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參數(shù)資料
型號: 74LV393DB,118
廠商: NXP Semiconductors
文件頁數(shù): 5/12頁
文件大?。?/td> 0K
描述: IC DUAL 4BIT BIN RIPPLE 14SSOP
產品培訓模塊: Logic Packages
標準包裝: 2,000
系列: 74LV
邏輯類型: 二進制計數(shù)器
方向:
元件數(shù): 2
每個元件的位元數(shù): 4
復位: 異步
計數(shù)速率: 20MHz
觸發(fā)器類型: 負邊沿
電源電壓: 1 V ~ 3.6 V
工作溫度: -40°C ~ 125°C
安裝類型: 表面貼裝
封裝/外殼: 14-SSOP(0.209",5.30mm 寬)
供應商設備封裝: 14-SSOP
包裝: 帶卷 (TR)
其它名稱: 74LV393DB-T
74LV393DB-T-ND
935198240118
Philips Semiconductors
Product specification
74LV393
Dual 4-bit binary ripple counter
2
1998 Jun 10
853–1936 19545
FEATURES
Optimized for Low Voltage applications: 1.0 to 3.6V
Accepts TTL input levels between V
CC = 2.7V and VCC = 3.6V
Typical V
OLP (output ground bounce) t 0.8V @ VCC = 3.3V,
Tamb = 25°C
Typical V
OHV (output VOH undershoot) u 2V @ VCC = 3.3V,
Tamb = 25°C
Two 4-bit binary counters with individual clocks
Divide-by any binary module up to 28 in one package
Two master resets to clear each 4-bit counter individually
Output capability: standard
I
CC category: MSI
DESCRIPTION
The 74LV393 is a low–voltage Si-gate CMOS device and is pin and
function compatible with 74HC/HCT393.
The 74LV393 is a dual 4-bit binary ripple counter with separate
clocks (1CP, 2CP) and master reset (1MR, 2MR) inputs to each
counter.
The operation of each half of the ‘‘393’’ is the same as the ‘‘93’’
except no external clock connections are required. The counters are
triggered by a HIGH-to-LOW transition of the clock inputs. The
counter outputs are internally connected to provide clock inputs to
succeeding stages. The outputs of the ripple counter do not change
synchronously and should not be used for high-speed address
decoding.
The master resets are active-HIGH asynchronous inputs to each
4-bit counter identified by the ‘‘1’’ and ‘‘2’’ in the pin description.
A HIGH level on the nMR input overrides the clock and sets the
outputs LOW.
QUICK REFERENCE DATA
GND = 0V; Tamb = 25°C; tr = tf v2.5 ns
SYMBOL
PARAMETER
CONDITIONS
TYPICAL
UNIT
tPHL/tPLH
Propagation delay
nCP to nQ0
nQ to nQn+1
nMR to nQn
CL = 15pF
VCC = 3.3V
12
4
11
ns
fmax
Maximum clock frequency
99
MHz
CI
Input capacitance
3.5
pF
CPD
Power dissipation capacitance per flip-flop
VI = GND to VCC 1
23
pF
NOTE:
1. CPD is used to determine the dynamic power dissipation (PD in W)
PD = CPD
VCC2
fi )S (CL
VCC2
fo) where:
fi = input frequency in MHz; CL = output load capacity in pF;
fo = output frequency in MHz; VCC = supply voltage in V;
S (CL
VCC2
fo) = sum of the outputs.
ORDERING INFORMATION
PACKAGES
TEMPERATURE RANGE
OUTSIDE NORTH AMERICA
NORTH AMERICA
PKG. DWG. #
14-Pin Plastic DIL
–40
°C to +125°C
74LV393 N
SOT27-1
14-Pin Plastic SO
–40
°C to +125°C
74LV393 D
SOT108-1
14-Pin Plastic SSOP Type II
–40
°C to +125°C
74LV393 DB
SOT337-1
14-Pin Plastic TSSOP Type I
–40
°C to +125°C
74LV393 PW
74LV393PW DH
SOT402-1
PIN CONFIGURATION
SV00672
1CP
1MR
1Q0
1Q2
1Q3
GND
VCC
2CP
2MR
2Q0
2Q1
2Q2
2Q3
1
2
3
4
5
6
7
14
13
12
11
10
9
8
1Q1
PIN DESCRIPTION
PIN
NUMBER
SYMBOL
FUNCTION
1, 13
1CP, 2CP
Clock inputs
(HIGH-to-LOW, edge-triggered)
2, 12
1MR, 2MR
Asynchronous master reset inputs
(active HIGH)
3, 4, 5, 6
11, 10, 9, 8
1Q0 to 1Q3
2Q0 to 2Q3
Flip-flop outputs
7
GND
Ground (0V)
14
VCC
Positive supply voltage
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