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74act245g4

Showing 108 Results for 74act245g4, including 74ACT245,74ACT245, etc. You can look for possible substitutions between devices by comparing the similarities and differences between them.

Part Number	Manufacturer	Description	Datasheet
74ACT245	ON Semiconductor	ACT SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20	Download
74ACT245	STMicroelectronics	OCTAL BUS TRANSCEIVER WITH 3 STATE OUTPUTS (NON INVERTED)	Download
74ACT245	Fairchild	Octal Bidirectional Transceiver with 3-STATE Inputs/Outputs	Download
74ACT245_08	Fairchild	74AC245, 74ACT245 Octal Bidirectional Transceiver with 3-STATE Inputs/Outputs	Download
74ACT245B	STMicroelectronics	Bus Transceivers Octal Bus Tranceiver	Download
74ACT245CW	Rochester Electronics	Bus Transceiver, ACT Series, 1-Func, 8-Bit, True Output, CMOS, WAFER	Download
74ACT245CW	Fairchild	Bus Transceiver, ACT Series, 1-Func, 8-Bit, True Output, CMOS, WAFER	Download
74ACT245D	NXP	IC ACT SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20, Bus Driver/Transceiver	Download
74ACT245D	Philips Semiconductors (NXP Semiconductors N.V.)	Bus Driver/Transceiver, 1-Func, 8-Bit, True Output, CMOS, PDSO20,	Download
74ACT245DB	NXP	IC ACT SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20, Bus Driver/Transceiver	Download
74ACT245DB	Philips Semiconductors (NXP Semiconductors N.V.)	Bus Driver/Transceiver, 1-Func, 8-Bit, True Output, CMOS, PDSO20,	Download
74ACT245DB-T	NXP	IC ACT SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20, Bus Driver/Transceiver	Download
74ACT245DC	Texas Instruments	ACT SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, CDIP20, CERAMIC, DIP-20	Download
74ACT245DC	Fairchild	Bus Transceiver, ACT Series, 1-Func, 8-Bit, True Output, CMOS, CDIP20, CERAMIC, DIP-20	Download
74ACT245DCQR	Texas Instruments	ACT SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, CDIP20, CERAMIC, DIP-20	Download
74ACT245DCQR	Fairchild	Bus Transceiver, ACT Series, 1-Func, 8-Bit, True Output, CMOS, CDIP20, CERAMIC, DIP-20	Download
74ACT245D-T	NXP	IC ACT SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20, Bus Driver/Transceiver	Download
74ACT245FC	Fairchild	Bus Transceiver, ACT Series, 1-Func, 8-Bit, True Output, CMOS, CDFP20, CERAMIC, FP-20	Download
74ACT245FC	Texas Instruments	ACT SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, CDFP20, CERAMIC, FP-20	Download
74ACT245FCQR	Texas Instruments	ACT SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, CDFP20, CERAMIC, FP-20	Download
74ACT245FCQR	Fairchild	Bus Transceiver, ACT Series, 1-Func, 8-Bit, True Output, CMOS, CDFP20, CERAMIC, FP-20	Download
74ACT245FCT	Fairchild	Bus Transceiver, ACT Series, 1-Func, 8-Bit, True Output, CMOS, CDFP20, CERAMIC, FP-20	Download
74ACT245FCTR	Fairchild	Bus Transceiver, ACT Series, 1-Func, 8-Bit, True Output, CMOS, CDFP20, CERAMIC, FP-20	Download
74ACT245FCX	Fairchild	Bus Transceiver, ACT Series, 1-Func, 8-Bit, True Output, CMOS, CDFP20, CERAMIC, FP-20	Download
74ACT245FCXR	Fairchild	Bus Transceiver, ACT Series, 1-Func, 8-Bit, True Output, CMOS, CDFP20, CERAMIC, FP-20	Download
74ACT245LC	Texas Instruments	IC ACT SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, CQCC20, CERAMIC, LCC-20, Bus Driver/Transceiver	Download
74ACT245LC	Fairchild	Bus Transceiver, ACT Series, 1-Func, 8-Bit, True Output, CMOS, CQCC20, CERAMIC, LCC-20	Download
74ACT245LCQR	Fairchild	Bus Transceiver, ACT Series, 1-Func, 8-Bit, True Output, CMOS, CQCC20, CERAMIC, LCC-20	Download
74ACT245LCQR	Texas Instruments	ACT SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, CQCC20, CERAMIC, LCC-20	Download
74ACT245LCT	Fairchild	Bus Transceiver, ACT Series, 1-Func, 8-Bit, True Output, CMOS, CQCC20, CERAMIC, LCC-20	Download

