參數(shù)資料
型號(hào)： SN74LS85D
廠商： MOTOROLA INC
元件分類： 通用總線功能
英文描述： 4-BIT MAGNITUDE COMPARATOR
中文描述： LS SERIES, 4-BIT MAGNITUDE COMPARATOR, TRUE OUTPUT, PDSO16
封裝： SOIC-16
文件頁數(shù)： 3/4頁
文件大?。?/td> 102K
代理商： SN74LS85D
NOTE:
The SN54/74LS85 can be used as a 5-bit comparator
only when the outputs are used to drive the A0–A3 and
B0–B3 inputs of another SN54/74LS85 as shown in
Figure 2 in positions #1, 2, 3, and 4.
5-86
FAST AND LS TTL DATA
SN54/74LS85
Figure 1. Comparing Two n-Bit Words
L = LOW LEVEL
H = HIGH LEVEL
A0
A1A2
A3
B0
B1B2
B3
A0
A1A2
A3
B0
B1B2
B3
A0
A1A2
A3
B0
B1B2
B3
L
L
H
IA > B
IA < B
IA = B
OA > B
OA < B
OA = B
IA > B
IA < B
IA = B
OA > B
OA < B
OA = B
A > B
A < B
A = B
SN54/74LS85
SN54/74LS85
A
A
An
A
B
B
B
B
APPLICATIONS
Figure 2 shows a high speed method of comparing two 24-bit words with only two levels of device delay. With the technique
shown in Figure 1, six levels of device delay result when comparing two 24-bit words. The parallel technique can be expanded
to any number of bits, see Table 1.
Table 1
WORD LENGTH
NUMBER OF PKGS.
1–4 Bits
5–24 Bits
25–120 Bits
1
2–6
8–31
MSB = MOST SIGNIFICANT BIT
LSB = LEAST SIGNIFICANT BIT
L = LOW LEVEL
H = HIGH LEVEL
NC = NO CONNECTION
A0A1A2A3B0B1B2B3
A0A1A2
IA > B
IA < B
IA = B
A3B0B1B2B3
L
L
H
OA > B
OA < B
OA = B
#5
(LSB)
INPUTS
A0A1A2
IA > B
IA < B
IA = B
A3B0B1B2B3
OA > B
OA < B
OA = B
#1
L
NC
A20A21
B23
B22
B21
B20
A23
A22
A19
B19
(MSB)
A5A6A7A8B5B6B7B8
A0A1A2
IA > B
IA < B
IA = B
A3B0B1B2B3
OA > B
OA < B
OA = B
#4
NC
L
A4
B4
A0A1A2
IA > B
IA < B
IA = B
A3B0B1B2B3
OA > B
OA < B
OA = B
#3
NC
L
A9
B9
A10A11
B13
B12
B11
B10
A13
A12
A0A1A2
IA > B
IA < B
IA = B
A3B0B1B2B3
OA > B
OA < B
OA = B
#2
NC
L
A14
B14
A15A16
B18
B17
B16
B15
A18
A17
OUTPUTS
A0A1A2
IA > B
IA < B
IA = B
A3B0B1B2B3
OA > B
OA < B
OA = B
#6
INPUTS
Figure 2. Comparison of Two 24-Bit Words
相關(guān)PDF資料
PDF描述
SN74LS85N Silicon Controlled Rectifier; Package: TO-220 3 LEAD STANDARD; No of Pins: 3; Container: Rail; Qty per Container: 50
SN74LS85 Sensitive Gate Silicon Controlled Rectifier; Package: TO-92 (TO-226) 5.33mm Body Height; No of Pins: 3; Container: Tape and Reel; Qty per Container: 2000
SN74LS85D Sensitive Gate Silicon Controlled Rectifier; Package: TO-225; No of Pins: 3; Container: Bulk; Qty per Container: 500
SN74LS85N Silicon Controlled Rectifier; Package: DPAK 4 LEAD Single Gauge Surface Mount; No of Pins: 4; Container: Tape and Reel; Qty per Container: 2500
SN74LS86 Silicon Controlled Rectifier; Package: DPAK 4 LEAD Single Gauge Surface Mount; No of Pins: 4; Container: Tape and Reel; Qty per Container: 2500
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SN74LS85D 制造商:Texas Instruments 功能描述:Voltage Comparator IC
SN74LS85DE4 功能描述:校驗(yàn)器 IC 4-bit binary or BCD Magnitude Comparator RoHS:否 制造商:STMicroelectronics 產(chǎn)品: 比較器類型: 通道數(shù)量: 輸出類型:Push-Pull 電源電壓-最大:5.5 V 電源電壓-最小:1.1 V 補(bǔ)償電壓（最大值）:6 mV 電源電流（最大值）:1350 nA 響應(yīng)時(shí)間: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel
SN74LS85DG4 功能描述:校驗(yàn)器 IC 4B Magnitude Comparators RoHS:否 制造商:STMicroelectronics 產(chǎn)品: 比較器類型: 通道數(shù)量: 輸出類型:Push-Pull 電源電壓-最大:5.5 V 電源電壓-最小:1.1 V 補(bǔ)償電壓（最大值）:6 mV 電源電流（最大值）:1350 nA 響應(yīng)時(shí)間: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel
SN74LS85DR 功能描述:校驗(yàn)器 IC 4-bit binary or BCD Magnitude Comparator RoHS:否 制造商:STMicroelectronics 產(chǎn)品: 比較器類型: 通道數(shù)量: 輸出類型:Push-Pull 電源電壓-最大:5.5 V 電源電壓-最小:1.1 V 補(bǔ)償電壓（最大值）:6 mV 電源電流（最大值）:1350 nA 響應(yīng)時(shí)間: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel
SN74LS85DRE4 功能描述:校驗(yàn)器 IC 4-bit binary or BCD Magnitude Comparator RoHS:否 制造商:STMicroelectronics 產(chǎn)品: 比較器類型: 通道數(shù)量: 輸出類型:Push-Pull 電源電壓-最大:5.5 V 電源電壓-最小:1.1 V 補(bǔ)償電壓（最大值）:6 mV 電源電流（最大值）:1350 nA 響應(yīng)時(shí)間: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel
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