CY74FCT162H244ATPAC - Cypress Semiconductor

16 Bit Buffers/Line Drivers

ax id: 7008

CY74FCT16244T/2244T

CY74FCT16444T/2H244T

Cypress Semiconductor Corporation • 3901 North First Street • San Jose • CA 95134 • 408-943-2600

Jul

1994 – Revised October 30

1997

44T/2

Features

• Low pow er, pin- com pati ble replacement for ABT

functions

• FCT-E speed at 3.2 ns

• Power-off disable outputs permits live inser tion

• Edge-rate control cir cuitry for signif icantl y im proved

noise characteristics

• Typical output sk ew < 250 ps

• ESD > 2000V

• TSSOP (19.6 -mil pit ch) and SSOP (25-mil pitch)

packages

• Industrial tem perature range of –40°C to +85°C

•VCC = 5V ± 10%

CY74FCT16244T Features:

• 64 mA sink current, 32 mA source current

• Typical VOLP (gr ound bounce)

<1.0V at VCC = 5V, TA = 25°C

CY74FCT162244T Featur es:

• Balanced output drivers: 24 mA

• Red uced system swit ching noise

• Typical VOLP (gr ound bounce)

<0.6V at VCC = 5V, TA= 25°C

CY74FCT16444T Features:

• 64 mA sink current, 32 mA source current

• Red uced system loading

CY74FCT162H244T Fea tures:

• B us hold on dat a input s

• E li minates th e need for external pull -up or pull-down

resistors

Functional Descripti on

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. With

flow-through pinout and small shrink packaging board layout

is simplified. The three-state controls are designed to allow

4-bit, 8-bit or combined 16-bit operation. The outputs are de-

signed with a power-off disable feature to allow for live

insertion of boards.

The CY74FCT16244T is ideally suited for driving

high-capacitance loads and low-impedance backplanes.

The CY74FCT162244T has 24-mA balanced output drivers

with current limiting resistors in the outputs. This reduces the

need for external terminating resistors and provides for mini-

mal undershoot and reduced ground bounce. The

CY74FCT162244T is ideal for driving transmission lines.

The CY74FCT16444 is designed for 16-bit operation, reducing

control lines from four OE to one OE to reduce input loading.

The CY74FCT162H24 4T is a 24-mA balance d output part that

has “bus hold” on the data inputs. The device retains the in-

put’s last state whenever the input goes to high impedance.

This eliminates the need for pull-up/down resistors and pre-

vents float ing inputs .

GND

kDi

agrams

FCT

16244

FCT

162244

CY74FCT162H244T

gurat

1OE

SSOP/TSSOP

Top View

1Y1

1Y2

1Y3

1Y4

1A1

1A2

1A3

1A4

1OE

2Y1

2Y2

2Y3

2Y4

2A1

2A2

2A3

2A4

2OE

1Y1

1Y2

1Y3

1Y4

1A1

1A2

1A3

1A4

2OE

GND

VCC

2Y3

2Y4

2Y1

2Y2

2A1

2A2

2A3

2A4

VCC

GND

3Y3

3Y4

3Y1

3Y2

3A1

3A2

3A3

3A4

GND

VCC

4Y3

4Y4

4Y1

4Y2

4A1

4A2

4A3

4A4

VCC

GND

4OE 3OE

3Y1

3Y2

3Y3

3Y4

3A1

3A2

3A3

3A4

3OE

4Y1

4Y2

4Y3

4Y4

4A1

4A2

4A3

4A4

4OE

FCT16244–1 FCT16244–2

FCT16244–3 FCT16244–4 FCT16244–5

16244T

162244T

162H244T

CY74FCT16244T/2244T

CY74FCT16444T/2H244

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

Power Applied............................................. –55°C to +125°C

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

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

DC Output Current

(Maximum Sink Current /Pi n)....... ....... ....... ...–60 to +120 mA

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

Static Discharge Voltage ...........................................>2001V

(per MIL- STD-883, Method 3015)

Notes:

1. On CY74FCT162H244T these pins have “bus hold.”

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

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, preferab ly either VCC or ground.

GND

Logic Block Diagram CY74FCT16444T Pin Configuration

SSOP/TSSOP

Top Vie w

1OE Y1

GND

VCC

GND

Y11

Y12

Y10

A10

A11

A12

GND

VCC

Y15

Y16

Y13

Y14

A13

A14

A15

A16

VCC

GND

NC NC

FCT16244–6

FCT16244–7

TO 12 OTHERCHANNELS

16444T

Pin Description

Name Description

OE Three-State Output Enable Inputs (Active LOW)

AData Inputs[1]

YThree-State Outputs

Function Table[2]

Inputs Outputs

OE A Y

L L L

L H H

H X Z Ordering Range

Range Ambient

Temperature VCC

Industrial – 40°C to +85°C 5V ± 10%

CY74FCT16244T/2244T

CY74FCT16444T/2H244

Electrical Characteristics O ver 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

