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參數(shù)資料
| 型號： | 74F269 |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | 通用總線功能 |
| 英文描述： | 8-bit bidirectional binary counter |
| 中文描述： | 8位雙向二進制計數(shù)器 |
| 文件頁數(shù)： | 2/14頁 |
| 文件大?。?/td> | 118K |
| 代理商： | 74F269 |
Philips Semiconductors
Product specification
74F269
8–bit bidirectional binary counter
2
1996 Jan 05
853–0056 16186
FEATURES
Synchronous counting and loading
Built-in look-ahead carry capability
Count frequency 115MHz typ
Supply current 95mA typ
DESCRIPTION
The 74F269 is a fully synchronous 8-stage Up/Down Counter
featuring a preset capability for programmable operation, carry
look-ahead for easy cascading and a U/D input to control the
direction of counting. All state changes, whether in counting or
parallel loading, are initiated by the rising edge of the clock.
TYPE
TYPICAL f
MAX
TYPICAL
SUPPLY CURRENT
(TOTAL)
74F269
115MHz
95mA
PIN CONFIGURATION
24
23
22
21
20
19
18
17
16
15
14
13
12
10
11
9
8
7
6
5
4
3
2
1
U/D
CEP
CET
TC
PE
P0
P1
P2
P3
V
CC
P4
P5
P6
P7
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
CP
GND
SF00834
ORDERING INFORMATION
DESCRIPTION
COMMERCIAL RANGE
V
CC
= 5V
±
10%, T
amb
= 0
°
C to +70
°
C
N74F269N
PKG DWG #
24-Pin Plastic Slim DIP (300mil)
SOT222-1
24-Pin Plastic SOL
N74F269D
SOT137-1
24-Pin Plastic SSOP type II
N74F269DB
SOT340-1
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
PINS
DESCRIPTION
74F(U.L.)
HIGH/LOW
LOAD VALUE
HIGH/LOW
20
μ
A/0.6mA
20
μ
A/0.6mA
20
μ
A/0.6mA
20
μ
A/0.6mA
20
μ
A/0.6mA
20
μ
A/0.6mA
P0 - P7
Parallel Data inputs
1.0/1.0
PE
Parallel Enable input (active Low)
1.0/1.0
U/D
Up/Down count control input
1.0/1.0
CEP
Count Enable Parallel input (active Low)
1.0/1.0
CET
Count Enable Trickle input (active Low)
1.0/1.0
CP
Clock input
1.0/1.0
TC
Terminal Count output (active Low)
50/33
1.0mA/20mA
Q0 - Q7
NOTE:
One (1.0) FAST Unit Load is defined as: 20
μ
A in the High state and 0.6mA in the Low state.
Flip-flop outputs
50/33
1.0mA/20mA
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 74F269 | 8-Bit Bidirectional Binary Counter |
| 74F269SC | 8-Bit Bidirectional Binary Counter |
| 74F269SCX | Synchronous Up/Down Counter |
| 74F269SPC | 8-Bit Bidirectional Binary Counter |
| 74F273A | CABLE ASSEMBLY, DVI TO HDMI, 15M; Connector type A:DVI; Connector type B:HDMI; Length, lead:15m; Cable type:Multicore HDMI RoHS Compliant: Yes |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74F269_07 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:8-Bit Bidirectional Binary Counter |
| 74F269_ZBH3026B WAF | 制造商:Fairchild Semiconductor Corporation 功能描述: |
| 74F269N | 制造商:NXP Semiconductors 功能描述: |
| 74F269SC | 功能描述:計數(shù)器移位寄存器 8-Bit Bidir Bin Ctr RoHS:否 制造商:Texas Instruments 計數(shù)器類型: 計數(shù)順序:Serial to Serial/Parallel 電路數(shù)量:1 封裝 / 箱體:SOIC-20 Wide 邏輯系列: 邏輯類型: 輸入線路數(shù)量:1 輸出類型:Open Drain 傳播延遲時間:650 ns 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝:Reel |
| 74F269SC | 制造商:Fairchild Semiconductor Corporation 功能描述:COUNTER LOGIC IC ((NW)) |
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