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74act245g4 Related Product Datasheets：

Part Number	Datasheet
74ACT245FC 、 74ACT245FCQR 、 74ACT245LC 、 74ACT245LCQR 、 74ACT245PCQR 、 74ACT245QCQR 、 74ACT245QCX 、 74ACT245SCQR 、 74ACT245SJ 、 74ACT245SJQR	Download Datasheet
74ACT245DCQR 、 74ACT245LCQR 、 74ACT245LCT 、 74ACT245LCTR 、 74ACT245LCX 、 74ACT245LCXR 、 74ACT245PCQR 、 74ACT245SCQR 、 74ACT245SCT	Download Datasheet
74ACT245MSA 、 74ACT245MSAX 、 74ACT245MTC 、 74ACT245MTCX 、 74ACT245PC 、 74ACT245SC 、 74ACT245SC_NL 、 74ACT245SCX 、 74ACT245SJ	Download Datasheet
74ACT245D 、 74ACT245D-T 、 74ACT245DB 、 74ACT245DB-T 、 74ACT245PW 、 74ACT245PW-T 、 74ACT245PWDH 、 74ACT245PWDH-T	Download Datasheet
74ACT245DC 、 74ACT245FC 、 74ACT245FCQR 、 74ACT245FCT 、 74ACT245FCTR 、 74ACT245FCX 、 74ACT245FCXR 、 74ACT245LC	Download Datasheet
74ACT245MTC 、 74ACT245MTCX-NL 、 74ACT245PC 、 74ACT245SCX-NL 、 74ACT245SJ	Download Datasheet
74ACT245MSA 、 74ACT245MSAX 、 74ACT245PC 、 74ACT245SJ 、 74ACT245SJX	Download Datasheet
74ACT245MTC 、 74ACT245MTCX 、 74ACT245SC 、 74ACT245SCX	Download Datasheet
74ACT245DC 、 74ACT245DCQR 、 74ACT245MSA 、 74ACT245MSAX	Download Datasheet
74ACT245MSAJ 、 74ACT245PC 、 74ACT245QC 、 74ACT245SCX	Download Datasheet

