GENERAL DESCRIPTION
The Am7968 TAXIchip Transmitter and Am7969 TAXIchip Receiver Chipset is a general-purpose interface for very high-speed (4–17.5 Mbyte/s, 40–175 Mbaud serially) point-to-point communications over coaxial or fiber-optic media.

DISTINCTIVE CHARACTERISTICS
■ Parallel TTL bus interface
— Eight Data and four Command Pins
— or nine Data and three Command Pins
— or ten Data and two Command Pins
■ Transparent synchronous serial link
— +5 V ECL Serial I/O
—AC or DC coupled
—NRZI 4B/5B, 5B/6B encoding/decoding
■ Drive coaxial cable or twisted pair directly
■ Easy interface with fiber optic data links
■ 32–140 Mbps (4–17.5 Mbyte/s) data throughput
■ Asynchronous input using STRB/ACK
■ Automatic MUX/DEMUX of Data and Command
■ Complete on-chip PLL, Crystal Oscillator
■ Single +5 V supply operation
■ 28-pin PLCC or DIP or LCC

GENERAL DESCRIPTION
The Am7968 TAXIchip Transmitter and Am7969 TAXIchip Receiver Chipset is a general-purpose interface for very high-speed (4–17.5 Mbyte/s, 40–175 Mbaud serially) point-to-point communications over coaxial or fiber-optic media.

DISTINCTIVE CHARACTERISTICS
■ Parallel TTL bus interface
— Eight Data and four Command Pins
— or nine Data and three Command Pins
— or ten Data and two Command Pins
■ Transparent synchronous serial link
— +5 V ECL Serial I/O
—AC or DC coupled
—NRZI 4B/5B, 5B/6B encoding/decoding
■ Drive coaxial cable or twisted pair directly
■ Easy interface with fiber optic data links
■ 32–140 Mbps (4–17.5 Mbyte/s) data throughput
■ Asynchronous input using STRB/ACK
■ Automatic MUX/DEMUX of Data and Command
■ Complete on-chip PLL, Crystal Oscillator
■ Single +5 V supply operation
■ 28-pin PLCC or DIP or LCC

GENERAL DESCRIPTION
The Am7968 TAXIchip Transmitter and Am7969 TAXIchip Receiver Chipset is a general-purpose interface for very high-speed (4–17.5 Mbyte/s, 40–175 Mbaud serially) point-to-point communications over coaxial or fiber-optic media. The TAXIchip set emulates a pseudo-parallel register. They load data into one side and output it on the other, except in this case, the “other” side is separated by a long serial link.
The speed of a TAXIchip system is adjustable over a range of frequencies, with parallel bus transfer rates of 4 Mbyte/s at the low end, and up to 17.5 Mbyte/s at the high end. The flexible bus interface scheme of the TAXIchip set accepts bytes that are either 8, 9, or 10 bits wide. Byte transfers can be Data or Command signaling.

DISTINCTIVE CHARACTERISTICS
■ Parallel TTL bus interface
   — Eight Data and four Command Pins
   — or nine Data and three Command Pins
   — or ten Data and two Command Pins
■ Transparent synchronous serial link
   — +5 V ECL Serial I/O
   — AC or DC coupled
   — NRZI 4B/5B, 5B/6B encoding/decoding
■ Drive coaxial cable or twisted pair directly
■ Easy interface with fiber optic data links
■ 32–140 Mbps (4–17.5 Mbyte/s) data throughput
■ Asynchronous input using STRB/ACK
■ Automatic MUX/DEMUX of Data and Command
■ Complete on-chip PLL, Crystal Oscillator
■ Single +5 V supply operation
■ 28-pin PLCC or DIP or LCC

GENERAL DESCRIPTION
The Am7968 TAXIchip Transmitter and Am7969 TAXIchip Receiver Chipset is a general-purpose interface for very high-speed (4–17.5 Mbyte/s, 40–175 Mbaud serially) point-to-point communications over coaxial or fiber-optic media. The TAXIchip set emulates a pseudo-parallel register. They load data into one side and output it on the other, except in this case, the “other” side is separated by a long serial link.
The speed of a TAXIchip system is adjustable over a range of frequencies, with parallel bus transfer rates of 4 Mbyte/s at the low end, and up to 17.5 Mbyte/s at the high end. The flexible bus interface scheme of the TAXIchip set accepts bytes that are either 8, 9, or 10 bits wide. Byte transfers can be Data or Command signaling.

