參數(shù)資料
型號(hào): 74LVC169DB,112
廠商: NXP Semiconductors
文件頁(yè)數(shù): 21/24頁(yè)
文件大小: 0K
描述: IC SYNC 4BIT BIN COUNTER 16SSOP
產(chǎn)品培訓(xùn)模塊: Logic Packages
標(biāo)準(zhǔn)包裝: 78
系列: 74LVC
邏輯類(lèi)型: 二進(jìn)制計(jì)數(shù)器
方向: 上,下
元件數(shù): 1
每個(gè)元件的位元數(shù): 4
計(jì)時(shí): 同步
計(jì)數(shù)速率: 150MHz
觸發(fā)器類(lèi)型: 正邊沿
電源電壓: 2.7 V ~ 3.6 V
工作溫度: -40°C ~ 125°C
安裝類(lèi)型: 表面貼裝
封裝/外殼: 16-SSOP(0.209",5.30mm 寬)
供應(yīng)商設(shè)備封裝: 16-SSOP
包裝: 管件
其它名稱(chēng): 74LVC169DB
74LVC169DB-ND
935210580112
74LVC169
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2012. All rights reserved.
Product data sheet
Rev. 6 — 29 November 2012
6 of 24
NXP Semiconductors
74LVC169
Presettable synchronous 4-bit up/down binary counter
6.
Functional description
[1]
H = HIGH voltage level steady state
h = HIGH voltage level one set-up time prior to the LOW-to-HIGH clock transition
L = LOW voltage level steady state
l = LOW voltage level one set-up time prior to the LOW-to-HIGH clock transition
qn = Lower case letters indicate state of referenced output prior to the LOW-to-HIGH clock transition
X = don’t care
= LOW-to-HIGH clock transition
* = The TC is LOW when CET is LOW and the counter is at terminal count
Terminal count up is (HHHH) and terminal count down is (LLLL)
Table 3.
Function table[1]
Operating mode
Input
Output
CP
U/D
CEP
CET
PE
Dn
Qn
TC
Parallel load (Dn to Qn)
XX
XI
I
L
*
XX
Xl
h
H
*
Count up (increment)
h
I
h
X
count up
*
Count down (decrement)
I
h
X
count down
*
Hold (do nothing)
Xh
Xqn
*
XX
Xh
Xqn
H
Fig 6.
State diagram
001aaa647
0
15
14
13
12
1
2
3
4
5
6
7
11
count down
count up
10
9
8
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