74act245g4 Related Products：

Part Number	74ACT245FC	74ACT245FCQR	74ACT245LC	74ACT245LCQR	74ACT245PCQR	74ACT245QCQR	74ACT245QCX	74ACT245SCQR	74ACT245SJ	74ACT245SJQR
Description	ACT SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, CDFP20, CERAMIC, FP-20	ACT SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, CDFP20, CERAMIC, FP-20	IC ACT SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, CQCC20, CERAMIC, LCC-20, Bus Driver/Transceiver	ACT SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, CQCC20, CERAMIC, LCC-20	ACT SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDIP20, PLASTIC, DIP-20	ACT SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PQCC20, PLASTIC, LCC-20	ACT SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PQCC20, PLASTIC, LCC-20	ACT SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20, SOIC-20	ACT SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20, EIAJ, SOIC-20	ACT SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20, EIAJ, SOIC-20
Parts packaging code	DFP	DFP	QLCC	QLCC	DIP	QLCC	QLCC	SOIC	SOIC	SOIC
package instruction	DFP,	DFP,	QCCN,	QCCN,	DIP, DIP20,.3	QCCJ,	QCCJ,	SOP,	SOP, SOP20,.3	SOP,
Contacts	20	20	20	20	20	20	20	20	20	20
Reach Compliance Code	unknown	unknown	unknown	unknown	unknown	unknown	unknown	unknow	unknown	unknown
Other features	WITH DIRECTION CONTROL	WITH DIRECTION CONTROL	WITH DIRECTION CONTROL	WITH DIRECTION CONTROL	WITH DIRECTION CONTROL	WITH DIRECTION CONTROL	WITH COMMON OUTPUT ENABLE AND DIRECTION CONTROL	WITH DIRECTION CONTROL	WITH DIRECTION CONTROL	WITH DIRECTION CONTROL
series	ACT	ACT	ACT	ACT	ACT	ACT	ACT	ACT	ACT	ACT
JESD-30 code	R-GDFP-F20	R-GDFP-F20	S-CQCC-N20	S-CQCC-N20	R-PDIP-T20	S-PQCC-J20	S-PQCC-J20	R-PDSO-G20	R-PDSO-G20	R-PDSO-G20
Load capacitance (CL)	50 pF	50 pF	50 pF	50 pF	50 pF	50 pF	50 pF	50 pF	50 pF	50 pF
Logic integrated circuit type	BUS TRANSCEIVER	BUS TRANSCEIVER	BUS TRANSCEIVER	BUS TRANSCEIVER	BUS TRANSCEIVER	BUS TRANSCEIVER	BUS TRANSCEIVER	BUS TRANSCEIVER	BUS TRANSCEIVER	BUS TRANSCEIVER
Number of digits	8	8	8	8	8	8	8	8	8	8
Number of functions	1	1	1	1	1	1	1	1	1	1
Number of ports	2	2	2	2	2	2	2	2	2	2
Number of terminals	20	20	20	20	20	20	20	20	20	20
Maximum operating temperature	85 °C	85 °C	85 °C	85 °C	85 °C	85 °C	85 °C	85 °C	85 °C	85 °C
Minimum operating temperature	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C
Output characteristics	3-STATE	3-STATE	3-STATE	3-STATE	3-STATE	3-STATE	3-STATE	3-STATE	3-STATE	3-STATE
Output polarity	TRUE	TRUE	TRUE	TRUE	TRUE	TRUE	TRUE	TRUE	TRUE	TRUE
Package body material	CERAMIC, GLASS-SEALED	CERAMIC, GLASS-SEALED	CERAMIC, METAL-SEALED COFIRED	CERAMIC, METAL-SEALED COFIRED	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	DFP	DFP	QCCN	QCCN	DIP	QCCJ	QCCJ	SOP	SOP	SOP
Package shape	RECTANGULAR	RECTANGULAR	SQUARE	SQUARE	RECTANGULAR	SQUARE	SQUARE	RECTANGULAR	RECTANGULAR	RECTANGULAR
Package form	FLATPACK	FLATPACK	CHIP CARRIER	CHIP CARRIER	IN-LINE	CHIP CARRIER	CHIP CARRIER	SMALL OUTLINE	SMALL OUTLINE	SMALL OUTLINE
propagation delay (tpd)	9 ns	9 ns	9 ns	9 ns	9 ns	9 ns	9 ns	9 ns	9 ns	9 ns
Certification status	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified
Maximum seat height	2.286 mm	2.286 mm	1.905 mm	1.905 mm	5.08 mm	4.57 mm	4.57 mm	2.65 mm	2.108 mm	2.108 mm
Maximum supply voltage (Vsup)	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V
Minimum supply voltage (Vsup)	4.5 V	4.5 V	4.5 V	4.5 V	4.5 V	4.5 V	4.5 V	4.5 V	4.5 V	4.5 V
Nominal supply voltage (Vsup)	5 V	5 V	5 V	5 V	5 V	5 V	5 V	5 V	5 V	5 V
surface mount	YES	YES	YES	YES	NO	YES	YES	YES	YES	YES
technology	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS
Temperature level	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL
Terminal form	FLAT	FLAT	NO LEAD	NO LEAD	THROUGH-HOLE	J BEND	J BEND	GULL WING	GULL WING	GULL WING
Terminal pitch	1.27 mm	1.27 mm	1.27 mm	1.27 mm	2.54 mm	1.27 mm	1.27 mm	1.27 mm	1.27 mm	1.27 mm
Terminal location	DUAL	DUAL	QUAD	QUAD	DUAL	QUAD	QUAD	DUAL	DUAL	DUAL
width	6.731 mm	6.731 mm	8.89 mm	8.89 mm	7.62 mm	8.89 mm	8.89 mm	7.5 mm	5.3 mm	5.3 mm
Base Number Matches	1	1	1	1	1	1	1	1	1	1
Maker	Texas Instruments	Texas Instruments	-	-	Texas Instruments	-	Texas Instruments	-	Texas Instruments	Texas Instruments
length	-	-	8.89 mm	8.89 mm	24.892 mm	8.89 mm	8.89 mm	12.8 mm	12.6 mm	12.6 mm

