參數(shù)資料
型號(hào): 74HCT161D,653
廠商: NXP Semiconductors
文件頁(yè)數(shù): 7/12頁(yè)
文件大?。?/td> 0K
描述: IC SYNC 4BIT BINARY COUNT 16SOIC
產(chǎn)品培訓(xùn)模塊: Logic Packages
標(biāo)準(zhǔn)包裝: 2,500
系列: 74HCT
邏輯類型: 二進(jìn)制計(jì)數(shù)器
方向:
元件數(shù): 1
每個(gè)元件的位元數(shù): 4
復(fù)位: 異步
計(jì)時(shí): 同步
計(jì)數(shù)速率: 41MHz
觸發(fā)器類型: 正邊沿
電源電壓: 4.5 V ~ 5.5 V
工作溫度: -40°C ~ 125°C
安裝類型: 表面貼裝
封裝/外殼: 16-SOIC(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 16-SO
包裝: 帶卷 (TR)
December 1990
4
Philips Semiconductors
Product specication
Presettable synchronous 4-bit binary
counter; asynchronous reset
74HC/HCT161
FUNCTION TABLE
Note
1. The TC output is HIGH when CET is HIGH and the counter is at terminal count (HHHH).
H = HIGH voltage level
h = HIGH voltage level one set-up time prior to the LOW-to-HIGH CP transition
L = LOW voltage level
I = LOW voltage level one set-up time prior to the LOW-to-HIGH CP transition
q = lower case letters indicate the state of the referenced output one set-up time prior to the
LOW-to-HIGH CP transition
X = don’t care
↑ = LOW-to-HIGH CP transition
OPERATING MODE
INPUTS
OUTPUTS
MR
CP
CEP
CET
PE
Dn
Qn
TC
reset (clear)
L
X
L
parallel load
H
X
I
h
L
H
L
(1)
count
H
h
X
count
(1)
hold
(do nothing)
H
X
I
X
I
h
X
qn
(1)
L
Fig.4 Functional diagram.
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