VHInput Hysteresis[6] 100 mV

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

IIH Input HIGH Current Standard VCC=Max., VI=VCC ±1µA

Bus Hold ±100

IIL Input LOW Current Standard VCC=Max., VI=GND ±1µA

Bus Hold ±100 µA

IBBH

IBBL Bu s Ho ld Sus tai n Current on Bus Hold Input[7] VCC=Min. VI=2.0V –50 µA

VI=0.8V +50

IBHHO

IBHLO Bus Hold Overdrive Current on Bus Hold Input[7] VCC=Max., VI=1.5V TBD mA

IOZH High Imp edance Output Cu rrent

(Three-Stat e O utput pins) VCC=Max., VOUT=2.7V ±1µA

IOZL High Imp edance Output Cu rrent

(Three-Stat e O utput pins) VCC=Max., VOUT=0.5V ±1µA

IOS Sh ort Circuit Current[8] VCC=Max., VOUT=GND –80 –140 –200 mA

IOOutput Drive Current[8] VCC=Max., VOUT=2.5V –50 –180 mA

IOFF Power-Off Disable VCC=0V, VOUT≤4.5V[9] ±1µA

Output D rive Characteristics for CY74FCT16244T, CY74FCT16444T

Parameter Description Test Conditions Min. Typ.[5] Max. Unit

VOH Output HIGH Voltage VCC=Mi n ., IOH=–3 mA 2.5 3.5 V

VCC=Mi n ., IOH=–15 mA 2.4 3.5 V

VCC=Mi n ., IOH=–32 mA 2.0 3.0 V

VOL Output LOW Voltage VCC=Mi n ., IOL=64 mA 0.2 0.55 V

Output D rive Characteristics for CY74FCT162244T, CY74FCT162H244T

Parameter Description Test Conditions Min. Typ.[5] Max. Unit

IODL Output LOW Current[8] VCC=5V, VIN=VIH or VIL, VOUT=1.5V 60 115 150 mA

IODH Output HIGH Current[8] VCC=5V, VIN=VIH or VIL, VOUT=1.5V –60 –115 –150 mA

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

Notes:

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

6. This parameter is guaranteed but not tested.

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

8. 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 abo ve normal and thereby cause invalid readings in other parametric tests. In any sequence of parameter

tests, IOS tests should be performed last.

9. Tested at +25°C.

CY74FCT16244T/2244T

CY74FCT16444T/2H244

Capacitance[6](TA = +25°C, f = 1.0 MHz)

Parameter Description Test Conditions Typ.[5] Max. Unit

CIN Input Capacitanc e VIN = 0V 4.5 6.0 pF

COUT Output Capacitance VOUT = 0V 5.5 8.0 pF

Pow er Supply Characteri stic s

Parameter Description Test Conditi ons Typ.[5] Max. Unit

ICC Quiescent Power Supply Current VCC=Max. VIN≤0.2V,

VIN≤VCC-0.2V 5500 µA

∆ICC Quiescent P ower Supply Current

(TTL inputs HIGH) VCC=Max. VIN=3.4V[10] 0.5 1.5 mA

ICCD Dyna mic Power Supply

Current[11] VCC=Max., One Input T oggling,

50% Duty Cycle, Outputs

Open, OE=GND

VIN=VCC or

VIN=GND 60 100 µA/MHz

ICTotal Power Supply Current[12] VCC=Max., f1=10 MHz,

50% Duty Cycle, Outputs

Open, O n e Bit Togglin g,

OE=GND

VIN=VCC or

VIN=GND 0.6 1.5 mA

VIN=3 .4V o r

VIN=GND 0.9 2.3 mA

VCC=Max., f1=2.5 MHz, 50%

Duty Cycle, Outputs Open, Six-

teen Bits Toggling,

OE=GND

VIN=VCC or

VIN=GND 2.4 4.5[13] mA

VIN=3 .4V o r

VIN=GND 6.4 16.5[13] mA

Notes:

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

11. This parameter is not directly testable, b ut is derived for use in Total Power Supply calculations.

12. IC=IQUIESCENT + IINPUTS + IDYNAMI C

IC=I

CC+∆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.

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

CY74FCT16244T/2244T

CY74FCT16444T/2H244

Swi tch i ng C h ara cteri sti cs Ov er the Operating Range[14]

Parameter Description

CY74FCT16244T

CY74FCT162244T

CY74FCT16444T

CY74FCT162H244T

CY74FCT16244AT

CY74FCT162244AT

CY74FCT16444AT

CY74FCT162H244AT

Min. Max. Min. Max. Unit Fi g. N o.[15]

tPLH

tPHL Propagation Delay Data to Output 1.5 6.5 1.5 4.8 ns 1, 3

tPZH

tPZL Output Enable Time 1.5 8.0 1.5 6.2 ns 1, 7, 8

tPHZ

tPLZ Output Disable Time 1.5 7.0 1.5 5.6 ns 1, 7, 8

tSK(O) Output Ske w[16] 0.5 0.5 ns —

Swi tch i ng C h ara cteri sti cs Ov er the Operating Range[14] (continued)

