74ACT299 데이터 시트보기 (PDF) - STMicroelectronics

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74ACT299

8 BIT PIPO SHIFT REGISTER WITH ASYNCHRONOUS CLEAR

STMicroelectronics 

74ACT299

8 BIT PIPO SHIFT REGISTER

WITH ASYNCHRONOUS CLEAR

s HIGH SPEED:

fMAX = 240MHz (TYP.) at VCC = 5V

s LOW POWER DISSIPATION:

ICC = 8µA(MAX.) at TA=25°C

s COMPATIBLE WITH TTL OUTPUTS

VIH = 2V (MIN.), VIL = 0.8V (MAX.)

s 50Ω TRANSMISSION LINE DRIVING

CAPABILITY

s SYMMETRICAL OUTPUT IMPEDANCE:

|IOH| = IOL = 24mA (MIN)

s BALANCED PROPAGATION DELAYS:

tPLH ≅ tPHL

s OPERATING VOLTAGE RANGE:

VCC (OPR) = 4.5V to 5.5V

s PIN AND FUNCTION COMPATIBLE WITH

74 SERIES 299

s IMPROVED LATCH-UP IMMUNITY

DESCRIPTION

The 74ACT299 is an advanced high-speed CMOS

8-BIT PIPO SHIFT REGISTER (3-STATE)

fabricated with sub-micron silicon gate and

double-layer metal wiring C2MOS technology.

These devices have four modes (HOLD, SHIFT

LEFT, SHIFT RIGHT and LOAD DATA). Each

mode is chosen by two function select inputs (S0,

S1) as shown in the Truth Table. When one or

PIN CONNECTION AND IEC LOGIC SYMBOLS

DIP

SOP

TSSOP

ORDER CODES

PACKAGE

DIP

SOP

TSSOP

TUBE

74ACT299B

74ACT299M

T&R

74ACT299MTR

74ACT299TTR

both enable inputs, (G1, G2) are high, the eight

input/output terminals are in the high-impedance

state; however sequential operation or clearing of

the register is not affected. Clear function is

asynchronousto clock.

The device is designed to interface directly High

Speed CMOS systems with TTL, NMOS and

CMOS output voltage levels.

All inputs and outputs are equipped with

protection circuits against static discharge, giving

them 2KV ESD immunity and transient excess

voltage.

April 2001

1/13

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