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HD74BC374AFPEL中文资料

HD74BC374A

Octal D Type Flip Flops With 3 State Outputs

REJ03D0284–0300Z

(Previous ADE-205-010A (Z))

Rev.3.00

Jul.16.2004 Description

The HD74BC374A provides high drivability and operation equal to or better than high speed bipolar standard logic IC by using Bi-CMOS process. The device features low power dissipation that is about 1/5 of high speed bipolar logic IC, when the frequency is 10 MHz. The device has eight edge triger D type flip flop with three state outputs in a 20 pin package. Data at the D inputs meeting set up reguirements, are transferred to the Q outputs on positive going transitions of the clock input. When the latch enable goes low, data at the D inputs will be retained at the outputs until latch enable returns high again. When a high logic level is applied to the output control input, all outputs go to a high impedance state, regardless of what signals are present at the other inputs and the state of the storage elements.

Features

?Input/Output are at high impedance state when power supply is off.

?Built in input pull up circuit can make input pins be open, when not used.

?TTL level input

?Wide operating temperature range

Ta = –40 to + 85°C

?Ordering Information

Part Name Package Type Package Code Package

Abbreviation Taping Abbreviation

(Quantity)

HD74BC374AFPEL SOP-20 pin (JEITA)FP-20DAV FP EL (2,000 pcs/reel) Function Table

HD74BC374AFPEL中文资料

L:Low level

X:Immaterial

Z:High impedance

:Low to high transition

Pin Arrangement

HD74BC374AFPEL中文资料

Absolute Maximum Ratings

Item

Symbol

Rating

Unit

Supply voltage V CC –0.5 to +7.0V Input diode current I IK ±30mA Input voltage V IN –0.5 to +7.5V Output voltage V OUT –0.5 to +7.5V Off state output voltage V OUT(off)–0.5 to +5.5V Storage temperature Tstg

–65 to +150

°C

Note:

1.The absolute maximum ratings are values which must not individually be exceeded, and furthermore, no two

of which may be realized at the same time.

Recommended Operating Conditions

Item

Symbol

Min

Typ

Max

Unit

Supply voltage V CC 4.5 5.0 5.5V Input voltage

V IN 0—V CC V Output voltage

V OUT 0—V CC V Operating temperature

Topr

–40

85°C Input rise/fall time *1t r , t f 0—

8

ns/V

Note: 1.This item guarantees maximum limit when one input switches.

Waveform: Refer to test circuit of switching characteristics.

Logic Diaglam

HD74BC374AFPEL中文资料

Electrical Characteristics (Ta = –40°C to +85°C)

Item

Symbol V CC (V)

Min Max Unit

Test Conditions

Input voltage V IH 2.0—V V IL —0.8V Output voltage

V OH 4.5 2.4—V I OH = –3 mA 4.5 2.0—V I OH = –15 mA V OL

4.5—0.4V I OL = 24 mA 4.5—0.5V I OL = 48 mA Input diode voltage V IK 4.5—–1.2V I IN = –18 mA Input current

I I

5.5— 1.0μA V IN = 5.5 V 5.5—–250μA V IN = 0 V 5.5

—100μA V IN = 7.0 V Short circuit output current *1

I OS 5.5–100–225mA V IN = 0 or 5.5 V Off state output current I OZH 5.5—50μA V O = 2.7 V I OZL 5.5—–50μA V O = 0.5 V

Supply current

I CCL 5.5—29.5mA V IN = 0 or 5.5 V All output is “L”I CCH 5.5— 2.5mA V IN = 0 or 5.5 V All output is “H”I CCZ

5.5—

2.5

mA

V IN = 0 or 5.5 V All output is “Z”

I CCT *2 5.5— 1.5mA V IN = 3.4 or 0.5 V

Notes :1.Not more than one output should be shorted at a time and duration of the short circuit should not exceed one

second.

2.When input by the TTL level, it shows I CC increase at per one input pin.

Switching Test Method (C L = 50 pF)

Ta = 25°C V CC = 5.0 V

Ta = –40 to 85°C V CC = 5.0 V ±10%Item

Symbol Min Max Min Max Unit Test Conditions Propagation CK →

Q t PLH 3.08.0 3.010.0ns See under figure delay time

t PHL 3.08.0 3.010.0Output enable time t ZH 3.09.0 3.011.0ns t ZL 3.09.0 3.011.0Output disable time t HZ 3.08.0 3.010.0ns t LZ 3.08.0 3.010.0Setup time t s (H) 2.0— 2.0—ns t s (L) 2.0— 2.0—Hold time t h (H) 2.0— 2.0—ns t h (L) 2.0— 2.0—Pulse width t w (H) 6.0

6.0—ns

t w (L) 6.0—

6.0—

Input capacitance C IN 3.0(Typ)—pF V IN = V CC or GND Output capacitance

C O

15.0(Typ)

pF

V O = V CC or GND

Test Circuit

HD74BC374AFPEL中文资料

HD74BC374AFPEL中文资料

Waveforms-2

HD74BC374AFPEL中文资料

HD74BC374AFPEL中文资料

Package Dimensions

HD74BC374AFPEL中文资料

HD74BC374AFPEL中文资料

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