IGBT working principle diagram

Electric heater temperature detection control circuit

Current transformer multi-function protection circuit b

Triangular wave signal generator circuit composed of LM359

Tone control circuit with buffer

timer exposure circuit

Oscillation circuit composed of LM324

Typical application circuit of differential photodiode

Aoda YB5-4C luxury ultra-thin double-duct range hood circuit diagram

Interconversion of flip-flops

Shortcut: S0 S1 S2 S3 S4 S5 S6 S7 S8 S9 SA SB SC SD SE SF SG SH SI SJ SK SL SM SN SO SP SQ SR SS ST SU SV SW SX SY SZ T0 T1 T2 T3 T4 T5 T6 T7 T8 T9 TA TB TC TD TE TF TG TH TI TJ TK TL TM TN TO TP TQ TR TS TT TU TV TW TX TY TZ U0 U1 U2 U3 U4 U6 U7 U8 UA UB UC UD UE UF UG UH UI UJ UK UL UM UN UP UQ UR US UT UU UV UW UX UZ V0 V1 V2 V3 V4 V5 V6 V7 V8 V9 VA VB VC VD VE VF VG VH VI VJ VK VL VM VN VO VP VQ VR VS VT VU VV VW VX VY VZ W0 W1 W2 W3 W4 W5 W6 W7 W8 W9 WA WB WC WD WE WF WG WH WI WJ WK WL WM WN WO WP WR WS WT WU WV WW WY X0 X1 X2 X3 X4 X5 X7 X8 X9 XA XB XC XD XE XF XG XH XK XL XM XN XO XP XQ XR XS XT XU XV XW XX XY XZ Y0 Y1 Y2 Y4 Y5 Y6 Y9 YA YB YC YD YE YF YG YH YK YL YM YN YP YQ YR YS YT YX Z0 Z1 Z2 Z3 Z4 Z5 Z6 Z8 ZA ZB ZC ZD ZE ZF ZG ZH ZJ ZL ZM ZN ZP ZR ZS ZT ZU ZV ZW ZX ZY

Newest Datasheets(2024-11-15): NLP25-7629J 2N6453 RNCJ2152BSBSL CHP0603K5622FBT 8261SY3A3GE22 E5J88-P44035 3-2176093-0 GUS-SS7BLF-03-6802-FD BPR300R200G C1210C331G1HACTU 1812J1K00331FAR B39380K6265K100 SMBJ26-E3/52 TRU050TDCNB16.128 RJMG1J37132019R 10121750-0222205LF C43AFT-3CS-13 2200HGH300122SB EN3P6FC GXO-U109G27.00000MHZ EKS9582-210GG9 RC0603FRF101K37 TAZB106K010LRL9045 TFCFV2VT245AC VJ0603A470JLBAP2L AE550L20-16P PT02C-22-36PY(424) RBP12DTT2742 Q250.0-32-3/100-3OT-TA 1221-360-15P-EB 715-084-13A-LC-D SL2-004-S184/06-99 BLU2512ER-8450-DB50Q HVCZ2010FTL17M4 CS1210GPX7RYBN103 GUS-QS0A-02-3921-F 135V-3282-AT50W 0603A2000122MRT BB11PA513N CRHP2510CB432MFKNW ATMEGA809-AFR C6D08065A BAF147B002-00A0 AT88SC0104CA-SU 2900379 SH8K25GZ0TB

Shortcut 0-9 : 00 01 02 03 04 05 06 07 08 09 0A 0C 0F 0J 0L 0M 0R 0S 0T 0Z 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 1H 1K 1M 1N 1P 1S 1T 1V 1X 1Z 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 2G 2K 2M 2N 2P 2Q 2R 2S 2T 2W 2Z 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F 3G 3H 3J 3K 3L 3M 3N 3P 3R 3S 3T 3V 40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4M 4N 4P 4S 4T 50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5E 5G 5H 5K 5M 5N 5P 5S 5T 5V 60 61 62 63 64 65 66 67 68 69 6A 6C 6E 6F 6M 6N 6P 6R 6S 6T 70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7M 7N 7P 7Q 7V 7W 7X 80 81 82 83 84 85 86 87 88 89 8A 8D 8E 8L 8N 8P 8S 8T 8W 8Y 8Z 90 91 92 93 94 95 96 97 98 99 9A 9B 9C 9D 9F 9G 9H 9L 9S 9T 9W

Shortcut A-D : A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 AA AB AC AD AE AF AG AH AI AJ AK AL AM AN AO AP AQ AR AS AT AU AV AW AX AY AZ B0 B1 B2 B3 B4 B5 B6 B7 B8 B9 BA BB BC BD BE BF BG BH BI BJ BK BL BM BN BO BP BQ BR BS BT BU BV BW BX BY BZ C0 C1 C2 C3 C4 C5 C6 C7 C8 C9 CA CB CC CD CE CF CG CH CI CJ CK CL CM CN CO CP CQ CR CS CT CU CV CW CX CY CZ D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 DA DB DC DD DE DF DG DH DI DJ DK DL DM DN DO DP DQ DR DS DT DU DV DW DX DZ

