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參數(shù)資料
| 型號： | 74F166 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | 8-bit bidirectional universal shift register |
| 中文描述： | 8位雙向通用移位寄存器 |
| 文件頁數(shù)： | 2/12頁 |
| 文件大?。?/td> | 94K |
| 代理商： | 74F166 |
Philips Semiconductors
Product specification
74F166
8-bit bidirectional universal shift register
2
Feb. 14, 1991
853–0349 01718
FEATURES
High impedance NPN base inputs for reduced loading
(20
μ
A in high and low states)
Synchronous parallel to serial applications
Synchronous serial data input for easy expansion
Clock enable for ”do nothing” mode
Asynchronous master reset
Expandable to 16 bits in 8–bit increments
Industrial temperature range available (–40
°
C to +85
°
C)
DESCRIPTION
The 74F166 is a high speed 8–bit shift register that has fully
synchronous serial parallel data entry selected by an active
low parallel enable (PE) input. When the PE is low one setup
time before the low–to–high clock transition, parallel data is
entered into the register.
When PE is high, data is entered into internal bit position Q0
from serial data input (Ds), and the remaining bits are shifted
one place to the right (Q0
→
Q1
→
Q2, etc.) with each
positive going clock transition.
For expansion of the register in parallel to serial converters,
the Q7 output is connected to the Ds input of the succeeding
stage. The clock input is gated OR structure which allows
one input to be used as an active–low clock enable (CE)
input. The pin assignment for the CP and CE inputs is
arbitrary and can be reversed for layout convenience. The
low–to–high transition of CE input should only take place
while the CP is high for predictable operation. A low on the
master reset (MR) input overrides all other inputs and clears
the register asynchronously, forcing all bit positions to a low
state.
TYPE
TYPICAL f
max
TYPICAL SUPPLY CUR-
RENT( TOTAL)
74F166
175MHz
50mA
ORDERING INFORMATION
ORDER CODE
COMMERCIAL RANGE
V
CC
= 5V
±
10%,
T
amb
= 0
°
C to +70
°
C
N74F166N
INDUSTRIAL RANGE
V
CC
= 5V
±
10%,
T
amb
= –40
°
C to +85
°
C
I74F166N
DESCRIPTION
PKG DWG #
16–pin plastic DIP
SOT38-4
16–pin plastic SO
N74F166D
I74F166D
SOT109-1
INPUT AND OUTPUT LOADING AND FAN OUT TABLE
PINS
DESCRIPTION
74F (U.L.) HIGH/
LOW
LOAD VALUE HIGH/
LOW
D0 – D7
Parallel data inputs
1.0/0.033
20
μ
A/20
μ
A
40
μ
A/40
μ
A
20
μ
A/20
μ
A
20
μ
A/20
μ
A
20
μ
A/20
μ
A
40
μ
A/40
μ
A
Ds
Serial data input (shift right)
2.0/0.066
CP
Clock input (active rising edge)
1.0/0.033
CE
Clock enable input (active low)
1.0/0.033
PE
Parallel enable input (active low)
1.0/0.033
MR
Master reset input (active low)
2.0/0.066
Q7
Data output
50/33
1.0mA/20mA
Note to input and output loading and fan out table
1. One (1.0) FAST unit load is defined as: 20
μ
A in the high state and 0.6mA in the low state.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 74F169 | 4-bit up/down binary synchronous counter |
| 74F169 | 4-Stage Synchronous Bidirectional Counter |
| 74F169PC | 4-Stage Synchronous Bidirectional Counter |
| 74F169SC | 4-Stage Synchronous Bidirectional Counter |
| 74F169SJ | 4-Stage Synchronous Bidirectional Counter |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74F166D | 制造商:NXP Semiconductors 功能描述: |
| 74F166N | 制造商:NXP Semiconductors 功能描述: |
| 74F168DC | 制造商:FAIR 功能描述:Counter, Up/Down, Decade, 16 Pin, Ceramic, DIP |
| 74F168PCQR | 制造商:Freescale Semiconductor 功能描述:Counter, Up/Down, Decade, 16 Pin, Plastic, DIP |
| 74F169 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:4-Stage Synchronous Bidirectional Counter |
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