參數(shù)資料
型號: 74HC191D,653
廠商: NXP Semiconductors
文件頁數(shù): 4/14頁
文件大?。?/td> 0K
描述: IC 4BIT BINAR UP/DN COUNT 16SOIC
產(chǎn)品培訓(xùn)模塊: Logic Packages
標(biāo)準(zhǔn)包裝: 2,500
系列: 74HC
邏輯類型: 二進(jìn)制計(jì)數(shù)器
方向: 上,下
元件數(shù): 1
每個元件的位元數(shù): 4
計(jì)時: 同步
計(jì)數(shù)速率: 39MHz
觸發(fā)器類型: 正邊沿
電源電壓: 2 V ~ 6 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
12
Philips Semiconductors
Product specication
Presettable synchronous 4-bit binary
up/down counter
74HC/HCT191
AC WAVEFORMS
Fig.10 Waveforms showing the clock (CP) to output (Qn) propagation delays, the clock pulse width and the
maximum clock pulse frequency.
(1) HC : VM = 50%; VI = GND to VCC.
HCT : VM = 1.3 V; VI = GND to 3 V.
Fig.11 Waveforms showing the clock and count enable inputs (CP, CE) to ripple clock output (RC) propagation
delays.
(1) HC : VM = 50%; VI = GND to VCC.
HCT : VM = 1.3 V; VI = GND to 3 V.
Fig.12 Waveforms showing the input (Dn) to output (Qn) propagation delays.
(1) HC : VM = 50%; VI = GND to VCC.
HCT : VM = 1.3 V; VI = GND to 3 V.
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