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HD74LS279
Quadruple S-R Latches
REJ03D0474-0400 Rev.4.00 May 10, 2006
Features
* Ordering Information
Part Name HD74LS279P HD74LS279FPEL Package Type DILP-16 pin SOP-16 pin (JEITA) Package Code (Previous Code) PRDP0016AE-B (DP-16FV) Package Abbreviation P Taping Abbreviation (Quantity) -- EL (2,000 pcs/reel)
PRSP0016DH-B FP (FP-16DAV) Note: Please consult the sales office for the above package availability.
Pin Arrangement
1R 1S1 1S2 1Q 2R 2S 2Q GND
1 2 3 4 5 6 7 8
16 15 14 13 12 11 10 9
VCC 4S 4R 4Q 3S2 3S1 3R 3Q
(Top view)
Rev.4.00, May 10, 2006, page 1 of 4
HD74LS279
Function Table
Inputs S** H L H L R H H L L Output Q Q0 H L H*
Notes: 1. H; high level, L; low level 2. Q0; The level of Q before the indidicated input conditions were established. 3. *; This output level is psodo stable; that is it may not persist when S and R inputs return to their inactive (high) level. 4. **; For latches with double S inputs; H; both S inputs high, L; one or both S inputs low.
Block Diagram (1/4)
R
S1 S2
Q
Absolute Maximum Ratings
Item Supply voltage Input voltage Power dissipation Storage temperature Symbol VCC VIN PT Tstg Ratings 7 7 400 -65 to +150 Unit V V mW C
Note: Voltage value, unless otherwise noted, are with respect to network ground terminal.
Recommended Operating Conditions
Item Supply voltage Output current Operating temperature Symbol VCC IOH IOL Topr Min 4.75 -- -- -20 Typ 5.00 -- -- 25 Max 5.25 -400 8 75 Unit V A mA C
Rev.4.00, May 10, 2006, page 2 of 4
HD74LS279
Electrical Characteristics
(Ta = -20 to +75 C)
Item Input voltage Symbol VIH VIL VOH Output voltage VOL IIH IIL min. 2.0 -- 2.7 -- -- -- -- -- -20 -- -- typ.* -- -- -- -- -- max. -- 0.8 -- 0.4 0.5 20 -0.4 0.1 -100 7 -1.5 Unit V V V V A mA mA mA mA V Condition
VCC = 4.75 V, VIH = 2 V, VIL = 0.8 V, IOH = -400 A IOL = 4 mA VCC = 4.75 V, VIH = 2 V, IOL = 8 mA VIL = 0.8 V VCC = 5.25 V, VI = 2.7 V VCC = 5.25 V, VI = 0.4 V VCC = 5.25 V, VI = 7 V VCC = 5.25 V VCC = 5.25 V VCC = 4.75 V, IIN = -18 mA
Input current
II Short-circuit output current IOS -- Supply current** ICC 3.8 Input clamp voltage VIK -- Notes: * VCC = 5 V, Ta = 25C ** ICC is measured with all R inputs grounded, all S inputs at 4.5 V, and all outputs open.
Switching Characteristics
(VCC = 5 V, Ta = 25C)
Item Propagation delay time Symbol tPLH tPHL tPHL Inputs S R Output Q min. -- -- -- typ. 12 13 15 max. 22 21 27 Unit ns Condition CL = 15 pF, RL = 2 k
Note: Refer to Test Circuit and Waveform of the Common Item "TTL Common Matter (Document No.: REJ27D00050100)".
Rev.4.00, May 10, 2006, page 3 of 4
HD74LS279
Package Dimensions
JEITA Package Code P-DIP16-6.3x19.2-2.54 RENESAS Code PRDP0016AE-B Previous Code DP-16FV MASS[Typ.] 1.05g
D
16
9
1 0.89 b3
8
Z
A1
A
E
Reference Symbol
Dimension in Millimeters
Min
e
bp
e1
c
( Ni/Pd/Au plating )
e1 D E A A1 bp b3 c e Z L
Nom Max 7.62 19.2 20.32 6.3 7.4 5.06
L
0.51 0.40 0.48 0.56 1.30 0.19 0.25 0.31 0 15 2.29 2.54 2.79 1.12 2.54
JEITA Package Code P-SOP16-5.5x10.06-1.27
RENESAS Code PRSP0016DH-B
Previous Code FP-16DAV
MASS[Typ.] 0.24g
*1
D F 9
16
NOTE) 1. DIMENSIONS"*1 (Nom)"AND"*2" DO NOT INCLUDE MOLD FLASH. 2. DIMENSION"*3"DOES NOT INCLUDE TRIM OFFSET.
bp
HE
E
Index mark
*2
Terminal cross section ( Ni/Pd/Au plating )
1 Z e
*3
8 bp x M L1
Reference Dimension in Millimeters Symbol
c
A1
y
L
Detail F
D E A2 A1 A bp b1 c c1 HE e x y Z L L1
Min Nom Max 10.06 10.5 5.50
0.00 0.10 0.20 2.20 0.34 0.40 0.46 0.15 0.20 0.25 0 8 7.50 7.80 8.00 1.27 0.12 0.15 0.80 0.50 0.70 0.90 1.15
Rev.4.00, May 10, 2006, page 4 of 4
A
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