etcTI

CY74FCT162827T Datasheet Preview

CY74FCT162827T Datasheet

20-Bit Buffers/Line Drivers

No Preview Available !

1CY74FCT162827T

Data sheet acquired from Cypress Semiconductor Corporation.

Data sheet modiﬁed to remove devices not offered.

CY74FCT16827T

CY74FCT162827T

SCCS064B - August 1994 - Revised September 2001

20-Bit Buffers/Line Drivers

Features

• Ioff Supports Partial-Power-Down Mode Operation

• 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%

CY74FCT16827T Features:

• 64 mA sink current, 32 mA source current

• Typical VOLP (ground bounce) <1.0V at VCC = 5V,

TA = 25˚C

CY74FCT162827T Features:

• Balanced 24 mA output drivers

• Reduced system switching noise

• Typical VOLP (ground bounce) <0.6V at VCC = 5V,

TA = 25˚C

Functional Description

The CY74FCT16827T 20-bit buffer/line driver and the

CY74FCT162827T 20-bit buffer/line driver provide

high-performance bus interface buffering for wide data/address

paths or buses carrying parity. These parts can be used as a single

20-bit buffer or two 10-bit buffers. Each 10-bit buffer has a pair of

NANDed OE for increased flexibility.

This device is fully speciﬁed for partial-power-down

applications using Ioff. The Ioff circuitry disables the outputs,

preventing damaging current backﬂow through the device

when it is powered down.

The CY74FCT16827T is ideally suited for driving

high-capacitance loads and low-impedance backplanes.

The CY74FCT162827T 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

CY74FCT162827T is ideal for driving transmission lines.

Logic Block Diagrams

1OE1

1OE2

1A1

1Y1

2OE1

2OE2

TO 9 OTHER CHANNELS

FCT16827-1

2A1 2Y1

TO 9 OTHER CHANNELS

FCT16827-2

Pin Configuration

SSOP/TSSOP

Top View

1OE1

1Y1

1Y2

GND

1Y3

1Y4

VCC

1Y5

1Y6

1Y7

GND

1Y8

1Y9

1Y10

2Y1

2Y2

2Y3

GND

2Y4

2Y5

2Y6

VCC

2Y7

2Y8

GND

2Y9

2Y10

2OE1

56 1OE2

55 1A1

54 1A2

53 GND

52 1A3

51 1A4

50 VCC

49 1A5

48 1A6

47 1A7

46 GND

45 1A8

44 1A9

43 1A10

42 2A1

41 2A2

40 2A3

39 GND

38 2A4

37 2A5

36 2A6

35 VCC

34 2A7

33 2A8

32 GND

31 2A9

30 2A10

29 2OE2

FCT16827-3

etcTI

CY74FCT162827T Datasheet Preview

CY74FCT162827T Datasheet

20-Bit Buffers/Line Drivers

No Preview Available !

CY74FCT16827T

CY74FCT162827T

Pin Description

Name

Description

Output Enable Inputs (Active LOW)

Data Inputs

Three-State Outputs

Function Table[1]

Inputs

OE1

OE2

Outputs

Maximum Ratings[2, 3]

(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/Pin) ...........................−60 to +120 mA

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

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

(per MIL-STD-883, Method 3015)

Operating Range

Range

Industrial

Ambient

Temperature

−40°C to +85°C

VCC

5V ± 10%

Electrical Characteristics Over the Operating Range

Parameter

Description

VIH

VIL

VIK

IIH

IIL

IOZH

Input HIGH Voltage

Input LOW Voltage

Input Hysteresis[5]

Input Clamp Diode Voltage

Input HIGH Current

Input LOW Current

High Impedance Output

Current (Three-State Output pins)

IOZL High Impedance Output

Current (Three-State Output pins)

IOS Short Circuit Current[6]

IO Output Drive Current[6]

IOFF Power-Off Disable

Test Conditions

VCC=Min., IIN=−18 mA

VCC=Max., VI=VCC

VCC=Max., VI=GND

VCC=Max., VOUT=2.7V

VCC=Max., VOUT=0.5V

VCC=Max., VOUT=GND

VCC=Max., VOUT=2.5V

VCC=0V, VOUT≤4.5V[7]

Min.

2.0

Typ.[4] Max.

0.8

100

−0.7 −1.2

±1

Unit

µA

±1 µA

−80 −140 −200 mA

−50 −180 mA

±1 µA

Output Drive Characteristics for CY74FCT16827T

Parameter

Description

Test Conditions

Min. Typ.[4] Max. Unit

VOH Output HIGH Voltage

VCC=Min., IOH=−3 mA

2.5 3.5

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

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.

900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf

CY74FCT162827T Datasheet

20-Bit Buffers/Line Drivers

CY74FCT162827T Datasheet

20-Bit Buffers/Line Drivers

Similar Datasheet

Part Number Start With