DISTINCTIVE CHARACTERISTICS
■ Parallel TTL bus interface
   — Eight Data and four Command Pins
   — or nine Data and three Command Pins
   — or ten Data and two Command Pins
■ Transparent synchronous serial link
   — +5 V ECL Serial I/O
   — AC or DC coupled
   — NRZI 4B/5B, 5B/6B encoding/decoding
■ Drive coaxial cable or twisted pair directly
■ Easy interface with fiber optic data links
■ 32–140 Mbps (4–17.5 Mbyte/s) data throughput
■ Asynchronous input using STRB/ACK
■ Automatic MUX/DEMUX of Data and Command
■ Complete on-chip PLL, Crystal Oscillator
■ Single +5 V supply operation
■ 28-pin PLCC or DIP or LCC

[Champion Technologies, Inc.]

3.3V 5x7mm Surface Mount Crystal Clock Oscillators

♦ CMOS Compatible
♦ Tri-State Feature for Auto Test Systems
♦ Tape & Reel Packaging
♦ ±20ppm Available - Please Contact Factory

[Champion Technologies, Inc.]

3.3V 5x7mm Surface Mount Crystal Clock Oscillators

♦ CMOS Compatible
♦ Tri-State Feature for Auto Test Systems
♦ Tape & Reel Packaging
♦ ±20ppm Available - Please Contact Factory

THIS PRODUCT IS NOT RECOMMENDED FOR NEW DESIGNS.
PLEASE REFER TO THE M2 PRODUCT SERIES.

♦ CMOS Compatible
♦ Tri-State Feature for Auto Test Systems
♦ Tape & Reel Packaging
♦ ±20ppm Available - Please Contact Factory

THIS PRODUCT IS NOT RECOMMENDED FOR NEW DESIGNS.
PLEASE REFER TO THE M2 PRODUCT SERIES.

♦ CMOS Compatible
♦ Tri-State Feature for Auto Test Systems
♦ Tape & Reel Packaging
♦ ±20ppm Available - Please Contact Factory

BATTERY PROTECTION IC FOR 1-CELL PACK

The S-8241 Series is a series of lithiumion/lithium polymer rechargeable battery protection ICs incorporating high-accuracy voltage detection circuits and delay circuits.
These ICs are suitable for protection of 1-cell lithium ion/lithium polymer battery packs from overcharge, overdischarge and overcurrent.

„Features
(1)  Internal high-accuracy voltage detection circuit
•Overcharge detection voltage:  3.9 to 4.4 V (5 mV-step)
   Accuracy of ±25 mV(+25 °C) and ± 30 mV(−5 to +55 °C)
•Overcharge release voltage:  3.8 to 4.4 V*1  Accuracy of ±50 mV
•Overdischarge detection voltage:  2.0 to 3.0 V (100 mV-step)  Accuracy of ±80 mV
•Overdischarge release voltage:  2.0 to 3.4 V*2  Accuracy of ±100 mV
•Overcurrent 1 detection voltage:  0.05 to 0.3 V (5 mV-step)  Accuracy of ±20 mV
•Overcurrent 2 detection voltage:  0.5 V (fixed)  Accuracy of ±100 mV
(2)  A high voltage withstand device isused for charger connection pins 
     (VM and CO pins: Absolute maximum rating = 26 V)
(3)  Delay times (overcharge: tCU; overdischarge: tDL; overcurrent 1: tlOV1 ; overcurrent 2: tlOV2) are generated by an internal circuit. (External capacitors are unnecessary.)  Accuracy of ±30%
(4)  Internal three-step overcurrent detection circuit (overcurrent 1, overcurrent 2, and load short-circuiting)
(5)  Either the 0 V battery charging function or 0 V battery charge inhibiting function can be selected.
(6)  Products with and without a power-down function can be selected.
(7)  Charger detection function and abnormal charge current detection function
•The overdischarge hysterisis is released by detecting a negative VM pin voltage (typ. −1.3 V) (Charger detection function).
•If the output voltage at DO pin is high and the VM pin voltage becomes equalto or lower than the charger detection voltage (typ. −1.3 V), the output voltage at CO pin goes low (Abnormal charge current detection function).
(8)  Low current consumption
    •Operation:  3.0 μA typ.  5.0 μA max.
    •Power-down mode:  0.1 μA max.
(9)  Wide operating temperature range: −40 to +85 °C
(10)  Small package  SOT-23-5, SNT-6A
(11) Lead-free products
*1.Overcharge release voltage = Overcharge detection voltage - Overcharge hysteresis
The overcharge hysteresis can be selected in the range 0.0, or 0.1 to 0.4 V in 50 mV steps. (However, selection
“Overcharge release voltage<3.8 V” is enabled.)
*2.Overdischarge release voltage = Overdischarge detection voltage + Overdischarge hysteresis
The overdischarge hysteresis can be selected in the range 0.0 to 0.7 V in100 mV steps. (However, selection
“Overdischarge release voltage>3.4 V” is enabled.)

