HD74LS244P中文资料
HD74LS244
Octal Buffers / Line Drivers / Line Receivers
(non inverted three-state outputs)
REJ03D0463–0200
Rev.2.00
Feb.18.2005 Features
? Ordering Information
Part Name Package Type Package Code
(Previous Code)
Package
Abbreviation
Taping Abbreviation
(Quantity)
HD74LS244P DILP-20
pin PRDP0020AC-B
(DP-20NEV)
P —
HD74LS244FPEL SOP-20 pin (JEITA) PRSP0020DD-B
(FP-20DAV)
FP EL (2,000 pcs/reel)
HD74LS244RPEL SOP-20 pin (JEDEC) PRSP0020DC-A
(FP-20DBV)
RP EL (1,000 pcs/reel)
Note: Please consult the sales office for the above package availability. Pin Arrangement
Function Table
Inputs Output
G A Y
H X Z
L H H
L L L
Note: H; high level, L; low level, X; irrelevant, Z; off (high-impedance) state of a 3-state output
Block Diagram (1/2)
Absolute Maximum Ratings
Unit
Ratings
Item Symbol
Supply voltage V CC 7 V
Input voltage V IN 7 V
Power dissipation P T 400 mW
Storage temperature Tstg –65 to +150 °C
Note: Voltage value, unless otherwise noted, are with respect to network ground terminal.
Recommended Operating Conditions
Max
Unit
Min
Item Symbol
Typ
Supply voltage V CC 4.75 5.00 5.25 V
I OH — — –15 mA
Output current
I OL — — 24 mA
°C
75
Operating temperature Topr
–20
25
Electrical Characteristics
(Ta = –20 to +75 °C)
Item
Symbol min. typ.* max. Unit Condition V IH 2.0 — — V
Input voltage
V IL — — 0.8 V Hysteresis V T + – V T –
0.2 0.4 — V V CC = 4.75 V
2.4 — — V IL = 0.8 V, I OH = – 3 mA V OH 2.0 — — V
V IL = 0.5 V, I OH = – 15 mA V CC = 4.75 V,
V IH = 2 V
— — 0.4 I OL = 12 mA Output voltage
V OL — — 0.5 V
I OL = 24 mA V CC = 4.75 V, V IH = 2 V,
V IL = 0.8 V I OZH — — 20 V O = 2.7 V Off-state output current
I OZL — — –20 μA
V O = 0.4 V
V CC = 5.25 V, V IH = 2 V,
V IL = 0.8 V I IH — — 20 μA V CC = 5.25 V, V I = 2.7 V I IL — — –0.2 mA V CC = 5.25 V, V I = 0.4 V
Input current I I —
— 0.1 mA V CC = 5.25 V, V I = 7 V Short-circuit output
current
I OS –40
— –225 mA V CC = 5.25 V Outputs "H"
— 13 23
Outputs "L"
— 27 46
Supply current**
All outputs
disabled
I CC
— 32 54
mA V CC = 5.25 V Input clamp voltage V IK — — –1.5 V V CC = 4.75 V, I IN = –18 mA Notes: * V CC = 5 V, Ta = 25°C ** I CC is measured with all outputs open.
Switching Characteristics
(V CC = 5 V, Ta = 25°C)
Item Symbol min. typ. max. Unit Condition
t PLH — 12 18
Propagation delay time t PHL — 12 18
ns
t ZL — 20 30 ns
Output enable time
t ZH — 15 23 ns C L = 45 pF, R L = 667 ?
t LZ — 15 25 ns
Output disable time t HZ — 10 18 ns C L = 5 pF, R L = 667 ?
Note: Refer to Test Circuit and Waveform of the Common Item "TTL Common Matter (Document No.: REJ27D0005-0100)".
Package Dimensions
https://www.wendangku.net/doc/569494440.html, RENESAS SALES OFFICES
Refer to "https://www.wendangku.net/doc/569494440.html,/en/network" for the latest and detailed information.
Renesas Technology America, Inc.
450 Holger Way, San Jose, CA 95134-1368, U.S.A
Tel: <1> (408) 382-7500, Fax: <1> (408) 382-7501
Renesas Technology Europe Limited
Dukes Meadow, Millboard Road, Bourne End, Buckinghamshire, SL8 5FH, U.K.
Tel: <44> (1628) 585-100, Fax: <44> (1628) 585-900
Renesas Technology Hong Kong Ltd.
7th Floor, North Tower, World Finance Centre, Harbour City, 1 Canton Road, Tsimshatsui, Kowloon, Hong Kong
Tel: <852> 2265-6688, Fax: <852> 2730-6071
Renesas Technology Taiwan Co., Ltd.
10th Floor, No.99, Fushing North Road, Taipei, Taiwan
Tel: <886> (2) 2715-2888, Fax: <886> (2) 2713-2999
Renesas Technology (Shanghai) Co., Ltd.
Unit2607 Ruijing Building, No.205 Maoming Road (S), Shanghai 200020, China
Tel: <86> (21) 6472-1001, Fax: <86> (21) 6415-2952
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1 Harbour Front Avenue, #06-10, Keppel Bay Tower, Singapore 098632
Tel: <65> 6213-0200, Fax: <65> 6278-8001