Parameter Description

CY74FCT16244CT

CY74FCT162244CT

CY74FCT16444CT

CY74FCT162H244CT

CY74FCT16244ET

CY74FCT162244ET

CY74FCT162H244ET

Min. Max. Min. Max. Unit Fig. No.[15]

tPLH

tPHL Propagation Delay Data to Output 1.5 4.1 1.5 3.2 ns 1, 3

tPZH

tPZL Output Enable Time 1.5 5.8 1. 5 4.4 ns 1, 7, 8

tPHZ

tPLZ Output Disable Time 1.5 5.2 1.5 3.6 ns 1, 7, 8

tSK(O) Output Skew[16] 0.5 0.5 ns —

Notes:

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

15. See “Parameter Measurement Information” in the General Information section.

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

CY74FCT16244T/2244T

CY74FCT16444T/2H244

Document #: 38-00396-C

Ordering Information CY74FCT16244

Speed

(ns) Ordering Code Package

Name Package T ype Operating

Range

3.2 CY74FCT16244ETPAC Z48 48-Lead (240-Mil) TSSOP Industrial

CY74FCT16244ETPVC O48 48-Lead (300-Mil) SSOP

4.1 CY74FCT16244CTPAC Z48 48-Lead (240-Mil) TSSOP Industrial

CY74FCT16244CTPVC O48 48-Lead (300-Mil) SSOP

4.8 CY74FCT16244ATPA C Z48 48-Lead (240-Mil) TSSOP Industrial

CY74FCT16244ATPVC O48 48-Lead (300-Mi l) SSOP

6.5 CY74FCT16244TPAC Z48 48-Lead (240-Mil) TSSOP Industrial

CY74FCT16244TPVC O48 48-Lead (300-Mil) SSOP

Ordering Information CY74FCT162244

Speed

(ns) Ordering Code Package

Name Package T ype Operating

Range

3.2 CY74FCT162244ETPAC Z48 48-Lead (240-Mil) TSSOP Industrial

CY74FCT162244ETPVC O48 48-Lead (300-Mil) SSOP

4.1 CY74FCT162244CTPAC Z48 48-Lead (240-Mi l) TSSOP Industrial

CY74FCT162244CTPVC O48 48-Lead (300-Mil) SSOP

4.8 CY74FCT162244ATPAC Z48 48-Lead (240-Mil) TSSOP Industrial

CY74FCT162244ATPVC O48 48-Lead (300-Mi l) SSOP

6.5 CY74FCT162244TPAC Z48 48-Lead (240-Mil) TSSOP Industrial

CY74FCT162244TPVC O48 48-Lead (300-Mil) SSOP

Ordering Information CY74FCT16444

Speed

(ns) Ordering Code Package

Name Package T ype Operating

Range

4.1 CY74FCT16444CTPAC Z48 48-L ead (240-Mil ) TSSOP Industrial

CY74FCT16444CTPVC O48 48-Lead (300-Mil) SSOP

4.8 CY74FCT16444ATPA C Z48 48-Lead (240-Mil) TSSOP Industrial

CY74FCT16444ATPVC O48 48-Lead (300-Mi l) SSOP

6.5 CY74FCT16444TPAC Z48 48-Lead (240-Mil) TSSOP Industrial

CY74FCT16444TPVC O48 48-Lead (300-Mil) SSOP

Ordering Information CY74FCT162H244

Speed

(ns) Ordering Code Package

Name Package T ype Operating

Range

3.2 CY74FCT162H244ETPAC Z48 48-Lead (240-Mil) TSSOP Industrial

CY74FCT162H244ETPVC O48 48-Lead (300-Mil) SSOP

4.1 CY74FCT162H244CTPAC Z48 48-Lead (240-Mi l) TSSOP Industrial

CY74FCT162H244CTPVC O48 48-Lead (300-Mil) SSOP

4.8 CY74FCT162H244ATPA C Z48 48-Lead (240-Mil) TSSOP Industrial

CY74FCT162H244ATPVC O48 48-Lead (300-Mi l) SSOP

6.5 CY74FCT162H244TPAC Z48 48-Lead (240-Mi l) TSSOP Industrial

CY74FCT162H244TPVC O48 48-Lead (300-Mil) SSOP

CY74FCT16244T/2244T

CY74FCT16444T/2H244

of any circui try other than circuitry embodied in a Cypress Semiconduc tor product. Nor does it conv ey or im ply any l icense under patent or oth er rights. Cypress Semiconductor does not authorize

its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress

Semiconductor products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress Semiconductor against all charges.

Package Di ag ra ms

48-Lead Shr unk Small Outlin e PackageO48

48-Lead ThinShrunk SmallOutline Package Z48