	−200	mA
					OUT
I	O	Output Drive Current[7]	V	CC	=Max., V	=2.5V	−50		−180	mA
					OUT
I	OFF	Power-Off Disable	V	CC	=0V, V	≤4.5V[8]			1	µA
					OUT

Output Drive Characteristics for CY74FCT16823T

Parameter	Description	Test Conditions	Min.	Typ.[5]	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
		VCC=Min., IOH=−32 mA	2.0	3.0
VOL	Output LOW Voltage	VCC=Min., IOL=64 mA		0.2	0.55	V

Output Drive Characteristics for CY74FCT162823T

Parameter

Description

Test Conditions

Min.

Typ.[5]

Max.

Unit

IODL

Output LOW Voltage[7]

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

60

115

150

mA

I

ODH

Output HIGH Voltage[7]

V =5V, V

=V

IH

or V

, V =1.5V

−60

−115

−150

mA

CC

IN

IL 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[9] (T = +25˚C, f = 1.0 MHz)

A

Parameter

Description

Test Conditions

Typ.[5]

Max.

Unit

CIN

Input Capacitance

VIN = 0V

4.5

6.0

pF

COUT

Output Capacitance

VOUT = 0V

5.5

8.0

pF

Notes:

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

6.This input 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.Tested at +25˚C.

9.This parameter is specified but not tested.

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