Shortcut E-K : E0 E1 E2 E3 E4 E5 E6 E7 E8 E9 EA EB EC ED EE EF EG EH EI EJ EK EL EM EN EO EP EQ ER ES ET EU EV EW EX EY EZ F0 F1 F2 F3 F4 F5 F6 F7 F8 F9 FA FB FC FD FE FF FG FH FI FJ FK FL FM FN FO FP FQ FR FS FT FU FV FW FX FY FZ G0 G1 G2 G3 G4 G5 G6 G7 G8 G9 GA GB GC GD GE GF GG GH GI GJ GK GL GM GN GO GP GQ GR GS GT GU GV GW GX GZ H0 H1 H2 H3 H4 H5 H6 H7 H8 HA HB HC HD HE HF HG HH HI HJ HK HL HM HN HO HP HQ HR HS HT HU HV HW HX HY HZ I1 I2 I3 I4 I5 I6 I7 IA IB IC ID IE IF IG IH II IK IL IM IN IO IP IQ IR IS IT IU IV IW IX J0 J1 J2 J6 J7 JA JB JC JD JE JF JG JH JJ JK JL JM JN JP JQ JR JS JT JV JW JX JZ K0 K1 K2 K3 K4 K5 K6 K7 K8 K9 KA KB KC KD KE KF KG KH KI KJ KK KL KM KN KO KP KQ KR KS KT KU KV KW KX KY KZ

Shortcut L-R : L0 L1 L2 L3 L4 L5 L6 L7 L8 L9 LA LB LC LD LE LF LG LH LI LJ LK LL LM LN LO LP LQ LR LS LT LU LV LW LX LY LZ M0 M1 M2 M3 M4 M5 M6 M7 M8 M9 MA MB MC MD ME MF MG MH MI MJ MK ML MM MN MO MP MQ MR MS MT MU MV MW MX MY MZ N0 N1 N2 N3 N4 N5 N6 N7 N8 NA NB NC ND NE NF NG NH NI NJ NK NL NM NN NO NP NQ NR NS NT NU NV NX NZ O0 O1 O2 O3 OA OB OC OD OE OF OG OH OI OJ OK OL OM ON OP OQ OR OS OT OV OX OY OZ P0 P1 P2 P3 P4 P5 P6 P7 P8 P9 PA PB PC PD PE PF PG PH PI PJ PK PL PM PN PO PP PQ PR PS PT PU PV PW PX PY PZ Q1 Q2 Q3 Q4 Q5 Q6 Q8 Q9 QA QB QC QE QF QG QH QK QL QM QP QR QS QT QV QW QX QY R0 R1 R2 R3 R4 R5 R6 R7 R8 R9 RA RB RC RD RE RF RG RH RI RJ RK RL RM RN RO RP RQ RR RS RT RU RV RW RX RY RZ

Shortcut S-Z : S0 S1 S2 S3 S4 S5 S6 S7 S8 S9 SA SB SC SD SE SF SG SH SI SJ SK SL SM SN SO SP SQ SR SS ST SU SV SW SX SY SZ T0 T1 T2 T3 T4 T5 T6 T7 T8 T9 TA TB TC TD TE TF TG TH TI TJ TK TL TM TN TO TP TQ TR TS TT TU TV TW TX TY TZ U0 U1 U2 U3 U4 U6 U7 U8 UA UB UC UD UE UF UG UH UI UJ UK UL UM UN UP UQ UR US UT UU UV UW UX UZ V0 V1 V2 V3 V4 V5 V6 V7 V8 V9 VA VB VC VD VE VF VG VH VI VJ VK VL VM VN VO VP VQ VR VS VT VU VV VW VX VY VZ W0 W1 W2 W3 W4 W5 W6 W7 W8 W9 WA WB WC WD WE WF WG WH WI WJ WK WL WM WN WO WP WR WS WT WU WV WW WY X0 X1 X2 X3 X4 X5 X7 X8 X9 XA XB XC XD XE XF XG XH XK XL XM XN XO XP XQ XR XS XT XU XV XW XX XY XZ Y0 Y1 Y2 Y4 Y5 Y6 Y9 YA YB YC YD YE YF YG YH YK YL YM YN YP YQ YR YS YT YX Z0 Z1 Z2 Z3 Z4 Z5 Z6 Z8 ZA ZB ZC ZD ZE ZF ZG ZH ZJ ZL ZM ZN ZP ZR ZS ZT ZU ZV ZW ZX ZY