„Applications
•Lithium-ion rechargeable battery packs
•Lithium- polymer rechargeable battery packs

BATTERY PROTECTION IC FOR 1-CELL PACK

The S-8241 Series is a series of lithiumion/lithium polymer rechargeable battery protection ICs incorporating high-accuracy voltage detection circuits and delay circuits.
These ICs are suitable for protection of 1-cell lithium ion/lithium polymer battery packs from overcharge, overdischarge and overcurrent.

„Features
(1)  Internal high-accuracy voltage detection circuit
•Overcharge detection voltage:  3.9 to 4.4 V (5 mV-step)
   Accuracy of ±25 mV(+25 °C) and ± 30 mV(−5 to +55 °C)
•Overcharge release voltage:  3.8 to 4.4 V*1  Accuracy of ±50 mV
•Overdischarge detection voltage:  2.0 to 3.0 V (100 mV-step)  Accuracy of ±80 mV
•Overdischarge release voltage:  2.0 to 3.4 V*2  Accuracy of ±100 mV
•Overcurrent 1 detection voltage:  0.05 to 0.3 V (5 mV-step)  Accuracy of ±20 mV
•Overcurrent 2 detection voltage:  0.5 V (fixed)  Accuracy of ±100 mV
(2)  A high voltage withstand device isused for charger connection pins 
     (VM and CO pins: Absolute maximum rating = 26 V)
(3)  Delay times (overcharge: tCU; overdischarge: tDL; overcurrent 1: tlOV1 ; overcurrent 2: tlOV2) are generated by an internal circuit. (External capacitors are unnecessary.)  Accuracy of ±30%
(4)  Internal three-step overcurrent detection circuit (overcurrent 1, overcurrent 2, and load short-circuiting)
(5)  Either the 0 V battery charging function or 0 V battery charge inhibiting function can be selected.
(6)  Products with and without a power-down function can be selected.
(7)  Charger detection function and abnormal charge current detection function
•The overdischarge hysterisis is released by detecting a negative VM pin voltage (typ. −1.3 V) (Charger detection function).
•If the output voltage at DO pin is high and the VM pin voltage becomes equalto or lower than the charger detection voltage (typ. −1.3 V), the output voltage at CO pin goes low (Abnormal charge current detection function).
(8)  Low current consumption
    •Operation:  3.0 μA typ.  5.0 μA max.
    •Power-down mode:  0.1 μA max.
(9)  Wide operating temperature range: −40 to +85 °C
(10)  Small package  SOT-23-5, SNT-6A
(11) Lead-free products
*1.Overcharge release voltage = Overcharge detection voltage - Overcharge hysteresis
The overcharge hysteresis can be selected in the range 0.0, or 0.1 to 0.4 V in 50 mV steps. (However, selection
“Overcharge release voltage<3.8 V” is enabled.)
*2.Overdischarge release voltage = Overdischarge detection voltage + Overdischarge hysteresis
The overdischarge hysteresis can be selected in the range 0.0 to 0.7 V in100 mV steps. (However, selection
“Overdischarge release voltage>3.4 V” is enabled.)

„Applications
•Lithium-ion rechargeable battery packs
•Lithium- polymer rechargeable battery packs