TEXAS INSTRUMENTS CY74FCT163244 Technical data

查询74FCT163H244CPACT供应商

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

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

• Power-off disable outputs permits live insertion

• Edge-rate control circuitry for reduced noise

• FCT-C speed at 4.1 ns

• Latch-up performance exceedsJEDEC 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)

• Typical
Std 883D

•V

V

olp

= 2.7V to 3.6V

CC

(groundbounce)performanceexceedsMil

• ESD (HBM) > 2000V

Functional Description

These 16-bit buffers/line drivers are designed for use in
memory driver,clockdriver,or other businterface applications,
wherehigh-speed and low powerare required. Thethree-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

OE

1

1A1

1A2

1A3

1A4

2

OE

2A1

2A2

2A3

2A4

1Y1

1Y2

1Y3

1Y4

2Y1

2Y2

2Y3

2Y4

OE

3

3A1

3A2

3A3

3A4

OE

4

4A1

4A2

4A3

4A4

16-Bit Buffers/Line Drivers

Pin

Configuration

SSOP/TSSOP

Top View

3Y1

3Y2

3Y3

3Y4

4Y1

4Y2

4Y3

4Y4

OE

1

1Y1
1Y2

GND

1Y3
1Y4

V

2Y1
2Y2

GND

2Y3
2Y4
3Y1
3Y2

GND

3Y3
3Y4

V

4Y1
4Y2

GND

4Y3
4Y4

OE

4

1
2
3
4
5
6

CC

7
8
9
10
11
12

13
14

15
16
17
18

CC

19
20
21
22
23
24

163244
163H244

48

OE

2

47

1A1

46

1A2

GND

45
44

1A3

43

1A4

V

CC

42

2A1

41

2A2

40

GND

39

2A3

38
37

2A4

36

3A1

35

3A2

34

GND

33

3A3

32

3A4

31

V

CC

30

4A1

29

4A2

GND

28
27

4A3

26

4A4

OE

3

25

Copyright © 2000, Texas Instruments Incorporated

CY74FCT163244

CY74FCT163H244

Pin Description

Name Description

OE Three-State Output Enable Inputs (Active LOW)

A Data Inputs
Y Three-State Outputs

Function Table

Inputs Outputs

OE A Y

L L L
L H H

[1]

[2]

Maximum Ratings

(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

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

[3,4]

H X Z

Operating Range

Range

Industrial –40°C to +85°C 2.7V to 3.6V

Electrical Characteristics for Non Bus Hold Devices Over the Operating Range V

Parameter Description Test Conditions Min. Typ.

V

IH

V

IL

V

H

V

IK

I

IH

I

IL

I

OZH

I

OZL

I

OS

I

OFF

I

CC

∆I

CC

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 V

5. Typical values are at V

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 internalchip 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, I

8. Per TTL driven input; all other inputs at V

Input HIGH Voltage All Inputs 2.0 5.5 V
Input LOW Voltage 0.8 V
Input Hysteresis

[6]

Input Clamp Diode Voltage VCC=Min., IIN=–18 mA –0.7 – 1.2 V
Input HIGH Current VCC=Max., VI=5.5 ±1 µA

Input LOW Current VCC=Max., VI=GND ±1 µA
High Impedance Output Current

(Three-State Output pins)
High Impedance Output Current

(Three-State Output pins)
Short Circuit Current

[7]

Power-Off Disable VCC=0V, V
Quiescent Power Supply Current VIN≤0.2V,

Quiescent Power Supply Current

VCC=Max., V

VCC=Max., V

VCC=Max., V

OUT

V

IN>VCC

–0.2V

VIN=VCC–0.6V

=5.5V ±1 µA

OUT

=GND ±1 µA

OUT

=GND –60 –135 –240 mA

OUT

≤4.5V ±100 µA

VCC=Max. 0.1 10 µA

[8]

VCC=Max. 2.0 30 µA

(TTL inputs HIGH)

=3.3V, TA = +25˚C ambient.

CC

tests should be performed last.

OS

or GND.

CC

Ambient

Temperature V

=2.7V to 3.6V

CC

[5]

Max. Unit

100 mV

or ground.

CC

CC

2

CY74FCT163244

CY74FCT163H244

Electrical Characteristics For Bus Hold Devices Over the Operating Range V

=2.7V to 3.6V

CC

Parameter Description Test Conditions Min. Typ.

V

IH

V

IL

V

H

V

IK

I

IH

I

IL

I

BBH

I

BBL

I

BHHO

I

BHLO

I

OZH

I

OZL

I

OS

I

OFF

I

CC

∆

ICC

Input HIGH Voltage All Inputs 2.0 V
Input LOW Voltage 0.8 V
Input Hysteresis

[6]

Input Clamp Diode Voltage VCC=Min., IIN=–18 mA –0.7 –1.2 V
Input HIGH Current VCC=Max., VI=V

CC

Input LOW Current ±100 µA
Bus Hold Sustain Current on Bus Hold Input

[9]

VCC=Min. VI=2.0V –50 µA

VI=0.8V +50 µA

Bus Hold Overdrive Current on Bus Hold In-

[9]

put
High Impedance Output Current

(Three-State Output pins)
High Impedance Output Current

(Three-State Output pins)
Short Circuit Current

[7]

Power-Off Disable VCC=0V, V
Quiescent Power Supply Current VIN≤0.2V,

Quiescent Power supply Current
(TTL inputs HIGH)

VCC=Max., VI=1.5V ±500 µA

VCC=Max., V

VCC=Max., V

VCC=Max., V

V

IN>VCC

VIN=VCC–0.6V

OUT=VCC

=GND ±1 µA

OUT

=GND –60 –135 –240 mA

OUT

≤4.5V ±100 µA

OUT

VCC=Max.

–0.2V

[8]

VCC=Max.

[5]

Max. Unit

CC

V

100 mV

±100 µA

±1 µA

+40 µA

+350 µA

Electrical Characteristics For Balanced Drive Devices Over the Operating Range V

CC

Parameter Description Test Conditions Min. Typ.

I

ODL

I

ODH

V

OH

Output LOW Dynamic Current

Output HIGH Dynamic Current

Output HIGH Voltage VCC=Min., IOH= –0.1 mA VCC–0.2 V

[7]

[7]

VCC=3.3V, VIN=V
or VIL, V

OUT

VCC=3.3V, VIN=V
or VIL, V

OUT

=1.5V

=1.5V

IH

IH

–45 –180 mA

VCC=3.0V, IOH= –8 mA 2.4

45 180 mA

[10]

VCC=3.0V, IOH= –24 mA 2.0 3.0 V

V

OL

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

VCC=Min., IOL= 24 mA 0.3 0.55

Notes:

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

10. V

= VCC – 0.6V at rated current.

OH

=2.7V to 3.6V

[5]

Max. Unit

3.0 V

3